CN213541226U - Anti-abrasion structure between inner spherical surface of inter-axle/inter-wheel differential case and planet wheel - Google Patents
Anti-abrasion structure between inner spherical surface of inter-axle/inter-wheel differential case and planet wheel Download PDFInfo
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- CN213541226U CN213541226U CN202022380887.5U CN202022380887U CN213541226U CN 213541226 U CN213541226 U CN 213541226U CN 202022380887 U CN202022380887 U CN 202022380887U CN 213541226 U CN213541226 U CN 213541226U
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- planet wheel
- differential
- differential case
- wheel
- spherical surface
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Abstract
The utility model provides an inter-axle/inter-wheel differential case inner spherical surface and planet wheel abrasion-proof structure, which comprises a differential case and a planet wheel arranged in the inner cavity of the differential case through a cross axle, wherein a quenching layer with hardness larger than HRC50 is arranged at the contact part of the inner spherical surface of the differential case, the periphery of a cross axle mounting hole and the planet wheel; the contact part of the inner spherical surface of the differential shell and the planet wheel is at least provided with an annular oil groove; two arc-shaped oil grooves are symmetrically arranged on the contact surface of the planet wheel and the differential case, and the outer arc surfaces of the arc-shaped oil grooves are close to the center hole of the planet wheel, and the two ends of the arc-shaped oil grooves extend outwards. The utility model provides an among the prior art because set up differential mechanism shell wearing and tearing, the adjusting pad that the adjusting wear pad leads to between interaxial/wheel differential mechanism shell inner spherical surface and planet wheel and break and appear abnormal sound, card die, sintering, lead to the problem of differential mechanism assembly abnormal work.
Description
Technical Field
The utility model relates to an automobile structure technical field, concretely relates to abrasionproof decreases structure between differential mechanism shell inner sphere and planet wheel between axle.
Background
At present, between the inner spherical surface of the differential case between the shafts and the planet wheelsThe connection structure (shown in fig. 1) is: differential case 11A cross shaft 3 is radially arranged in the inner cavity in a penetrating way1A cross axle mounting hole is arranged on the wall of the differential mechanism shell, and each axle of the cross axle is sleeved with a cone-shaped planet wheel 21(four in total), planet wheels and differential case 11An adjusting wear-resistant gasket 9 is arranged between the inner spherical surfaces1The upper and lower parts of the planet wheel are respectively provided with a sun wheel (a half axle gear 8) engaged with the planet wheel, and one end of the differential case is provided with a differential case cover 41By means of bolts 51And an elastic pad 61Flat pad 71The differential shell wall is also provided with a plurality of through fabrication holes; when the differential is used, the differential shell is horizontally arranged along the axial direction and is partially immersed in lubricating oil.
In the process of implementing the present invention, the inventor finds that the connecting structure between the inner spherical surface of the differential case and the planet wheel at least has the following disadvantages:
the interaxial/interaxial differential shell is in a hardened and tempered state, and the hardness is HRC 22-30. After the assembly is assembled, the differential shell is directly contacted with the wear-resistant adjusting wear-resistant gasket, when the planetary gear works, the adjusting wear-resistant gasket is driven to rotate together, the hardness of the planetary gear and the hardness of the adjusting wear-resistant gasket are more than HRC55, and the differential shell is worn quickly. Meanwhile, the adjusting wear-resistant gasket is easy to break due to overlarge stress, and abnormal sound or deadlocking and direct sintering are caused, so that the differential assembly cannot work normally.
Disclosure of Invention
In order to solve because set up differential mechanism shell wearing and tearing, the adjusting pad that the adjusting wear pad leads to between the differential mechanism shell internal sphere and planet wheel between the business shaft \ wheel and break and appear abnormal sound, card die, sintering, lead to the problem of differential mechanism assembly abnormal work, the utility model provides an anti-abrasion structure between differential mechanism shell internal sphere and the planet wheel between the shaft \ wheel.
The invention conception is as follows: in view of the problems of the abrasion of the inner spherical surface of the differential case and the easy breakage of the adjusting abrasion-resistant gasket caused by the adjusting abrasion-resistant gasket, the inventor breaks through the conventional thinking and the inertia thinking, cancels the adjusting abrasion-resistant gasket, and arranges an abrasion-resistant structure between the back surface of the planet wheel and the inner spherical surface of the differential case so as to ensure the normal work of the differential assembly, reduce the maintenance and reduce the cost.
Therefore, the technical scheme of the utility model is that: the utility model provides an anti-abrasion structure between sphere and planet wheel in differential mechanism shell between axle \ wheel, includes the differential mechanism shell and sets up the planet wheel at the differential mechanism shell inner chamber through the cross axle, its characterized in that:
a quenching layer with hardness higher than HRC50 is arranged at the contact part of the planet wheel and the periphery of the inner spherical surface and the cross shaft mounting hole of the differential case;
the contact part of the inner spherical surface of the differential shell and the planet wheel is at least provided with an annular oil groove; two arc-shaped oil grooves are symmetrically arranged on the contact surface of the planet wheel and the differential case, and the outer arc surfaces of the arc-shaped oil grooves are close to the center hole of the planet wheel, and the two ends of the arc-shaped oil grooves extend outwards.
Furthermore, the differential shell adopts a split structure, and the cross shaft is an integral structure.
Furthermore, the differential case is of an integral structure, and the cross shaft is of a split structure.
Has the advantages that:
the utility model breaks the routine, cancels the adjustment of the wear-resistant gasket, reduces the number of parts of the differential assembly and reduces the cost; the quenching layer is arranged, so that the local wear-resisting strength of the differential case is increased; set up an oil groove at least on sphere in the differential case and the planet wheel that corresponds (if sphere and planet wheel size are big in the differential case, the contact surface is big, the quantity of multiplicable oil groove), during the use, can be full of lubricating oil in the sphere oil groove in the differential case of soaking in lubricating oil, during the rotation along oil groove upward movement under the inertial action, in the oil groove of planet wheel is obstructed to flow into in cross axle department, the contact surface of planet wheel and sphere in the differential case is covered with again along the oil groove on the planet wheel, can effectively prevent the wearing and tearing between planet wheel and the differential case, reduce the maintenance, the frequency of maintenance, the normal work of differential assembly has been guaranteed.
Drawings
Fig. 1 is a schematic view of a mounting structure of a conventional differential case and planetary gears.
Fig. 2 is a radial cross-sectional view of the differential case and planet wheel mounting structure of the present invention.
Fig. 3 is an enlarged view of a in fig. 2.
Fig. 4 is a radial cross-sectional view of the differential case of the present invention.
Fig. 5 is a view from a-a in fig. 4.
Fig. 6 is an axial cross-sectional view of the planetary gear of the present invention.
Fig. 7 is a left side view of fig. 6.
Fig. 8 is a view from B-B in fig. 7.
Shown in the figure: 1. a differential case; 2. a planet wheel; 3. a cross shaft; 4. a quenching layer; 5. an annular oil groove; 6. an arc-shaped oil groove.
Detailed Description
The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings, but the embodiment should not be construed as limiting the present invention.
The utility model discloses as shown in fig. 2 to 8:
an anti-abrasion structure between an inner spherical surface of an inter-axle/inter-wheel differential case and a planet wheel comprises a differential case 1 and a planet wheel 2 arranged in an inner cavity of the differential case through a cross shaft 3, wherein a quenching layer 4 with hardness higher than HRC50 is arranged at the contact part of the inner spherical surface of the differential case, the periphery of a cross shaft mounting hole and the planet wheel;
an annular oil groove 5 is arranged at the contact part of the inner spherical surface of the differential case and the planet wheel (the annular oil groove is broken into a plurality of sections at the cross shaft mounting hole and the process hole, but the oil grooves of all sections are fully soaked with lubricating oil when rotating to the lower part, so that the uniform distribution of the lubricating oil on the joint surface of the inner spherical surface of the differential case and the planet wheel can be ensured); two arc-shaped oil grooves 6 are symmetrically arranged on the contact surface of the planet wheel and the differential case, and the outer arc surfaces of the arc-shaped oil grooves are close to the center hole of the planet wheel, and the two ends of the arc-shaped oil grooves extend outwards.
The differential case 1 adopts a split structure, and the cross shaft adopts an integral structure, so that the installation is convenient, and the number of components is reduced.
The differential case 1 adopts an integral structure, and the cross shaft adopts a split structure and is convenient to install.
The material of the differential case may be an iron or steel casting or a steel forging.
Those skilled in the art will appreciate that the details of the present invention are not described in detail herein.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (3)
1. The utility model provides an anti-abrasion structure between sphere and planet wheel in differential mechanism shell between axle \ wheel, includes the differential mechanism shell and sets up the planet wheel at the differential mechanism shell inner chamber through the cross axle, its characterized in that:
a quenching layer with hardness higher than HRC50 is arranged at the contact part of the planet wheel and the periphery of the inner spherical surface and the cross shaft mounting hole of the differential case;
the contact part of the inner spherical surface of the differential shell and the planet wheel is at least provided with an annular oil groove; two arc-shaped oil grooves are symmetrically arranged on the contact surface of the planet wheel and the differential case, and the outer arc surfaces of the arc-shaped oil grooves are close to the center hole of the planet wheel, and the two ends of the arc-shaped oil grooves extend outwards.
2. The anti-abrasion structure between the inner spherical surface of the inter-axle/inter-wheel differential case and the planet wheel of claim 1, wherein: the differential shell adopts a split structure, and the cross shaft is an integral structure.
3. The anti-abrasion structure between the inner spherical surface of the inter-axle/inter-wheel differential case and the planet wheel of claim 1, wherein: the differential shell adopts an integral structure, and the cross shaft is a split structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022380887.5U CN213541226U (en) | 2020-10-23 | 2020-10-23 | Anti-abrasion structure between inner spherical surface of inter-axle/inter-wheel differential case and planet wheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022380887.5U CN213541226U (en) | 2020-10-23 | 2020-10-23 | Anti-abrasion structure between inner spherical surface of inter-axle/inter-wheel differential case and planet wheel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213541226U true CN213541226U (en) | 2021-06-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022380887.5U Active CN213541226U (en) | 2020-10-23 | 2020-10-23 | Anti-abrasion structure between inner spherical surface of inter-axle/inter-wheel differential case and planet wheel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213541226U (en) |
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2020
- 2020-10-23 CN CN202022380887.5U patent/CN213541226U/en active Active
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