CN214534393U - Main reducer ventilation structure and main reducer - Google Patents
Main reducer ventilation structure and main reducer Download PDFInfo
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- CN214534393U CN214534393U CN202120371867.3U CN202120371867U CN214534393U CN 214534393 U CN214534393 U CN 214534393U CN 202120371867 U CN202120371867 U CN 202120371867U CN 214534393 U CN214534393 U CN 214534393U
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Abstract
The utility model provides a main reducer ventilation structure, which comprises a first labyrinth cavity and a second labyrinth cavity formed between a main reducer shell and a main reducer cover by surrounding due to the connection between the main reducer shell and the main reducer cover, wherein the first labyrinth cavity is communicated with the inside of the main reducer through a ventilation inlet, the first labyrinth cavity is communicated with the second labyrinth cavity through a communication port, and a ventilation valve mounting hole communicated with the inside of the second labyrinth cavity is arranged on the main reducer shell or the main reducer cover; the ventilating inlet and the communicating opening and the ventilating valve mounting hole are arranged in a left-right staggered mode, a bulge located on a main speed reducer shell or a main speed reducer cover is arranged at the ventilating inlet, the bulge forms shielding of the ventilating inlet, and the ventilating inlet is communicated with the inside of the main speed reducer through an opening located in the horizontal direction. The utility model discloses a main reducer ventilation structure can avoid main reducer internal gear fluid direct impact air vent entry to prevent that fluid from rushing out the breather valve and the oil leak condition that leads to.
Description
Technical Field
The utility model relates to an automobile parts technical field, in particular to main reducer ventilation structure. Furthermore, the utility model discloses still relate to a main reducer.
Background
When a vehicle runs, because the internal gear of the main speed reducer rotates continuously, the temperature in the main speed reducer rises, the air pressure is increased, and in order to ensure that the pressure in the cavity is maintained at a certain level, the pressure of a sealing piece is relieved and the phenomenon of oil leakage is prevented, a ventilation structure is generally added on the main speed reducer to discharge expanded gas. However, main reducer is after setting up vent structure, because gear fluid splashes along with the rotation of inside gear, outside the vent valve discharge main reducer along with high-pressure gas very easily, leads to the car to appear the oil impregnate phenomenon, influences the auttombilism and experiences, and long-time seepage fluid still can lead to the bearing to lubricate badly to the ablation bearing influences the main reducer life-span.
At present, for preventing that the oil impregnate condition from taking place, generally can set up the oil baffle under the air vent in the air-permeable structure, however the oil that the part splashes can pass through the air vent from the space of oil baffle, and the result of use is not good, and sets up the oil baffle and need additionally assemble the screw hole, increases the material and drops into to can influence casing self structure, be unfavorable for whole car and arrange.
SUMMERY OF THE UTILITY MODEL
In view of this, the present invention is directed to a main reducer ventilation structure to reduce the impact of oil on the ventilation valve in the gear of the main reducer, so as to prevent the oil leakage of the main reducer.
In order to achieve the above purpose, the technical scheme of the utility model is realized like this:
a main speed reducer ventilation structure comprises a first labyrinth cavity and a second labyrinth cavity which are formed between a main speed reducer shell and a main speed reducer cover in a surrounding mode due to connection between the main speed reducer shell and the main speed reducer cover, wherein the first labyrinth cavity is communicated with the interior of a main speed reducer through a ventilation inlet, the first labyrinth cavity is communicated with the second labyrinth cavity through a communication port, and a ventilation valve mounting hole communicated with the second labyrinth cavity is formed in the main speed reducer shell or the main speed reducer cover;
wherein: the ventilation inlet and the communication port, and the communication port and the ventilation valve mounting hole are arranged in a left-right staggered manner, a protrusion located on the main speed reducer shell or the main speed reducer cover is arranged at the ventilation inlet, and the protrusion shields the ventilation inlet, so that the ventilation inlet is communicated with the inside of the main speed reducer through an opening located in the horizontal direction.
Further, the ventilating inlet is located on the main speed reducer shell, the communication port is located on the main speed reducer cover, and the protrusion is located on the main speed reducer shell.
Further, the vent valve mounting hole is located on the main speed reducer case.
Further, the main speed reducer casing has a main speed reducer casing outer wall, a main speed reducer casing inner wall, and a main speed reducer casing ridge connected between the main speed reducer casing outer wall and the main speed reducer casing inner wall at both ends, and the main speed reducer cover includes a main speed reducer cover outer wall, a main speed reducer cover inner wall, and a main speed reducer cover ridge connected between the main speed reducer cover outer wall and the main speed reducer cover inner wall at both ends;
the outer wall of the main speed reducer shell and the outer wall of the main speed reducer cover, the inner wall of the main speed reducer shell and the inner wall of the main speed reducer cover, and the convex edges of the main speed reducer shell and the convex edges of the main speed reducer cover are arranged oppositely, and the first labyrinth cavity and the second labyrinth cavity are formed by buckling surrounding structures of the main speed reducer shell and the main speed reducer cover.
Further, the vent inlet includes a vent groove formed on an inner wall of the main speed reducer case, and a vent surrounded by the protrusion that communicates with the vent groove.
Further, the communication port includes a communication groove configured on the main speed reducer cover ridge.
Furthermore, the main speed reducer shell convex edge and the main speed reducer cover convex edge are arranged obliquely relative to the horizontal direction, the communication groove is located at the lower end of the main speed reducer cover convex edge, and the ventilation groove is arranged corresponding to the higher end of the main speed reducer shell convex edge.
Furthermore, the included angle between the main speed reducer shell convex edge and the main speed reducer cover convex edge and the horizontal direction is not less than 10 degrees.
Further, the main speed reducer shell and the main speed reducer cover are both formed by casting.
Compared with the prior art, the utility model discloses following advantage has:
the main speed reducer ventilation structure of the utility model has the advantages that through the two communicated labyrinth cavities arranged in the main speed reducer and the staggered arrangement of the ventilation inlet, the communication port and the ventilation valve, the path of gas passing through the ventilation structure can be prolonged, and the direct impact of gear oil on the ventilation port inlet can be avoided, so that the oil leakage problem caused by the outflow of the gear oil through the ventilation port is prevented; and through being equipped with the arch at the entrance of ventilating, and can constitute to the fluid of the entrance of ventilating and block to reduce during fluid gets into the ventilation structure, and then promote ventilation structure's gaseous circulation effect.
In addition, the labyrinth cavity is formed by constructing the convex edges in the main speed reducer shell by adopting the casting molding process, so that an oil blocking component can be reduced for external assembly, the material cost is saved, the size of the main speed reducer shell is ensured, and the whole vehicle arrangement is facilitated; the convex edges are obliquely arranged relative to the horizontal direction, so that oil impacting on the convex edges can conveniently flow back along the convex edges under the influence of gravity, the oil entering the ventilation structure can conveniently flow out of the ventilation inlet, and the retention of the oil in the ventilation structure is reduced.
Another objective of the present invention is to provide a main reducer, which includes a main reducer casing and a main reducer cover connected to each other, and the main reducer ventilation structure is disposed on the main reducer, and the vent valve is mounted at the vent valve mounting hole.
Compared with the prior art, main reducer and foretell main reducer ventilation structure have the same beneficial effect, no longer describe herein.
Drawings
The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:
fig. 1 is a schematic cross-sectional view of a part of a main speed reducer casing according to a first embodiment of the present invention;
fig. 2 is a schematic structural diagram of a part of a main speed reducer cover according to a first embodiment of the present invention;
fig. 3 is a schematic view of an exhaust path of a main reducer ventilation structure according to a first embodiment of the present invention;
description of reference numerals:
1. a main reducer case; 2. a main speed reducer cover; 3. a vent valve;
11. a first labyrinth cavity; 12. a second labyrinth cavity; 13. a vent inlet; 14. the groove is communicated;
101. a protrusion; 102. the outer wall of the main speed reducer shell; 103. the inner wall of the main speed reducer shell; 104. the main speed reducer shell flange;
131. a vent groove; 132. a vent;
201. the outer wall of the main speed reducer cover; 202. the inner wall of the main speed reducer cover; 203. the main speed reducer cover flange.
Detailed Description
It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it should be noted that, if terms indicating orientation or positional relationship such as "upper", "lower", "inner", "outer", etc. appear, they are based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the appearances of the terms first, second, etc. in this specification are not necessarily all referring to the same item, but are to be construed as indicating or implying any particular importance.
In addition, in the description of the present invention, the terms "mounted," "connected," and "connecting" are to be construed broadly unless otherwise specifically limited. For example, the connection can be fixed, detachable or integrated; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. To those of ordinary skill in the art, the specific meaning of the above terms in the present invention can be understood in combination with the specific situation.
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
Example one
The present embodiment relates to a final drive breather structure that includes a first labyrinth cavity and a second labyrinth cavity formed therebetween around the connection between a final drive case and a final drive cover.
The first labyrinth cavity is communicated with the inside of the main speed reducer through a ventilation inlet, the first labyrinth cavity is communicated with the second labyrinth cavity through a communication port, and a ventilation valve mounting hole communicated with the inside of the second labyrinth cavity is formed in a main speed reducer shell or a main speed reducer cover; the ventilating inlet and the communicating opening and the ventilating valve mounting hole are arranged in a left-right staggered mode, a bulge located on a main speed reducer shell or a main speed reducer cover is arranged at the ventilating inlet, the bulge forms shielding of the ventilating inlet, and the ventilating inlet is communicated with the inside of the main speed reducer through an opening located in the horizontal direction.
Based on the above overall structure design, an exemplary structure of the main speed reducer ventilation structure of the present embodiment is shown in fig. 1 and fig. 2, wherein the main speed reducer is an important component of the whole vehicle layout, the interior of the main speed reducer should be provided with an existing mature assembly structure for normal operation of the vehicle body in addition to the ventilation valve 3, and an existing mature shell can also be adopted for the overall shape of the main speed reducer shell, which is not described in detail in the present embodiment.
The above-mentioned ventilation inlet 13 may be provided on the final drive casing 1, the communication port may be provided on the final drive cover 2, and the protrusion 101 and the ventilation valve mounting hole may be provided on the final drive casing 1, so as to constitute a whole ventilation structure inside the final drive, but it is needless to say that the arrangement of the above-mentioned inlets, the protrusion 101 and the ventilation valve mounting hole on the final drive casing 1 or the final drive cover 2 may be flexibly adjusted according to the actual shape of the final drive casing, and this embodiment is not particularly limited thereto.
In the present embodiment, as a preferred embodiment, main speed reducer case 1 has a main speed reducer case inner wall 102, a main speed reducer case inner wall 103, and a main speed reducer case ridge 104 connected at both ends between main speed reducer case inner wall 102 and main speed reducer case inner wall 103, and main speed reducer cover 2 includes a main speed reducer cover outer wall 201, a main speed reducer cover inner wall 202, and a main speed reducer cover ridge 203 connected at both ends between main speed reducer cover outer wall 201 and main speed reducer cover inner wall 202. The inner wall 102 of the main speed reducer case and the outer wall 201 of the main speed reducer case, the inner wall 103 of the main speed reducer case and the inner wall 202 of the main speed reducer case, and the flange 104 of the main speed reducer case and the flange 203 of the main speed reducer case are arranged oppositely, and a first labyrinth cavity 11 and a second labyrinth cavity 12 are formed by the buckling surrounding of the main speed reducer case 1 and the main speed reducer cover 2.
Here, main reducer shell 1 and main reducer lid 2 all adopt the casting shaping, and protruding stupefied via the casting shaping technology shaping in main reducer shell 1 and main reducer lid 2 inside, through this setting, reducible assembly in main reducer outside keeps off the oil component, is favorable to material saving cost to guarantee main reducer shell size, thereby do benefit to whole car and arrange.
As shown in fig. 2, the ventilation inlet 13 includes a ventilation groove 131 formed in the inner wall 103 of the main speed reducer case and a ventilation opening 132 surrounded by the protrusion 101 and communicating with the ventilation groove 131, based on the use of the ridge as an oil barrier. Preferably, the ventilation grooves 131 are illustrated as a mesh region 1 in the figure, the protrusions 101 are triangular and enclosed, and the ventilation grooves 131 are formed on the opposite sides of the enclosed protrusions 101, so that oil entering the ventilation holes 132 is blocked by the protrusions 101 to enter the ventilation grooves 131, thereby being beneficial to reducing the oil entering the labyrinth cavity. Of course, the projection 101 may be configured in other shapes than those shown.
When the structure of the vent groove 131 is adopted, as a preferred embodiment, the communication port includes a communication groove 14 formed on the main speed reducer cover ridge 203, and the communication groove 14 is illustrated as a grid-like area in fig. 2, and is recessed with respect to the main speed reducer cover ridge 203, and thus constitutes a communication passage for gas and oil to enter the second labyrinth cavity 12. Here, further, the main speed reducer case flange 104 and the main speed reducer cover flange 203 are disposed to be inclined with respect to the horizontal direction, the communication groove 14 is located at a lower end of the main speed reducer cover flange 203, and the ventilation groove 131 is provided corresponding to a higher end of the main speed reducer case flange 104. Through the arrangement, left-right staggered arrangement between the vent inlet 13 and the communication port can be realized, and the mounting position of the vent valve mounting hole is arranged at the other end of the convex edge opposite to the communication groove 14, so that left-right staggered arrangement of the communication port and the vent valve mounting hole is realized.
The communicating groove 14 is arranged corresponding to the main speed reducer shell convex edge 104 and the main speed reducer cover convex edge 203, and preferably, an included angle between the main speed reducer convex edge and the main speed reducer cover convex edge 203 and the horizontal direction is not less than 10 degrees, so that oil splashed onto the convex edges can conveniently flow back along the convex edges under the influence of an inclination angle and gravity, and residual oil entering the second labyrinth cavity 12 can conveniently enter the first labyrinth cavity 11 along the inclined convex edges again through the communicating groove 14, so that the oil entering the ventilation structure can conveniently flow out of the ventilation inlet 13, and the retention of the oil in the ventilation structure is reduced.
As shown in fig. 3, when the oil mixed with the splashed gas passes through the vent 132, part of the oil is blocked by the protrusion 101 arranged in the wrapping manner and stays in the wrapping loop formed by the protrusion 101, the rest of the oil and the gas enter the first labyrinth cavity 11 through the vent groove 131, part of the impacted oil is blocked by the contact fit of the main reducer casing convex ridge 104 and the main reducer cover convex ridge 203 after being buckled, the rest of the oil and the gas in the first labyrinth cavity 11 enter the second labyrinth cavity 12 through the communication groove 14, and when the oil is in the second labyrinth cavity 12, the rest of the oil is blocked by the contact fit of the main reducer casing inner wall 103 and the main reducer casing inner wall 103 after being buckled, the oil flows back to the first labyrinth cavity 11 along the contact fit convex ridge, and the gas is discharged out of the main reducer through the vent valve 3.
The main speed reducer ventilation structure of the utility model has two communicated labyrinth cavities arranged in the main speed reducer, and the ventilation inlet 13 and the communication port, the communication port and the ventilation valve 3 are arranged in a staggered way, so that the path of gas passing through the ventilation structure can be prolonged, and the gear oil can be prevented from directly impacting the ventilation inlet, thereby preventing the oil leakage problem caused by the gear oil flowing out through the ventilation valve 3; the protrusion 101 is arranged at the ventilation inlet 13, so that oil at the ventilation inlet 13 can be blocked, thereby reducing the oil entering the ventilation structure, and further improving the gas circulation effect of the ventilation structure.
Example two
The present embodiment is directed to a final drive unit, which includes a final drive unit case 1 and a final drive unit cover 2 connected to each other, wherein a vent structure as described in the first embodiment is provided on the final drive unit, and a vent valve 3 is installed at a vent valve installation hole, and here, a conventional and mature installation technology can be adopted for an installation form between the final drive unit case 1 and the final drive unit cover 2, which is not described again in the present embodiment.
The main reducer of this embodiment through setting up as in embodiment one ventilation structure, and can avoid taking out gear fluid from breather valve 3 to prevent the condition of main reducer oil leak, be favorable to prolonging main reducer's life, thereby promote whole car result of use.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A main reducer ventilation structure is characterized in that: the main speed reducer comprises a first labyrinth cavity (11) and a second labyrinth cavity (12) which are formed between a main speed reducer shell (1) and a main speed reducer cover (2) in a surrounding mode due to connection between the main speed reducer shell and the main speed reducer cover, the first labyrinth cavity (11) is communicated with the interior of the main speed reducer through a ventilation inlet (13), the first labyrinth cavity (11) is communicated with the second labyrinth cavity (12) through a communication port, and a ventilation valve mounting hole communicated with the interior of the second labyrinth cavity (12) is formed in the main speed reducer shell (1) or the main speed reducer cover (2);
wherein: the ventilation inlet (13) and the communication port, and the communication port and the ventilation valve mounting hole are arranged in a left-right staggered manner, a protrusion (101) located on the main speed reducer shell (1) or the main speed reducer cover (2) is arranged at the ventilation inlet (13), and the protrusion (101) shields the ventilation inlet (13), so that the ventilation inlet (13) is communicated with the inside of the main speed reducer through an opening located in the horizontal direction.
2. A final drive vent structure according to claim 1, wherein: the ventilation inlet (13) is located on the main speed reducer case (1), the communication port is located on the main speed reducer cover (2), and the protrusion (101) is located on the main speed reducer case (1).
3. A final drive vent structure according to claim 2, wherein: the vent valve mounting hole is located on the main speed reducer case (1).
4. A final drive vent structure according to claim 3, wherein:
the main speed reducer shell (1) is provided with a main speed reducer shell outer wall (102), a main speed reducer shell inner wall (103) and a main speed reducer shell convex ridge (104) with two ends connected between the main speed reducer shell outer wall (102) and the main speed reducer shell inner wall (103), and the main speed reducer cover (2) comprises a main speed reducer cover outer wall (201), a main speed reducer cover inner wall (202) and a main speed reducer cover convex ridge (203) with two ends connected between the main speed reducer cover outer wall (201) and the main speed reducer cover inner wall (202);
the main speed reducer shell outer wall (102) and the main speed reducer cover outer wall (201), the main speed reducer shell inner wall (103) and the main speed reducer cover inner wall (202), and the main speed reducer shell flange (104) and the main speed reducer cover flange (203) are arranged oppositely, and the first labyrinth cavity (11) and the second labyrinth cavity (12) are formed by the buckling surrounding structure of the main speed reducer shell (1) and the main speed reducer cover (2).
5. A final drive vent structure according to claim 4, wherein: the ventilation inlet (13) comprises a ventilation groove (131) formed on the inner wall (103) of the main speed reducer casing, and a ventilation opening (132) which is communicated with the ventilation groove (131) and surrounded by the protrusion (101).
6. A final drive vent structure according to claim 5, wherein: the communication port includes a communication groove (14) configured on the main speed reducer cover flange (203).
7. A final drive vent structure according to claim 6, wherein: the main speed reducer shell convex edge (104) and the main speed reducer cover convex edge (203) are arranged in an inclined mode relative to the horizontal direction, the communication groove (14) is located at the lower end of the main speed reducer cover convex edge (203), and the ventilation groove (131) is arranged corresponding to the higher end of the main speed reducer shell convex edge (104).
8. A final drive vent structure according to claim 7, wherein: the included angle between the main speed reducer shell convex edge (104) and the main speed reducer cover convex edge (203) and the horizontal direction is not less than 10 degrees.
9. A final drive vent structure according to any one of claims 1 to 8, wherein: the main speed reducer shell (1) and the main speed reducer cover (2) are both formed by casting.
10. A final drive, characterized by: the main speed reducer comprises a main speed reducer shell (1) and a main speed reducer cover (2) which are connected, a main speed reducer ventilation structure of any one of claims 1 to 9 is arranged on the main speed reducer, and a ventilation valve (3) is arranged at a ventilation valve mounting hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120371867.3U CN214534393U (en) | 2021-02-08 | 2021-02-08 | Main reducer ventilation structure and main reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120371867.3U CN214534393U (en) | 2021-02-08 | 2021-02-08 | Main reducer ventilation structure and main reducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214534393U true CN214534393U (en) | 2021-10-29 |
Family
ID=78235140
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120371867.3U Active CN214534393U (en) | 2021-02-08 | 2021-02-08 | Main reducer ventilation structure and main reducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214534393U (en) |
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2021
- 2021-02-08 CN CN202120371867.3U patent/CN214534393U/en active Active
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