CN218236037U - Main reducer assembly of drive axle and drive axle - Google Patents
Main reducer assembly of drive axle and drive axle Download PDFInfo
- Publication number
- CN218236037U CN218236037U CN202221486784.XU CN202221486784U CN218236037U CN 218236037 U CN218236037 U CN 218236037U CN 202221486784 U CN202221486784 U CN 202221486784U CN 218236037 U CN218236037 U CN 218236037U
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- bevel gear
- driven bevel
- limiting
- shell
- driving bevel
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Abstract
The utility model discloses a main reducer assembly of a drive axle and the drive axle, wherein the main reducer assembly of the drive axle comprises a shell, a driving bevel gear, a driven bevel gear and a locating part fixed on the shell; one surface of the driven bevel gear, which is close to the driving bevel gear, is provided with a conical surface, one surface of the driven bevel gear, which is far away from the driving bevel gear, is provided with a matching surface, and the conical surface is provided with teeth meshed with the driving bevel gear; the limiting part is connected to the side wall of the shell in a penetrating mode and fixedly matched with the side wall of the shell, the inner side end of the limiting part forms a limiting end, the driven bevel gear is arranged between the limiting end and the driving bevel gear, the limiting end is located on the outer side of the matching surface to form a limiting mechanism with the matching surface, and the limiting mechanism is used for preventing the driven bevel gear from moving towards the direction far away from the driving bevel gear. The utility model discloses when the vehicle is in low-speed, big torque state, prevent that driven bevel gear from taking place beat by a relatively large margin when rotating, ensure the meshing that drive bevel gear and driven bevel gear can be better.
Description
Technical Field
The utility model relates to the technical field of vehicles, concretely relates to main reducer subassembly and transaxle of transaxle.
Background
The utility model discloses a commercial vehicle's transaxle generally includes the axle housing and installs the final drive assembly on the axle housing, final drive is the core part of vehicle power transmission, it generally includes the casing, install the drive bevel gear in the casing, install in the casing and with the driven bevel gear of drive bevel gear meshing, the power of vehicle engine is in proper order via drive bevel gear, driven bevel gear, differential mechanism and the wheel end of arranging the transmission shaft transmission in the axle housing in to the vehicle, in order to adapt the installation of differential mechanism, driven bevel gear is generally set up to the disc that the diameter is great, set up the tooth with driven bevel gear meshing on the conical surface that its periphery set up, therefore, driven bevel gear's radius of rotation is great relatively, when the vehicle is low-speed, big moment of torsion driving, driven bevel gear can appear the beat, thereby can not be better with the drive bevel gear meshing, influence power transmission efficiency, the oil consumption of vehicle has been increased.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a main reducer subassembly of transaxle, it can avoid driven bevel gear to take place deflection by a relatively large margin, promotes the power transmission efficiency of vehicle.
The second purpose of the utility model is to provide a drive axle.
In order to achieve the above object, the utility model adopts the following technical scheme:
the main speed reducer assembly of the drive axle comprises a shell, a driving bevel gear, a driven bevel gear and a limiting piece, wherein the driving bevel gear is connected in the shell in a penetrating mode and is in pivot fit with the shell;
one surface of the driven bevel gear, which is close to the driving bevel gear, is provided with a conical surface, one surface of the driven bevel gear, which is far away from the driving bevel gear, is provided with a matching surface, and the conical surface is provided with teeth meshed with the driving bevel gear;
the limiting part is connected to the side wall of the shell in a penetrating mode and fixedly matched with the side wall of the shell, the inner side end of the limiting part forms a limiting end, the driven bevel gear is arranged between the limiting end and the driving bevel gear, the limiting end is located on the outer side of the matching surface to form a limiting mechanism with the matching surface, and the limiting mechanism is used for preventing the driven bevel gear from moving towards the direction far away from the driving bevel gear.
A threaded hole is formed in the side wall of the shell, the limiting part is a thrust bolt screwed in the threaded hole, and the extension direction of the thrust bolt is parallel to the axis of the rotating shaft of the driven bevel gear.
The inner side end face of the thrust bolt forms a limiting end, a gap with the width h is formed between the limiting end and the matching surface, and h is more than or equal to 0.6mm and less than or equal to 1.3mm.
The width h is 0.9mm.
The end face of the inner side of the thrust bolt is an arc-shaped face with the middle part protruding towards the matching face.
The part of the thrust bolt, which is positioned outside the side wall of the shell, is screwed with a locknut, and the locknut is propped against the outer surface of the side wall of the shell.
The central axis of the thrust bolt is vertical to the central axis of the drive bevel gear and is positioned on the same plane.
In order to achieve the second purpose, the utility model adopts the following technical scheme:
the drive axle comprises the main speed reducer assembly of the drive axle.
The beneficial effects of the utility model reside in that:
the utility model discloses a fixed locating part on the casing, inside this locating part stretched into the casing, it is corresponding, set up the spacing end cooperation that forms with the locating part inboard end on driven bevel gear, constitute a stop gear, the vehicle is at the low-speed, when big torque state, stop gear can prevent that driven bevel gear and the part of drive bevel gear contact from moving towards keeping away from drive bevel gear, thereby prevent that driven bevel gear from taking place more beat by a wide margin when rotating, ensure the meshing that drive bevel gear and driven bevel gear can be better, the power transmission efficiency of vehicle has been promoted.
Drawings
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is an enlarged view at a in fig. 1.
Detailed Description
The invention will be further described with reference to the accompanying drawings and specific embodiments:
as shown in fig. 1 and 2, a main reducer assembly of a drive axle according to the present invention includes a housing 10, a drive bevel gear 20, a driven bevel gear 30, and a thrust bolt 40, wherein the housing 10 is fixedly connected to an axle housing of the drive axle, the drive bevel gear 20 is inserted into the housing 10 and pivotally engaged with the housing 10, specifically, a mounting seat 12 is fixed to the housing 10, an axle of the drive bevel gear 20 is inserted into the mounting seat 12 and pivotally engaged with the mounting seat 12 through a bearing 13 and a bearing 14, the drive bevel gear 20 is inserted into the housing 10 to pivotally engage with the housing 10, the driven bevel gear 30 is disposed inside the housing 10 and pivotally engaged with the housing 10, a rotation axis of the driven bevel gear 30 is perpendicular to a rotation axis of the drive bevel gear 20, a mating surface 32 is formed on a side close to the drive bevel gear 20, a mating surface 31 is formed on a side away from the drive bevel gear 20, and teeth engaged with the drive bevel gear 20 are provided on the driven bevel gear 32, so that a driving force can be transmitted to the driven bevel gear 30 through the drive bevel gear 20; the thrust bolt 40 is inserted into the side wall 11 of the housing 10 to be fixedly engaged with the side wall 11 of the housing 10, and specifically, a threaded hole is formed in the side wall 11 of the housing 10, the thrust bolt 40 is inserted into the threaded hole, an inner side end of the thrust bolt 40 extends into the housing 10, and an inner side end face 41 of the thrust bolt 40 forms a limit end facing the engagement face 31, so that the driven bevel gear 30 is disposed between the drive bevel gear 20 and the inner side end face 41 serving as the limit end, and the inner side end face 41 and the engagement face 31 form a limit mechanism for preventing the driven bevel gear 30 from moving in a direction away from the drive bevel gear 20.
The thrust bolt 40 is fixed on the housing 10, so that the inner side end of the thrust bolt 40 is arranged on the back surface of the meshing part of the driven bevel gear 30 and the drive bevel gear 20, the thrust bolt 40 is used for limiting the driven bevel gear 30 to swing towards the direction far away from the drive bevel gear 20, when the vehicle is in a low-speed and high-torque state, the drive bevel gear 30 is abutted against the thrust bolt 40 when stressed due to the fact that the drive bevel gear 20 generates large stress on the driven bevel gear 30, large displacement of the driven bevel gear 30 when swinging towards the direction far away from the drive bevel gear 20 is avoided, the fact that the fit clearance between teeth of the drive bevel gear 20 and the driven bevel gear 30 is not too large is guaranteed, power can be stably and smoothly transmitted from the drive bevel gear 20 to the driven bevel gear 30 is guaranteed, and the power transmission efficiency of the vehicle is improved. In a preferred embodiment, a gap with a width h of 0.6mm or more and 1.3mm or less is formed between the inner side surface 41 of the thrust bolt 40 and the mating surface 31, and when the vehicle is in a high-speed and low-torque state, because the driven bevel gear 30 can be well matched with the drive bevel gear 20, the driven bevel gear 30 does not deflect or does not deflect to a large extent, the gap is set to prevent the mating surface 31 of the driven bevel gear 30 from contacting the inner side surface 31 of the thrust bolt 40, thereby preventing frictional resistance from being generated between the thrust bolt 40 and the driven bevel gear 30, i.e., the thrust bolt is set to limit the driven bevel gear 30 when the vehicle is in a low-speed and high-torque state, and limit the swing amplitude of the thrust bolt 40 when the driven bevel gear 30 swings away from the drive bevel gear 20, and prevent the thrust bolt from contacting the driven bevel gear 30 according to the gap between the inner side surface 41 of the thrust bolt 40 and the mating surface 31 when the vehicle is in a high-speed and low-torque state, thereby ensuring that the vehicle can normally run, the gap is set to be 0.e., and the gap of the mating surface 41 of the intermediate surface of the thrust bolt 40 is set to reduce the contact with the mating surface 31 of the mating surface of the intermediate surface of the driven bevel gear 30, thereby reducing the wear of the area of the inner side surface of the driven bevel gear 30.
The utility model discloses when the equipment, with thrust bolt 40 outside-in cross-under in the screw hole of seting up on lateral wall 11 of casing 10, the thrust bolt 40 of screwing is until medial surface 41 roof pressure on driven bevel gear 30's fitting surface 31, then paints the thread sealing glue in thrust bolt 40 and screw hole complex clearance, and reverse rotation thrust bolt 40 is about 0.5 circle-0.75 circle after that, makes to form above-mentioned width for the clearance of h between thrust bolt 40's medial surface 41 and the fitting surface 31. In order to prevent the thrust bolt 40 from loosening, a locknut 50 is screwed on the part of the thrust bolt 40, which is positioned outside the side wall 11 of the shell 10, the locknut 50 abuts against the outer surface of the side wall 11 of the shell 10, after the thrust bolt 40 is rotated reversely and the gap is adjusted, the locknut 50 is screwed, so that the locknut 50 abuts against the outer surface of the side wall 11, and the thrust bolt 40 is locked to prevent the thrust bolt 40 from loosening during the driving process of the vehicle.
The utility model discloses in, thrust bolt 40's the central axis O2 is perpendicular with drive bevel gear 20's the central axis O1 to central axis O2 and central axis O1 are located same plane, make thrust bolt 40, drive bevel gear 20, driven bevel gear 30's the central axis all be in the coplanar, when thrust bolt 40 and driven bevel gear 30 contact, drive bevel gear 20, driven bevel gear 30, thrust bolt 40 atress each other are more reasonable.
In the above embodiment, the thrust bolt 40 is used as a limiting part, and is fixed with the side wall 11 of the housing 10 in a threaded manner, in other embodiments of the present invention, the limiting part is not limited to the thrust bolt 40, and may also be a limiting pin or a limiting block fixed in the housing 10, for example, a limiting pin may be fixed on the inner surface of the side wall 11 of the housing 10, and the inner side end surface of the limiting pin is matched with the matching surface 31 of the driven bevel gear 30 to form a limiting mechanism, in short, the limiting part can prevent the driven bevel gear 30 from moving towards the direction away from the driving bevel gear 40, so as to prevent the driven bevel gear from swinging when rotating.
The drive axle of the present invention includes the main reducer assembly of the above drive axle, and other structures of the drive axle are the same as those of the prior art, and are not described in detail here.
Compared with the prior art, the utility model discloses a fixed locating part on the casing, inside this locating part stretched into the casing, it is corresponding, set up the spacing end cooperation that forms with the inboard end of locating part on driven bevel gear, constitute a stop gear, the vehicle is at the low-speed, when big torque state, stop gear can prevent that driven bevel gear from moving towards keeping away from driving bevel gear with the part that the drive bevel gear contacted, thereby prevent that driven bevel gear from taking place deflection by a relatively large margin when rotating, ensure the meshing that driving bevel gear and driven bevel gear can be better, the power transmission efficiency of vehicle has been promoted.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (8)
1. The main speed reducer assembly of the drive axle is characterized by comprising a shell, a driving bevel gear, a driven bevel gear and a limiting piece, wherein the driving bevel gear is connected in the shell in a penetrating mode and is in pivot fit with the shell;
one surface of the driven bevel gear, which is close to the driving bevel gear, is provided with a conical surface, one surface of the driven bevel gear, which is far away from the driving bevel gear, is provided with a matching surface, and the conical surface is provided with teeth meshed with the driving bevel gear;
the limiting part is connected to the side wall of the shell in a penetrating mode and fixedly matched with the side wall of the shell, the inner side end of the limiting part forms a limiting end, the driven bevel gear is arranged between the limiting end and the driving bevel gear, the limiting end is located on the outer side of the matching surface to form a limiting mechanism with the matching surface, and the limiting mechanism is used for preventing the driven bevel gear from moving towards the direction far away from the driving bevel gear.
2. The final drive assembly of a transaxle of claim 1 wherein the housing has a threaded hole formed in a side wall thereof, and the stopper is a thrust bolt threadedly received in the threaded hole, the thrust bolt extending in a direction parallel to the axis of the shaft of the driven bevel gear.
3. A final drive assembly for a transaxle according to claim 2 wherein the inner end surface of the thrust bolt forms a limit end, and a gap having a width h is formed between the limit end and the mating surface, wherein h is 0.6mm or more and 1.3mm or less.
4. A final drive assembly for a transaxle according to claim 3 wherein the width h is 0.9mm.
5. A final drive assembly for a transaxle according to claim 3 wherein the inboard end surface of the thrust bolt is an arcuate surface having a central portion projecting toward the mating surface.
6. A final drive assembly for a transaxle according to claim 2 wherein a locknut is threadedly engaged with a portion of the thrust bolt located outside the side wall of the housing, the locknut abutting against an outer surface of the side wall of the housing.
7. The final drive assembly of a transaxle of claim 2 wherein the thrust bolt has a central axis perpendicular to and in the same plane as a central axis of the drive bevel gear.
8. Transaxle, characterized in that it comprises a final drive assembly of a transaxle according to any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221486784.XU CN218236037U (en) | 2022-06-14 | 2022-06-14 | Main reducer assembly of drive axle and drive axle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221486784.XU CN218236037U (en) | 2022-06-14 | 2022-06-14 | Main reducer assembly of drive axle and drive axle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218236037U true CN218236037U (en) | 2023-01-06 |
Family
ID=84672056
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221486784.XU Active CN218236037U (en) | 2022-06-14 | 2022-06-14 | Main reducer assembly of drive axle and drive axle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218236037U (en) |
-
2022
- 2022-06-14 CN CN202221486784.XU patent/CN218236037U/en active Active
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