CN212744976U - Reduction gear structure and car axle - Google Patents
Reduction gear structure and car axle Download PDFInfo
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- CN212744976U CN212744976U CN202021473037.3U CN202021473037U CN212744976U CN 212744976 U CN212744976 U CN 212744976U CN 202021473037 U CN202021473037 U CN 202021473037U CN 212744976 U CN212744976 U CN 212744976U
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- row tapered
- oil
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- tapered roller
- roller bearing
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Abstract
The utility model belongs to the technical field of the vehicle, a reduction gear structure and car axle is disclosed. This reduction gear structure includes: the oil inlet and the oil outlet are respectively arranged on two sides of the speed reducer shell; the gear shaft penetrates through the mounting hole; a drive bevel gear disposed in the reducer housing and connected to the gear shaft; the driven bevel gear is arranged in the speed reducer shell and meshed with the driving bevel gear; the blocking component is sleeved on the gear shaft and is sealed and blocked in the mounting hole; the double-row tapered roller bearing is arranged in the mounting hole and sleeved on the gear shaft, an oil duct is formed between the double-row tapered roller bearing and the plugging assembly, an oil hole is formed in the outer wall of the double-row tapered roller bearing along the circumferential direction of the outer wall, the oil hole is respectively communicated with the oil inlet and the oil duct, and the oil duct is communicated with the oil outlet. This reduction gear structure adopts double-row tapered roller bearing to replace two original single-row tapered roller bearings, satisfies the demand of lightweight.
Description
Technical Field
The utility model relates to the technical field of vehicles, especially, relate to a reduction gear structure and car axle.
Background
In a domestic automobile driving axle, two single-row tapered roller bearings are generally adopted to connect a driving bevel gear and a reducer shell. The axial span of the two single-row tapered roller bearings is large, so that the weight and the cost of the speed reducer shell are increased. Meanwhile, by taking the coaxiality of two bearing holes of the reducer shell, the coaxiality of two shaft diameters of the driving bevel gear, the assembly precision and other factors into consideration, the structure can influence the performance of the single-row tapered roller bearing, the service life of the bearing is reduced, and the transmission efficiency is low. In addition, the single-row tapered roller bearing has the problem of poor lubricating effect, and the transmission effect is influenced.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a reduction gear structure and car axle satisfy lightweight demand, good reliability, and is with low costs, lubricated effectual.
To achieve the purpose, the utility model adopts the following technical proposal:
a speed reducer structure comprising:
the oil inlet and the oil outlet are respectively arranged on two sides of the speed reducer shell;
a gear shaft inserted into the mounting hole;
a drive bevel gear disposed in the reducer housing and connected to the gear shaft;
the driven bevel gear is arranged in the speed reducer shell and meshed with the driving bevel gear;
the blocking component is sleeved on the gear shaft and is sealed and blocked in the mounting hole;
the double-row tapered roller bearing is arranged in the mounting hole and sleeved on the gear shaft, an oil channel is formed between the double-row tapered roller bearing and the plugging assembly, oil holes are formed in the outer wall of the double-row tapered roller bearing along the circumferential direction of the outer wall, the oil holes are respectively communicated with the oil inlet and the oil channel, and the oil channel is communicated with the oil outlet.
Preferably, the occlusion assembly comprises:
the flange is sleeved at one end, far away from the driving bevel gear, of the gear shaft and abuts against the end face of the double-row tapered roller bearing;
and the locking nut is arranged on the flange in a penetrating way and is connected to the end part of the gear shaft.
Preferably, the outer wall of the gear shaft is provided with an external spline, the inner wall of the flange is provided with an internal spline, and the external spline is clamped with the internal spline.
Preferably, the occlusion assembly further comprises:
an adjustment ring provided on the reduction gear case, the adjustment ring being capable of abutting against an end surface of the double-row tapered roller bearing;
and the oil seal is arranged in the adjusting ring and is arranged on the flange in a sealing and sealing manner.
Preferably, an annular groove is formed in one side, close to the double-row tapered roller bearing, of the adjusting ring, and the oil passage is formed between the annular groove and the double-row tapered roller bearing.
Preferably, a seal lip is provided on the inner side of the oil seal, and the seal lip is sealingly fitted to the flange.
Preferably, a fixing hole is formed in the speed reducer housing, the fixing hole is communicated with the mounting hole, the axis of the fixing hole and the axis of the mounting hole are collinear, and the fixing hole is used for mounting the adjusting ring.
Preferably, the double row tapered roller bearing includes:
the bearing outer ring is arranged in the mounting hole, and the oil hole is formed in the bearing outer ring;
a bearing inner ring disposed within the bearing outer ring;
and the double-row tapered roller is arranged between the bearing outer ring and the bearing inner ring in a rolling mode.
Preferably, the double-row tapered roller bearing further includes a spacer bush provided between two rows of tapered rollers of the double-row tapered rollers.
In order to achieve the purpose, the utility model also provides an automobile axle, including foretell reduction gear structure.
The utility model has the advantages that:
the utility model provides a reduction gear structure, through be provided with the mounting hole on retarder casing, double-row tapered roller bearing sets up in the mounting hole and the cover locates on the gear shaft, adopts double-row tapered roller bearing to replace two original single-row tapered roller bearings, constitutes reduction gear structure, has reduced the weight of reduction gear structure shell, satisfies lightweight demand. Meanwhile, the double-row tapered roller bearing integrates two single-row tapered roller bearings, is of an integral structure, cannot be influenced by the coaxiality and the assembly precision of the two single-row tapered roller bearings, improves the service performance of the bearing, prolongs the service life of the double-row tapered roller bearing and improves the transmission reliability.
In addition, the two sides of the speed reducer shell are respectively provided with the oil inlet and the oil outlet, lubricating oil entering from the oil inlet enters the double-row tapered roller bearing through the oil hole to lubricate the double-row tapered roller bearing, then the lubricating oil flows out from the oil outlet through the oil duct, so that the circulation process of the lubricating oil is completed, the lubricating effect of the double-row tapered roller bearing is good, and the rotating smoothness of the double-row tapered roller bearing is ensured. Locate on the gear shaft and sealed shutoff in the mounting hole through the shutoff subassembly cover, the shutoff subassembly has played sealed effect, avoids appearing the condition of draining.
The utility model also provides an automobile axle, including foretell reduction gear structure, improve the transmission efficiency of reduction gear, reduced energy resource consumption, reached energy-conserving purpose.
Drawings
FIG. 1 is a schematic structural diagram of a reducer structure according to the present invention;
FIG. 2 is a schematic structural view of an adjusting ring in the structure of the speed reducer according to the present invention;
fig. 3 is a schematic structural diagram of a double-row tapered roller bearing in the reducer structure of the present invention.
In the figure:
1. a reducer housing; 2. a gear shaft; 3. a drive bevel gear; 4. a driven bevel gear; 5. a plugging component; 6. a double-row tapered roller bearing;
11. an oil inlet; 12. an oil outlet;
51. a flange; 52. locking the nut; 53. an adjusting ring; 531. an annular groove; 54. oil sealing;
61. a bearing outer ring; 611. an oil hole; 62. a bearing inner ring; 63. double-row tapered rollers; 64. and (4) a spacer bush.
Detailed Description
In order to make the technical problems, technical solutions and technical effects achieved by the present invention more clear, the embodiments of the present invention will be described in further detail with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments, not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.
The embodiment provides a reduction gear structure, is applicable to car axle technical field. As shown in fig. 1, the reducer structure comprises a reducer housing 1, a gear shaft 2, a driving bevel gear 3, a driven bevel gear 4, a plugging component 5 and a double-row tapered roller bearing 6, wherein the reducer housing 1 is of a housing structure, the reducer housing 1 plays a role of integral support, and an oil inlet 11 and an oil outlet 12 are respectively arranged on two sides of the reducer housing 1; a driving bevel gear 3 and a driven bevel gear 4 are respectively arranged in the reducer shell 1, the gear shaft 2 penetrates through the mounting hole and is connected to the driving bevel gear 3, the driving bevel gear 3 is meshed with the driven bevel gear 4, and the rotation of the driving gear shaft 2 drives the driving bevel gear 3 to rotate and drives the driven bevel gear 4 to rotate. The blocking component 5 is sleeved on the gear shaft 2 and sealed and blocked in the mounting hole, and the blocking component 5 plays a role in sealing. The top of the reducer casing 1 is provided with a mounting hole, the mounting hole is used for mounting a double-row tapered roller bearing 6, the double-row tapered roller bearing 6 is arranged in the mounting hole and sleeved on the gear shaft 2, an oil channel is formed between the double-row tapered roller bearing 6 and the plugging component 5, an oil hole 611 is arranged on the outer wall of the double-row tapered roller bearing 6 along the circumferential direction of the outer wall, the oil hole 611 is respectively communicated with the oil inlet 11 and the oil channel, and the oil channel is communicated with the oil outlet 12.
The reduction gear structure that this embodiment provided, through be provided with the mounting hole on reduction gear housing 1, double-row tapered roller bearing 6 sets up in the mounting hole and the cover is located on gear shaft 2, adopts double-row tapered roller bearing 6 to replace two original single-row tapered roller bearings, constitutes the reduction gear structure, has reduced the weight of reduction gear structure shell, satisfies lightweight demand. Meanwhile, the double-row tapered roller bearing 6 integrates two single-row tapered roller bearings, the double-row tapered roller bearing 6 is of an integral structure, the influence of coaxiality and assembly precision of the two single-row tapered roller bearings is avoided, the service performance of the bearing is improved, the service life of the double-row tapered roller bearing 6 is prolonged, and therefore transmission reliability is improved.
In addition, the oil inlet 11 and the oil outlet 12 are respectively arranged on two sides of the reducer housing 1, so that the lubricating oil entering from the oil inlet 11 enters the interior of the double-row tapered roller bearing 6 through the oil hole 611 to lubricate the double-row tapered roller bearing 6, and then the lubricating oil flows out from the oil outlet 12 through the oil duct, thereby completing the circulation process of the lubricating oil, ensuring good lubricating effect of the double-row tapered roller bearing 6 and ensuring the smoothness of the rotation of the double-row tapered roller bearing 6. Locate gear shaft 2 through the cover of shutoff subassembly 5 on and sealed shutoff in the mounting hole, shutoff subassembly 5 has played sealed effect, avoids appearing the condition of draining.
Preferably, the gear shaft 2 and the driving bevel gear 3 are of an integrally formed structure, so that the links of part production and assembly are saved, and the production cost is further reduced.
In order to facilitate the installation of the double-row tapered roller bearing 6, a shoulder is convexly arranged on the inner wall of the reducer shell 1, the bottom surface of the double-row tapered roller bearing 6 is attached to the shoulder, and the shoulder is used for supporting the double-row tapered roller bearing 6.
Because the bottom of the double-row tapered roller bearing 6 is limited through the shoulder, in order to ensure the installation stability of the double-row tapered roller bearing 6, the plugging component 5 comprises a flange 51 and a locking nut 52, the cross section of the flange 51 is of a T-shaped structure, the flange 51 is sleeved at one end, away from the driving bevel gear 3, of the gear shaft 2, the flange 51 abuts against the end surface of the double-row tapered roller bearing 6, and the flange 51 plays a role in limiting the end surface of the top of the double-row tapered roller bearing 6. Under the combined action of the flange 51 and the shoulder, the top and the bottom of the double-row tapered roller bearing 6 are limited, the positioning effect is good, and the installation precision is ensured. The lock nut 52 is arranged through the flange 51 and connected to the end of the gear shaft 2, specifically, a threaded hole is arranged on the end surface of one end of the gear shaft 2 close to the flange 51 along the axial direction, a stud part of the lock nut 52 extends into the threaded hole and is in threaded connection with the threaded hole, and the lock nut 52 is used for achieving screwing and fixing, so that the purpose that the flange 51 is axially fixed along the gear shaft 2 is achieved.
Further, an outer spline is provided on an outer wall of the gear shaft 2, and an inner spline is provided on an inner wall of the flange 51, and the outer spline is engaged with the inner spline. The coupling effect between the gear shaft 2 and the flange 51 is ensured by the cooperation of the external splines and the internal splines.
Because the circulation of lubricating oil is carried out between double-row tapered roller bearing 6 and reduction gear housing 1 to lubricating oil, in order to avoid appearing the risk of oil leak, shutoff subassembly 5 still includes adjustable ring 53 and oil blanket 54, is provided with the fixed orifices on reduction gear housing 1, and the fixed orifices communicates in the mounting hole, and the axis of fixed orifices and the axis collineation of mounting hole, and the fixed orifices is used for installing adjustable ring 53. The fixing hole is preferably a threaded hole, and the adjusting ring 53 is screwed into the fixing hole and is threadedly connected thereto to ensure that the adjusting ring 53 is fixedly disposed on the reducer case 1. By adjusting the depth of the adjusting ring 53 screwed into the fixing hole, the adjusting ring 53 is abutted against the end surface of the double-row tapered roller bearing 6, and the limit of the end surface of the top of the double-row tapered roller bearing 6 is further ensured. An oil seal 54 is arranged in the adjusting ring 53, and the oil seal 54 is arranged on the flange 51 in a sealing manner, so that the sealing effect is good, and the risk of leakage of lubricating oil is reduced. Preferably, a seal lip is provided on the inner side of the oil seal 54, the seal lip being sealingly fitted to the flange 51, and by providing the seal lip, the sealability between the oil seal 54 and the flange 51 is improved.
Further, as shown in fig. 2, an annular groove 531 is provided on the adjusting ring 53 on the side close to the double row tapered roller bearing 6, and an oil passage is formed between the annular groove 531 and the double row tapered roller bearing 6. The annular groove 531 which is distributed annularly is adopted, so that the lubricating oil in the double-row tapered roller bearing 6 can flow out conveniently.
Further, as shown in fig. 3, the double row tapered roller bearing 6 includes a bearing outer ring 61, a bearing inner ring 62, and double row tapered rollers 63, the bearing outer ring 61 is disposed in the mounting hole, an oil hole 611 is disposed on the bearing outer ring 61, the oil hole 611 communicates with the oil inlet 11, the bearing inner ring 62 is disposed in the bearing outer ring 61, and the double row tapered rollers 63 are disposed between the bearing outer ring 61 and the bearing inner ring 62 in a rolling manner, wherein the double row tapered rollers 63 are two rows of tapered rollers disposed at an interval. Under the matching action of the bearing outer ring 61 and the bearing inner ring 62, the two existing single-row tapered roller bearings are integrated into one bearing, the situations of coaxiality and assembly accuracy easily occurring in the installation of the two bearings are reduced, and the using performance is good.
It should be noted that the shoulder of the reducer case 1 is used to support the bottom end face of the bearing outer ring 61, the flange 51 limits the top end face of the bearing inner ring 62, the adjusting ring 53 limits the top end face of the bearing outer ring 61, the positions of the flange 51 and the adjusting ring 53 do not conflict, and the position stability of the top end face of the double row tapered roller bearing 6 is ensured under the cooperation effect of the flange 51 and the adjusting ring 53.
Further, the double-row tapered roller bearing 6 further comprises a spacer sleeve 64, the spacer sleeve 64 is arranged between two rows of tapered rollers of the double-row tapered roller 63, and the spacer sleeve 64 is used for supporting the two rows of tapered rollers while playing a role in blocking the two rows of tapered rollers, so that the supporting effect is good, and the structural stability is good.
The embodiment also provides an automobile axle, which comprises the speed reducer structure, so that the transmission efficiency of the speed reducer is improved, the energy consumption is reduced, and the purpose of energy conservation is achieved.
In the description herein, it is to be understood that the terms "upper", "lower", "right", and the like are used in an orientation or positional relationship based on that shown in the drawings for convenience of description and simplicity of operation, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used merely for descriptive purposes and are not intended to have any special meaning.
In the description herein, references to the description of "an embodiment," "an example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.
In addition, the foregoing is only the preferred embodiment of the present invention and the technical principles applied thereto. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.
Claims (10)
1. A speed reducer structure, characterized by comprising:
the oil-saving speed reducer comprises a speed reducer shell (1), wherein a mounting hole is formed in the speed reducer shell (1), and an oil inlet (11) and an oil outlet (12) are respectively formed in two sides of the speed reducer shell (1);
a gear shaft (2) inserted into the mounting hole;
a drive bevel gear (3) disposed within the reducer case (1) and connected to the gear shaft (2);
a driven bevel gear (4) which is arranged in the reducer housing (1) and is meshed with the driving bevel gear (3);
the blocking component (5) is sleeved on the gear shaft (2) and is sealed and blocked in the mounting hole;
the double-row tapered roller bearing (6) is arranged in the mounting hole and sleeved on the gear shaft (2), an oil channel is formed between the double-row tapered roller bearing (6) and the blocking assembly (5), an oil hole (611) is formed in the outer wall of the double-row tapered roller bearing (6) along the circumferential direction of the outer wall, the oil hole (611) is communicated with the oil inlet (11) and the oil channel respectively, and the oil channel is communicated with the oil outlet (12).
2. Retarder structure according to claim 1, characterized in that the blocking assembly (5) comprises:
the flange (51) is sleeved at one end, far away from the driving bevel gear (3), of the gear shaft (2), and the flange (51) is abutted against the end face of the double-row tapered roller bearing (6);
and a lock nut (52) which is inserted into the flange (51) and connected to an end of the gear shaft (2).
3. A reducer structure according to claim 2, wherein external splines are provided on an outer wall of the gear shaft (2), and internal splines are provided on an inner wall of the flange (51), the external splines being engaged with the internal splines.
4. A retarder construction according to claim 3, characterised in that the plugging assembly (5) further comprises:
an adjustment ring (53) that is provided on the reduction gear case (1), the adjustment ring (53) being capable of coming into contact with an end surface of the double-row tapered roller bearing (6);
and the oil seal (54) is arranged in the adjusting ring (53) and is sleeved on the flange (51) in a sealing manner.
5. A reducer structure according to claim 4, characterised in that an annular groove (531) is provided on the side of the adjusting ring (53) close to the double row tapered roller bearing (6), the annular groove (531) and the double row tapered roller bearing (6) forming the oil passage therebetween.
6. A decelerator arrangement according to claim 4, wherein a seal lip is provided on the inside of the oil seal (54), the seal lip being sealingly fitted to the flange (51).
7. A reducer structure according to claim 4, in which a fixing hole is provided in the reducer case (1), the fixing hole communicating with the mounting hole, the axis of the fixing hole and the axis of the mounting hole being collinear, the fixing hole being used for mounting the adjusting ring (53).
8. A reducer structure according to claim 1, in which the double-row tapered roller bearing (6) comprises:
a bearing outer ring (61) provided in the mounting hole, the bearing outer ring (61) being provided with the oil hole (611);
a bearing inner ring (62) disposed within the bearing outer ring (61);
double row tapered rollers (63) that are arranged to roll between the bearing outer ring (61) and the bearing inner ring (62).
9. A reducer structure according to claim 8, wherein the double row tapered roller bearing (6) further includes a spacer (64), the spacer (64) being provided between two rows of tapered rollers of the double row tapered rollers (63).
10. An automotive axle, characterized in that it comprises a retarder structure according to any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021473037.3U CN212744976U (en) | 2020-07-23 | 2020-07-23 | Reduction gear structure and car axle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021473037.3U CN212744976U (en) | 2020-07-23 | 2020-07-23 | Reduction gear structure and car axle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212744976U true CN212744976U (en) | 2021-03-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021473037.3U Active CN212744976U (en) | 2020-07-23 | 2020-07-23 | Reduction gear structure and car axle |
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| Country | Link |
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| CN (1) | CN212744976U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113525055A (en) * | 2021-08-05 | 2021-10-22 | 一汽解放汽车有限公司 | Double-motor speed reducer |
| CN114838104A (en) * | 2022-04-15 | 2022-08-02 | 一汽解放汽车有限公司 | Speed reducer assembly and automobile axle |
-
2020
- 2020-07-23 CN CN202021473037.3U patent/CN212744976U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113525055A (en) * | 2021-08-05 | 2021-10-22 | 一汽解放汽车有限公司 | Double-motor speed reducer |
| CN113525055B (en) * | 2021-08-05 | 2022-05-13 | 一汽解放汽车有限公司 | Double-motor speed reducer |
| CN114838104A (en) * | 2022-04-15 | 2022-08-02 | 一汽解放汽车有限公司 | Speed reducer assembly and automobile axle |
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