CN210290637U - Novel commercial inter-wheel differential assembly - Google Patents
Novel commercial inter-wheel differential assembly Download PDFInfo
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- CN210290637U CN210290637U CN201920546240.XU CN201920546240U CN210290637U CN 210290637 U CN210290637 U CN 210290637U CN 201920546240 U CN201920546240 U CN 201920546240U CN 210290637 U CN210290637 U CN 210290637U
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Abstract
The utility model discloses a novel commercial wheel differential mechanism assembly within a definite time, belong to the automobile manufacturing technology field, the utility model discloses a driven conical gear and differential mechanism left side shell integrated structure, prevent that the cross axle assembly is integrated to the structure on the differential mechanism right side shell, and have good lubricating system, not only eliminated driven conical gear coupling bolt fracture, the tooth is beaten to the principal and subordinate moving conical gear, the emergence of phenomena such as differential mechanism shell planetary gear sphere wearing and tearing are serious, and still reduced the connection part, convenient processing, assembly process, the production beat has been improved, the transmission efficiency and the reliability of product have been increased, weight reduction in original structure is compared 7.9%, the cost reduces about 6%, and to the wheel differential mechanism assembly of different velocity ratios, differential mechanism right side shell all can be general interchange, so not only be favorable to the production tissue, but also promoted interchangeability of product, The organization efficiency of market spare parts is improved, thereby achieving the purposes of light weight, economy and lean production.
Description
Technical Field
The utility model belongs to the technical field of the automobile manufacturing, concretely relates to novel commercial wheel differential mechanism assembly within a definite time.
Background
The inter-wheel differential assembly is provided for adjusting the difference in the rotational speed of the left and right drive wheels. When the automobile runs on a turning or uneven road surface, in order to ensure that the left and right driving wheels can roll at different rotating speeds, the left and right driving wheels need to be differentially driven by the inter-wheel differential assembly, so that the driving wheels on two sides can be ensured to do pure rolling motion. The provided wheel differential assembly with stable quality, excellent lubrication, high transmission efficiency, few parts, light weight, good assembly process performance and low price certainly brings advantages to enterprises in intense market competition.
The structure of the inter-wheel differential assembly commonly used in the market is shown in fig. 10 and 11: 1. the driven bevel gear is connected with a left shell of the differential mechanism through a bolt; 2. the cross-shaped shaft holes are respectively arranged on the left differential case and the right differential case in half, namely, the left differential case and the right differential case are connected through bolts, and then the cross-shaped shaft holes are machined; 3. the planet gear spacer does not prevent rotation. The disadvantages of adopting the above structure are: 1. when the automobile runs under load and the automobile runs repeatedly in a forward and reverse mode, the driven bevel gear connecting bolt is easy to generate fatigue fracture; 2. the cross shaft hole of the structure is processed by the left and right differential case shells, so that the process is complex, the processing procedures are multiple, and the production rhythm is influenced when the yield is high; 3. when the automobile runs on many curves in road conditions, the rotating speeds of the left driving wheel and the right driving wheel are different, the inter-wheel differential operates constantly, and the spherical surface of the planetary gear of the differential shell is seriously abraded due to the fact that the planetary gear gasket is not prevented from rotating.
The driven bevel gear is connected with the differential sub-assembly by using the bolts, so that the phenomena of breakage of the feedback connecting bolts, gear striking of the driving bevel gear and the driven bevel gear, serious abrasion of the planetary gear spherical surface of the differential shell and the like occur in the market for a long time, and the structure has the defects of difficulty in ensuring the assembly precision, influence on the transmission efficiency, complex processing and assembling process and large overall quality.
SUMMERY OF THE UTILITY MODEL
The utility model aims at the not enough of above-mentioned prior art, a novel commercial wheel differential mechanism assembly and assembly method are provided, improve on current wheel differential mechanism assembly, under the prerequisite that does not influence interchangeability with reduction gear assembly, adopt driven conical gear and the integration of differential mechanism left shell, prevent changeing the planetary gear gasket, prevent changeing the structure that the cross axle assembly is integrated to the differential mechanism right side shell, and have good lubricating system, thereby provide a stable in quality, it is lubricated good, high transmission efficiency, the part is few, light in weight, the assembly technology is good, the low price's wheel differential mechanism assembly.
The utility model discloses a following technical scheme realizes:
a novel commercial inter-wheel differential assembly comprises an integrated driven bevel gear 1, a differential right shell assembly 2 and a differential bearing 5; the differential right shell assembly 2 comprises a half axle gear 3, a half axle gear gasket 4, a differential right shell 7, an anti-rotation planetary gear gasket 8, a planetary gear 9, an anti-rotation cross axle assembly 10 and an elastic cylindrical pin 11;
a differential bearing 5 is arranged at the left end of the integrated driven bevel gear 1 along the outer side of the diameter direction; the differential right shell assembly 2 is arranged on the right side of the integrated driven bevel gear 1; the right end of the differential right shell assembly 2 is provided with a differential bearing 5 along the outer side of the diameter direction, the middle of the differential right shell assembly 2 is provided with a half axle gear gasket 4 along the inner side of the diameter direction, the left side of the half axle gear gasket 4 is provided with a half axle gear 3, the left end of the half axle gear 3 and the left side of the differential right shell assembly 2 are provided with an anti-rotation cross axle assembly 10, four anti-rotation planetary gear gaskets 8 are arranged on four shaft rods of the anti-rotation cross axle assembly 10 and inside the left side of the differential right shell assembly 2, and the inner side of the anti-rotation planetary gear gaskets 8 is provided with a planetary gear 9.
Further, the integrated driven bevel gear 1 is formed by integrally forging a driven bevel gear 1-1 and a differential left shell 1-2; a differential right shell matching hole 1-8 is formed in the end face of the driven bevel gear 1-1 along the diameter direction inner side, and the differential right shell matching hole 1-8 is used for being matched with an integrated driven bevel gear matching face 7-8 formed in a differential right shell 7; a half axle gear gasket matching surface 1-7 is arranged on the inner side of the middle part of the left shell 1-2 of the differential mechanism and used for mounting a half axle gear gasket 4; a differential bearing matching surface 1-3 is arranged on the outer side of the left end of the differential left shell 1-2 along the diameter direction and is used for matching with an inner ring roller bearing of a differential bearing 5; a plurality of connecting bolt holes 1-10 are uniformly distributed on the large flange face in the middle of the differential left shell 1-2 and are used for being matched and connected with connecting threaded holes 7-9 arranged on the differential right shell 7 through connecting bolts 6, so that the integrated driven bevel gear 1 and the differential right shell 7 are connected and fixed into a rigid whole; an inter-wheel differential lock end surface spline 1-9 is arranged on the left end surface of the differential left shell 1-2, and the inter-wheel differential lock end surface spline 1-9 is used for being matched with an inter-wheel differential lock moving gear sleeve, so that differential of a left driving wheel and a right driving wheel is prevented, the driving force of a driving axle is improved, and the passing capacity of the whole vehicle is improved; a circle of first lightening holes 1-6 are uniformly distributed on an outer shell of a left differential case 1-2 between the connecting bolt holes 1-10 and a bearing matching surface 1-3 of the differential, and first lightening grooves 1-4 and second lightening grooves 1-5 are alternately arranged between the first lightening holes 1-6.
Further, the length of the first weight-reducing grooves 1-4 is smaller than that of the second weight-reducing grooves 1-5, and the length of the first weight-reducing grooves is used for ensuring the strength of the integrated driven bevel gear 1.
Furthermore, an integrated driven bevel gear matching surface 7-8 is arranged at the outer side of the diameter direction of the left end of the differential right shell 7, and the integrated driven bevel gear matching surface 7-8 is used for being matched and connected with a differential right shell matching hole 1-8 arranged on the integrated driven bevel gear 1; a differential bearing mounting surface 7-5 is arranged on the outer side of the right end of the differential right shell 7 along the diameter direction and is used for being matched with an inner ring roller bearing of the differential bearing 5; a half axle gear gasket matching surface 7-4 is arranged on the right side of the inner side of the diameter direction in the middle of the right differential case 7 and used for mounting a half axle gear gasket 4; four elastic cylindrical pin mounting holes 7-2 are uniformly distributed on the integrated driven bevel gear matching surface 7-8 and used for mounting elastic cylindrical pins 11; a plurality of connecting threaded holes 7-9 are uniformly distributed on the matching surface 7-8 of the integrated driven bevel gear, and the connecting threaded holes 7-9 are used for fixedly connecting the integrated driven bevel gear 1 and the right differential case 7 into a rigid whole through connecting bolts 6; four anti-rotation cross shaft mounting holes 7-1 which are uniformly distributed are formed in the shell between the integrated driven bevel gear matching surface 7-8 and the half axle gear gasket matching surface 7-4, and the anti-rotation cross shaft mounting holes 7-1 are used for mounting an anti-rotation cross shaft assembly 10; the inner sides of the four anti-rotation cross shaft mounting holes 7-1 which are uniformly distributed along the axis direction are provided with anti-rotation planetary gear gasket spherical surface matching surfaces 7-3; a plurality of second lightening holes 7-6 are uniformly distributed on the shell between the matching surface 7-8 of the integrated driven bevel gear and the matching surface 7-4 of the half axle gear gasket along the circumferential direction, so that gear lubricating oil can smoothly enter the interior of the inter-wheel differential assembly to enhance lubrication; and reinforcing ribs 7-7 are arranged between the second lightening holes 7-6 along the circumferential direction and are used for enhancing the rigidity of the right differential case 7.
Furthermore, a plurality of oil storage pits 8-1 are uniformly distributed on the anti-rotation planetary gear gasket 8 along the circumferential direction and used for storing a plurality of lubricating oil in the pit grooves, and when the planetary gear 9 and the anti-rotation planetary gear gasket 8 do the existing opposite movement, an oil film can be formed, so that the abrasion between the anti-rotation planetary gear gasket 8 and the planetary gear 9 is reduced, and the service life of parts is prolonged; an anti-rotation cross shaft mounting hole 8-3 is formed in the center of the anti-rotation planetary gear gasket 8, anti-rotation flat plates 8-2 are arranged on two side edges of the anti-rotation cross shaft mounting hole 8-3 along the outer side of the diameter direction, and the anti-rotation flat plates 8-2 are matched with the anti-rotation flat plates 10-1-1 of the long planetary gear shaft and the anti-rotation flat plates 10-2-1 of the short planetary gear shaft; the rotation prevention flat 8-2 arranged on the rotation prevention planetary gear gasket 8 is matched with the rotation prevention flat 10-1-1 of the long planetary gear shaft arranged on the long planetary gear shaft 10-1 and the rotation prevention flat 10-2-1 of the short planetary gear shaft arranged on the short planetary gear shaft 10-2, so that the planetary gear gasket 8 is limited to rotate along the circumferential direction of the rotation prevention cross shaft assembly 10 in the operation process of the differential assembly, the rotation prevention effect is achieved, and the problem that the spherical matching surface 7-3 of the rotation prevention planetary gear gasket arranged on the right differential shell 7 is seriously abraded is solved.
Furthermore, the anti-rotation cross shaft assembly 10 consists of a long planet gear shaft 10-1 and two short planet gear shafts 10-2, the upper and lower planes of the left and right sides of the long planet gear shaft 10-1 are provided with the anti-rotation flat 10-1-1 of the long planet gear shaft, and the middle part of the long planet gear shaft 10-1 is provided with two short planet gear shaft mounting key grooves 10-1-2; the upper and lower planes of the right side of the short planetary gear shaft 10-2 are provided with a short planetary gear shaft anti-rotation flat 10-2-1, and the left end part of the short planetary gear shaft 10-2 is provided with a short planetary gear shaft mounting key 10-2-2; the short planet gear shaft mounting key groove 10-1-2 is matched with the short planet gear shaft mounting key 10-2-2 to form an anti-rotation cross shaft assembly 10.
A novel method for assembling a commercial inter-wheel differential assembly comprises the following steps:
A. the differential bearing 5 is respectively pressed on a differential bearing matching surface 1-3 and a differential bearing mounting surface 7-5 which are arranged on the integrated driven bevel gear 1 and the differential right shell 7 by using a special tool in advance, and the pressing in place is ensured;
B. placing the bottom of a right differential case 7 with a differential bearing pressed downwards on a flat plate, wherein the bottom is one side with a differential bearing mounting surface 7-5;
C. placing the half axle gear gasket 4 in the right differential case 7, enabling the half axle gear gasket 4 to be matched with a half axle gear gasket matching surface 7-4 arranged in the right differential case 7, and then placing the half axle gear 3 on the half axle gear gasket 4;
D. half of the long planet gear shaft 10-1 is arranged in an anti-rotation cross shaft mounting hole 7-1 arranged on the right 7 of the differential mechanism; the anti-rotation planetary gear gasket 8 is arranged in the long planetary gear shaft 10-1 and is arranged in the planetary gear 9; a planetary gear 9 and an anti-rotation planetary gear gasket 8 are also sequentially arranged on the corresponding side of the bearing; completely assembling the long planet gear shaft 10-1 in place, and ensuring that a short planet gear shaft mounting key groove 10-1-2 arranged on the long planet gear shaft is parallel to the central line of the differential right shell 7;
E. half of the short planet gear shaft 10-2 is arranged in an anti-rotation cross shaft mounting hole 7-1 arranged on a right differential case 7; the anti-rotation planetary gear gasket 8 is arranged in the short planetary gear shaft 10-2 and is arranged in the planetary gear 9; completely pushing the short planet gear shaft 10-2 to the right position, and completely matching a short planet gear shaft mounting key 10-2-2 arranged on the short planet gear shaft 10-2 with a short planet gear shaft mounting key groove 10-1-2 arranged on the long planet gear shaft 10-1; assembling the short planet gear shaft 10-2, the anti-rotation planet gear gasket 8 and the planet gear 9 on the corresponding side in place by using the same assembling method;
F. the elastic cylindrical pin 11 is installed in an elastic cylindrical pin installation hole 7-2 formed in the right differential shell 7 by using a special tool, and the assembly in place is guaranteed;
the assembly of the differential right shell assembly 2 is completed;
G. sequentially placing a half axle gear 3, a half axle gear gasket 4 and an integrated driven bevel gear 1 on an assembled differential right shell assembly 2, and ensuring that connecting bolt holes 1-10 arranged on the integrated driven bevel gear 1 are aligned with connecting threaded holes 7-9 arranged on a differential right shell 7;
H. installing the connecting bolt 6 and tightening the connecting bolt 6 with a specified torque;
through the above operational steps, a novel commercial inter-wheel differential assembly as described herein is assembled.
Compared with the prior art, the utility model has the advantages as follows:
1. an integrally forged integrated driven bevel gear structure is adopted to replace the original bolt connection structure of the driven bevel gear and the differential left shell; 2. the original structure that the left and right differential cases and the universal joint pin assembly are connected through bolts is replaced by a structure that the anti-rotation universal joint pin assembly with the planetary gear and the anti-rotation planetary gear gasket is integrated on the right differential case; 3. the original non-anti-rotation planetary gear gasket is replaced by the planetary gear gasket with the anti-rotation structure;
the utility model discloses improve on current inter-wheel differential mechanism assembly, under the prerequisite that does not influence interchangeability with reduction gear assembly, adopt driven bevel gear and differential mechanism left side shell integral structure, prevent changeing planetary gear gasket, prevent changeing the structure that the cross axle assembly is integrated to the differential mechanism right side shell, and have good lubricating system, under the prerequisite of guaranteeing that differential mechanism assembly internals normally works, not only eliminated the driven bevel gear connecting bolt that feeds back on the market fracture, the emergence of phenomena such as the tooth is beaten to the driving and driven bevel gear, differential mechanism shell planetary gear spherical surface is serious wearing and tearing, but also reduced the connection part, made things convenient for processing, assembly process, improved the production beat, increased the transmission efficiency and the reliability of product, the most important thing is that the inter-wheel differential mechanism assembly of new construction compares in the weight of original structure and lightens 7.9%, the cost reduces about 6%, and for the inter-wheel differential assembly with different speed ratios, the right differential shell can be universally exchanged, so that the production organization is facilitated, the interchangeability of products and the organization efficiency of market spare parts are improved, and the aims of light weight, economy and lean production are fulfilled.
Drawings
Fig. 1 is an exploded view of a novel commercial inter-wheel differential assembly according to the present invention;
fig. 2a is a top view of the integrated driven bevel gear of the present invention;
fig. 2b is a cross-sectional view of the integrated driven bevel gear of the present invention;
fig. 2c is a bottom view of the integrated driven bevel gear according to the present invention;
fig. 3a is a schematic structural view of a right differential case assembly according to the present invention;
FIG. 3b is a top view of a right differential housing assembly according to the present invention;
FIG. 4a is a top view of a right differential case according to the present invention;
FIG. 4b is a cross-sectional view of the right differential case of the present invention;
FIG. 5a is a top view of an anti-rotation planetary gear spacer according to the present invention;
FIG. 5b is a side view of the anti-rotation planetary gear spacer of the present invention;
FIG. 6 is a schematic structural view of an anti-rotation cross axle assembly according to the present invention;
fig. 7 is a schematic structural view of a long planetary gear shaft according to the present invention;
fig. 8 is a schematic structural view of the short planetary gear shaft of the present invention;
FIG. 9 is an assembly view of a novel commercial inter-wheel differential assembly in accordance with the present invention;
FIG. 10 is an exploded view of a prior art inter-wheel differential assembly;
FIG. 11 is an assembly view of a prior art inter-wheel differential assembly;
in the figure: 1. an integral driven bevel gear; 2. a differential right housing assembly; 3. a half shaft gear; 4. a half-shaft gear spacer; 5. a differential bearing; 6. a connecting bolt; 7. a differential right housing; 8. an anti-rotation planetary gear spacer; 9. a planetary gear; 10-1. long planet gear shaft; 10-2. short planet gear shafts; 11. an elastic cylindrical pin;
1-1, driven bevel gear; 1-2, a differential left shell; 1-3, a differential bearing mating surface; 1-4, 1-5 weight reduction grooves; 1-6, a first lightening hole; 1-7, half axle gear gasket matching surface; 1-8, matching holes of a right differential shell; 1-9, spline at the end face of the differential lock between wheels; 1-10, connecting bolt holes;
7-1, an anti-rotation cross shaft mounting hole; 7-2. an elastic cylindrical pin mounting hole; 7-3, a spherical surface matching surface of the anti-rotation planetary gear gasket; 7-4, matching surfaces of half axle gear gaskets; 7-5, mounting surface of differential bearing; 7-6. a second lightening hole; 7-7, reinforcing ribs; 7-8, matching surface of the integrated driven bevel gear; 7-9, connecting the threaded hole;
8-1, oil storage pit; 8-2, preventing rotation and flattening; 10-1. long planet gear shaft; 10-2. short planet gear shafts; 10-1-1. the long planetary gear shaft is prevented from rotating and flattening; 10-1-2. installing a key groove on the short planet gear shaft; 10-2-1, the short planet gear shaft is prevented from rotating and flattening; 10-2-2. short planetary gear shaft mounting keys;
21-1, driven bevel gear; 21-2. a differential left shell; 23. a half shaft gear; 24. a half-shaft gear spacer; 25. a differential bearing; 26. the left differential shell and the right differential shell are connected with bolts; 27. a differential right housing; 29. a planetary gear; 212. a planetary gear spacer; 213. a cross shaft; 214. a driven bevel gear connecting bolt;
Detailed Description
The novel commercial inter-wheel differential assembly of the present invention will be further described with reference to the accompanying drawings.
As shown in the accompanying drawings 1, 3a and 3b and the accompanying description 9, the novel commercial inter-wheel differential assembly of the present invention comprises an integrated driven bevel gear 1, a right differential case assembly 2 and a differential bearing 5; the differential right shell assembly 2 comprises a half axle gear 3, a half axle gear gasket 4, a differential right shell 7, an anti-rotation planetary gear gasket 8, a planetary gear 9, an anti-rotation cross axle assembly 10 and an elastic cylindrical pin 11; a differential bearing 5 is arranged at the left end of the integrated driven bevel gear 1 along the outer side of the diameter direction; the differential right shell assembly 2 is arranged on the right side of the integrated driven bevel gear 1; a differential bearing 5 is also arranged at the right end of the right differential case assembly 2 along the outer side of the diameter direction, a half axle gear gasket 4 is arranged at the middle part of the right differential case assembly 2 along the inner side of the diameter direction, a half axle gear 3 is arranged at the left side of the half axle gear gasket 4, an anti-rotation cross axle assembly 10 is arranged at the left end of the half axle gear 3 and the left side of the right differential case assembly 2, four anti-rotation planetary gear gaskets 8 are arranged on four shaft levers of the anti-rotation cross axle assembly 10 and inside the left side of the right differential case assembly 2, and a planetary gear 9 is arranged at the inner side of the anti-rotation planetary gear gaskets 8; connecting bolt 6 sets up on the big flange face in middle part of driven conical gear 1 of integral type, through connecting bolt 6, becomes a novel commercial differential mechanism assembly between wheel with the combination connection of driven conical gear 1 of integral type and differential mechanism right side shell assembly 2 this paper.
As shown in the accompanying explanatory fig. 2a, 2b and 2c, the integrated driven bevel gear 1 is integrally forged from a driven bevel gear 1-1 and a differential left case 1-2; a differential right shell matching hole 1-8 is formed in the end face of the driven bevel gear 1-1 along the diameter direction, and the differential right shell matching hole 1-8 is used for being matched with an integrated driven bevel gear matching face 7-8 formed in a differential right shell 7; a half axle gear gasket matching surface 1-7 is arranged on the inner side of the middle part of the left shell 1-2 of the differential mechanism and used for mounting a half axle gear gasket 4; a differential bearing matching surface 1-3 is arranged on the outer side of the left end of the differential left shell 1-2 along the diameter direction and is used for matching with an inner ring roller bearing of a differential bearing 5; a plurality of connecting bolt holes 1-10 are uniformly distributed on the large flange face in the middle of the differential left shell 1-2 and are used for being matched and connected with connecting threaded holes 7-9 arranged on the differential right shell 7 through connecting bolts 6, so that the integrated driven bevel gear 1 and the differential right shell 7 are connected and fixed into a rigid whole; an inter-wheel differential lock end surface spline 1-9 is arranged on the left end surface of the differential left shell 1-2, and the inter-wheel differential lock end surface spline 1-9 is used for being matched with an inter-wheel differential lock moving gear sleeve, so that differential of a left driving wheel and a right driving wheel is prevented, the driving force of a driving axle is improved, and the passing capacity of the whole vehicle is improved; a circle of lightening holes 1-6 are uniformly distributed on an outer shell of a left differential case 1-2 between the connecting bolt holes 1-10 and a bearing matching surface 1-3 of the differential, and first lightening grooves 1-4 and second lightening grooves 1-5 are alternately arranged between the lightening holes 1-6;
further, the length of the first weight-reducing grooves 1-4 is smaller than that of the second weight-reducing grooves 1-5, and the length of the first weight-reducing grooves is used for ensuring the strength of the integrated driven bevel gear 1.
As shown in the description attached fig. 4a and the description attached fig. 4b, an integrated driven bevel gear mating surface 7-8 is arranged at the left end of the differential right housing 7 along the diameter direction outer side, and the integrated driven bevel gear mating surface 7-8 is used for being matched and connected with a differential right housing mating hole 1-8 arranged on the integrated driven bevel gear 1; a differential bearing mounting surface 7-5 is arranged on the outer side of the right end of the differential right shell 7 along the diameter direction and is used for being matched with an inner ring roller bearing of the differential bearing 5; a half axle gear gasket matching surface 7-4 is arranged on the right side of the inner side of the diameter direction in the middle of the right differential case 7 and used for mounting a half axle gear gasket 4; four elastic cylindrical pin mounting holes 7-2 are uniformly distributed on the integrated driven bevel gear matching surface 7-8 and used for mounting elastic cylindrical pins 11; a plurality of connecting threaded holes 7-9 are uniformly distributed on the matching surface 7-8 of the integrated driven bevel gear, and the connecting threaded holes 7-9 are used for fixedly connecting the integrated driven bevel gear 1 and the right differential case 7 into a rigid whole through the connecting bolts 6; four anti-rotation cross shaft mounting holes 7-1 which are uniformly distributed are formed in the shell between the integrated driven bevel gear matching surface 7-8 and the half axle gear gasket matching surface 7-4, and the anti-rotation cross shaft mounting holes 7-1 are used for mounting an anti-rotation cross shaft assembly 10; the inner sides of the four anti-rotation cross shaft mounting holes 7-1 which are uniformly distributed along the axis direction are provided with anti-rotation planetary gear gasket spherical surface matching surfaces 7-3; a plurality of lightening holes 7-6 are uniformly distributed on the shell between the matching surface 7-8 of the integrated driven bevel gear and the matching surface 7-4 of the half axle gear gasket along the circumferential direction, so that gear lubricating oil can smoothly enter the interior of the inter-wheel differential assembly to strengthen the lubrication; and reinforcing ribs 7-7 are arranged between the lightening holes 7-6 along the circumferential direction and are used for enhancing the rigidity of the right differential case 7.
As shown in the accompanying drawings 5a and 5b, a plurality of oil storage pits 8-1 are uniformly distributed on the anti-rotation planetary gear gasket 8 along the circumferential direction, the oil storage pits 8-1 are used for storing a plurality of lubricating oil in the pit grooves, and when the planetary gear 9 and the anti-rotation planetary gear gasket 8 move relatively, a lubricating oil film can be formed between the planetary gear 9 and the anti-rotation planetary gear gasket 8, so that the abrasion between the anti-rotation planetary gear gasket 8 and the planetary gear 9 is reduced, and the service life of the part is prolonged; an anti-rotation cross shaft mounting hole 8-3 is arranged at the center of the anti-rotation planetary gear gasket 8, anti-rotation flat 8-2 is arranged at two side edges of the anti-rotation cross shaft mounting hole 8-3 along the diameter direction outer side, the anti-rotation flat 8-2 is matched with the long planetary gear shaft anti-rotation flat 10-1-1 and the short planetary gear shaft anti-rotation flat 10-2-1, the anti-rotation flat 8-2 arranged on the anti-rotation planetary gear gasket 8 is matched with the long planetary gear shaft anti-rotation flat 10-1 arranged on the long planetary gear shaft 10-1 and the short planetary gear shaft anti-rotation flat 10-2-1 arranged on the short planetary gear shaft 10-2, so that the planetary gear gasket 8 can be limited to rotate along the circumferential direction of the anti-rotation cross shaft assembly 10 in the operation process of the differential mechanism assembly, thereby playing a role of preventing rotation, and eliminating the problem that the spherical matching surface 7-3 of the anti-rotation planetary gear gasket arranged on the right differential case 7 is seriously abraded.
As shown in the accompanying drawings 6-8, two short planet gear shaft mounting keyways 10-1-2 are arranged in the middle of the long planet gear shaft 10-1; a short planet gear shaft mounting key 10-2-2 is arranged on the left end part of the short planet gear shaft 10-2; two short planet gear shaft mounting key grooves 10-1-2 arranged on the long planet gear shaft 10-1 are matched with short planet gear shaft mounting keys 10-2-2 arranged on the two short planet gear shafts 10-2 to form an anti-rotation cross shaft assembly 10; the upper and lower planes on the left and right sides of the long planetary gear shaft 10-1 are provided with long planetary gear shaft rotation-preventing flat 10-1-1, and the upper and lower planes on the right side of the short planetary gear shaft 10-2 are provided with short planetary gear shaft rotation-preventing flat 10-2-1; the rotation prevention flat 10-1-1 of the long planetary gear shaft arranged on the long planetary gear shaft 10-1 and the rotation prevention flat 10-2-1 of the short planetary gear shaft arranged on the short planetary gear shaft 10-2 are matched with the rotation prevention flat 8-2 arranged on the rotation prevention planetary gear gasket, so that the planetary gear gasket 8 can be limited to rotate along the circumferential direction of the rotation prevention cross shaft assembly 10 in the operation process of the differential assembly, the rotation prevention effect is achieved, and the problem that the spherical matching surface 7-3 of the rotation prevention planetary gear gasket arranged on the right differential shell 7 is seriously abraded is solved.
As shown in the accompanying drawings 1, 3a, 3b and 9, a method of assembling a novel commercial inter-wheel differential assembly comprises the steps of:
A. the differential bearing 5 is respectively pressed on a differential bearing matching surface 1-3 and a differential bearing mounting surface 7-5 which are arranged on the integrated driven bevel gear 1 and the differential right shell 7 by using a special tool in advance, and the pressing in place is ensured;
B. placing the bottom of a right differential case 7 with a differential bearing pressed downwards on a flat plate, wherein the bottom is one side with a differential bearing mounting surface 7-5;
C. placing the half axle gear gasket 4 in the right differential case 7, enabling the half axle gear gasket 4 to be matched with a half axle gear gasket matching surface 7-4 arranged in the right differential case 7, and then placing the half axle gear 3 on the half axle gear gasket 4;
D. half of the long planet gear shaft 10-1 is arranged in an anti-rotation cross shaft mounting hole 7-1 arranged on the right 7 of the differential mechanism; the anti-rotation planetary gear gasket 8 is arranged in the long planetary gear shaft 10-1 and is arranged in the planetary gear 9; a planetary gear 9 and an anti-rotation planetary gear gasket 8 are also sequentially arranged on the corresponding side of the bearing; completely assembling the long planet gear shaft 10-1 in place, and ensuring that a short planet gear shaft mounting key groove 10-1-2 arranged on the long planet gear shaft is parallel to the central line of the differential right shell 7;
E. half of the short planet gear shaft 10-2 is arranged in an anti-rotation cross shaft mounting hole 7-1 arranged on a right differential case 7; the anti-rotation planetary gear gasket 8 is arranged in the short planetary gear shaft 10-2 and is arranged in the planetary gear 9; completely pushing the short planet gear shaft 10-2 to the right position, and completely matching a short planet gear shaft mounting key 10-2-2 arranged on the short planet gear shaft 10-2 with a short planet gear shaft mounting key groove 10-1-2 arranged on the long planet gear shaft 10-1; assembling the short planet gear shaft 10-2, the anti-rotation planet gear gasket 8 and the planet gear 9 on the corresponding side in place by using the same assembling method;
F. the elastic cylindrical pin 11 is installed in an elastic cylindrical pin installation hole 7-2 formed in the right differential shell 7 by using a special tool, and the assembly in place is guaranteed;
the assembly of the differential right shell assembly 2 is completed;
G. sequentially placing a half axle gear 3, a half axle gear gasket 4 and an integrated driven bevel gear 1 on an assembled differential right shell assembly 2, and ensuring that connecting bolt holes 1-10 arranged on the integrated driven bevel gear 1 are aligned with connecting threaded holes 7-9 arranged on a differential right shell 7;
H. installing the connecting bolt 6 and tightening the connecting bolt 6 with a specified torque;
through the above operational steps, a novel commercial inter-wheel differential assembly as described herein is assembled.
The utility model discloses a driven bevel gear connecting bolt fracture of feedback on the market has not only been eliminated to the structure, the tooth is beaten to the master slaver-action bevel gear, the emergence of the serious scheduling problem of differential case planetary gear sphere wearing and tearing, and the coupling part has still been reduced, and the processing is convenient, assembly process, the production beat has been improved, the transmission efficiency and the reliability of product have been increased, the most importantly new structure's inter-wheel differential mechanism assembly compares in the weight of original structure and alleviates 7.9%, the cost reduction is about 6%, and to the inter-wheel differential mechanism assembly of different speed ratios, differential mechanism right side shell all can generally be exchanged, so not only be favorable to the production tissue, and the interchangeability of product has still been promoted, the tissue efficiency of market spare part, thereby reached the lightweight, the economy, the purpose of lean on-run production.
The above, only be the utility model discloses a best embodiment, it is not right the utility model discloses do any restriction, all according to the utility model discloses any modification, change and the equivalent structure change that the technical entity was done to above embodiment all still belong to the technical scheme's of the utility model protection scope.
Claims (6)
1. A novel commercial inter-wheel differential assembly is characterized by comprising an integrated driven bevel gear (1), a differential right shell assembly (2) and a differential bearing (5); the differential right shell assembly (2) comprises a half axle gear (3), a half axle gear gasket (4), a differential right shell (7), an anti-rotation planetary gear gasket (8), a planetary gear (9), an anti-rotation cross axle assembly (10) and an elastic cylindrical pin (11);
a differential bearing (5) is arranged at the left end of the integrated driven bevel gear (1) along the outer side of the diameter direction; the differential right shell assembly (2) is arranged on the right side of the integrated driven bevel gear (1); the right-hand member of differential mechanism right side shell assembly (2) is along the same differential mechanism bearing (5) of installing in the diameter direction outside, the middle part of differential mechanism right side shell assembly (2) sets up one side gear gasket (4) along the diameter direction inboard, what the left side of side gear gasket (4) set up has one side gear (3), what left side of side gear (3), differential mechanism right side shell assembly (2) set up has one to prevent changeing cross axle assembly (10), prevent changeing on four axostylus axostyles of cross axle assembly (10), the left side inside of differential mechanism right side shell assembly (2) is provided with four and prevents changeing planetary gear gasket (8), be provided with planetary gear (9) in the inboard of preventing changeing planetary gear gasket (8).
2. A novel commercial inter-wheel differential assembly according to claim 1, wherein said integrated driven bevel gear (1) is integrally forged from a driven bevel gear (1-1) and a differential left case (1-2); the driven bevel gear (1-1) is provided with a differential right shell matching hole (1-8) along the diameter direction inner side end face, and the differential right shell matching hole (1-8) is used for matching with an integrated driven bevel gear matching face (7-8) arranged on a differential right shell (7); a half axle gear matching surface (1-7) is arranged on the inner side of the middle part of the left differential case (1-2) and used for mounting a half axle gear gasket (4); the left end of the differential left shell (1-2) is provided with a differential bearing matching surface (1-3) along the outer side of the diameter direction, and the differential bearing matching surface is used for matching with an inner ring roller bearing of a differential bearing (5); a plurality of connecting bolt holes (1-10) are uniformly distributed on the large flange face in the middle of the left differential case (1-2) and are used for being matched and connected with connecting threaded holes (7-9) arranged on the right differential case (7) through connecting bolts (6), so that the integrated driven bevel gear (1) and the right differential case (7) are connected and fixed into a rigid whole; an inter-wheel differential lock end face spline (1-9) is arranged on the left end face of the differential left shell (1-2), and the inter-wheel differential lock end face spline (1-9) is used for being matched with an inter-wheel differential lock moving gear sleeve, so that differential of a left driving wheel and a right driving wheel is prevented, the driving force of a driving axle is improved, and the passing capacity of the whole vehicle is improved; a circle of first lightening holes (1-6) are uniformly distributed on a shell of a differential left shell (1-2) between the connecting bolt holes (1-10) and a bearing matching surface (1-3) of the differential, and first lightening grooves (1-4) and second lightening grooves (1-5) are alternately arranged between the first lightening holes (1-6).
3. A new commercial inter-wheel differential assembly according to claim 2, characterized in that the first weight-reduction grooves (1-4) are shorter in length than the second weight-reduction grooves (1-5) for ensuring the strength of the integrated driven bevel gear (1).
4. A novel commercial inter-wheel differential assembly according to claim 1, characterized in that the left end of the right differential case (7) is provided with an integrated driven bevel gear mating surface (7-8) along the diameter direction outside, and the integrated driven bevel gear mating surface (7-8) is used for being matched and connected with a right differential case mating hole (1-8) formed in the integrated driven bevel gear (1); a differential bearing mounting surface (7-5) is arranged at the outer side of the right end of the differential right shell (7) along the diameter direction and is used for being matched with an inner ring roller bearing of the differential bearing (5); a half axle gear gasket matching surface (7-4) is arranged on the right side of the inner side of the right differential case (7) along the diameter direction and used for mounting a half axle gear gasket (4); four elastic cylindrical pin mounting holes (7-2) are uniformly distributed on the integrated driven bevel gear matching surface (7-8) and used for mounting elastic cylindrical pins (11); a plurality of connecting threaded holes (7-9) are uniformly distributed on the matching surface (7-8) of the integrated driven bevel gear, and the connecting threaded holes (7-9) are used for fixedly connecting the integrated driven bevel gear (1) and the right differential shell (7) into a rigid whole through connecting bolts (6); four anti-rotation cross shaft holes (7-1) are uniformly distributed on the shell between the integrated driven bevel gear matching surface (7-8) and the half axle gear gasket matching surface (7-4), and the anti-rotation cross shaft holes (7-1) are used for installing an anti-rotation cross shaft assembly (10); the inner sides of the four anti-rotation cross shaft holes (7-1) which are uniformly distributed along the axis direction are provided with anti-rotation planetary gear gasket spherical surface matching surfaces (7-3); a plurality of second lightening holes (7-6) are uniformly distributed on the shell between the integrated driven bevel gear matching surface (7-8) and the half axle gear gasket matching surface (7-4) along the circumferential direction and used for enabling gear lubricating oil to smoothly enter the interior of the inter-wheel differential assembly and enhancing the lubrication; and reinforcing ribs (7-7) are arranged between the second lightening holes (7-6) along the circumferential direction and are used for enhancing the rigidity of the right differential case (7).
5. The novel commercial inter-wheel differential assembly according to claim 1, wherein a plurality of oil storage pits (8-1) are uniformly distributed on the anti-rotation planetary gear gasket (8) along the circumferential direction for storing a plurality of lubricating oils in the pit grooves, an anti-rotation cross shaft mounting hole (8-3) is formed in the center of the anti-rotation planetary gear gasket (8), anti-rotation flat plates (8-2) are arranged on two side edges of the anti-rotation cross shaft mounting hole (8-3) along the outer side in the diameter direction, and the anti-rotation flat plates (8-2) are matched with the anti-rotation flat plates (10-1-1) of the long planetary gear shaft and the anti-rotation flat plates (10-2-1) of the short planetary gear shaft; the rotation prevention planetary gear gasket (8) is limited to rotate along the circumferential direction of the rotation prevention cross shaft assembly (10) in the operation process of the differential assembly by matching the rotation prevention flat (8-2) arranged on the rotation prevention planetary gear gasket (8) with the rotation prevention flat (10-1-1) of the long planetary gear shaft arranged on the long planetary gear shaft (10-1) and the rotation prevention flat (10-2-1) of the short planetary gear shaft arranged on the short planetary gear shaft (10-2), so that the rotation prevention function is achieved, and the problem that the spherical matching surface (7-3) of the rotation prevention planetary gear gasket arranged on the right differential shell (7) is seriously abraded is solved.
6. A novel commercial inter-wheel differential assembly according to claim 1, wherein said rotation-preventing cross axle assembly (10) is composed of a long planetary gear shaft (10-1) and two short planetary gear shafts (10-2), said long planetary gear shaft (10-1) having long planetary gear shaft rotation-preventing flat portions (10-1-1) provided on upper and lower flat surfaces on left and right sides thereof, said long planetary gear shaft (10-1) having two short planetary gear shaft mounting key grooves (10-1-2) provided in a middle portion thereof; the upper and lower planes of the right side of the short planetary gear shaft (10-2) are provided with a short planetary gear shaft anti-rotation flat (10-2-1), and the end part of the left side of the short planetary gear shaft (10-2) is provided with a short planetary gear shaft mounting key (10-2-2); the short planet gear shaft mounting key groove (10-1-2) is matched with the short planet gear shaft mounting key (10-2-2) to form an anti-rotation cross shaft assembly (10).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920546240.XU CN210290637U (en) | 2019-04-22 | 2019-04-22 | Novel commercial inter-wheel differential assembly |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920546240.XU CN210290637U (en) | 2019-04-22 | 2019-04-22 | Novel commercial inter-wheel differential assembly |
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| CN210290637U true CN210290637U (en) | 2020-04-10 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109973611A (en) * | 2019-04-22 | 2019-07-05 | 一汽解放汽车有限公司 | Differential assembly and assembly method between a kind of novel commercial wheel |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109973611A (en) * | 2019-04-22 | 2019-07-05 | 一汽解放汽车有限公司 | Differential assembly and assembly method between a kind of novel commercial wheel |
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