CN216200212U - Hub reduction mechanism and automobile - Google Patents
Hub reduction mechanism and automobile Download PDFInfo
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- CN216200212U CN216200212U CN202122739978.8U CN202122739978U CN216200212U CN 216200212 U CN216200212 U CN 216200212U CN 202122739978 U CN202122739978 U CN 202122739978U CN 216200212 U CN216200212 U CN 216200212U
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Abstract
The utility model discloses a hub reduction mechanism and an automobile, and belongs to the technical field of automobiles. The hub reduction mechanism comprises a half shaft and a hub; the planetary reduction assembly comprises a sun wheel shaft and a planetary assembly, the sun wheel shaft is coaxially connected with the half shaft, a sun wheel is arranged on the sun wheel shaft, the sun wheel is in transmission connection with the planetary assembly, and the planetary assembly is fixedly connected with the hub; and the sleeve is sleeved and connected to the outer side of the sun wheel shaft and the outer side of the half shaft in a spline mode. Has the advantages that: the automobile speed reducer can obtain a large speed reduction ratio so as to meet the use requirement of an automobile under the working condition of needing large torque.
Description
Technical Field
The utility model relates to the technical field of automobiles, in particular to a hub reduction mechanism and an automobile.
Background
The wheel-side speed reducing mechanism of the automobile has the function of reducing the speed and increasing the torque transmitted by the high-speed motor and then transmitting the speed and the torque to the wheels of the automobile so as to ensure that the wheels generate larger driving force under the reaction of the ground adhesion. At present, a wheel reduction mechanism of an automobile mainly adopts planetary gear reduction transmission.
The half shaft of the hub reduction mechanism penetrates through and is fixed on the inner side of a sun wheel shaft of the hub reduction mechanism through a spline, so that power transmission between the half shaft and the sun wheel shaft is realized; however, the inner side of the sun gear shaft needs to accommodate the half shaft, so that the diameter of the sun gear shaft needs to be relatively large, and the sun gear shaft with the large diameter is unfavorable for the reduction ratio of the whole wheel side reduction mechanism, so that the large reduction ratio cannot be realized, and the use requirement of the automobile under the working condition of needing large torque cannot be met.
In view of the above, it is desirable to design a rim speed reduction mechanism and an automobile to solve the above problems.
SUMMERY OF THE UTILITY MODEL
One object of the present invention is to provide a hub reduction mechanism, which can obtain a larger reduction ratio to meet the use requirement of an automobile under the working condition of requiring large torque.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a hub reduction mechanism comprising:
half shaft and hub;
the planetary reduction assembly comprises a sun wheel shaft and a planetary assembly, the sun wheel shaft is coaxially connected with the half shaft, a sun wheel is arranged on the sun wheel shaft, the sun wheel is in transmission connection with the planetary assembly, and the planetary assembly is fixedly connected with the hub;
and the sleeve is sleeved and connected to the outer side of the sun wheel shaft and the outer side of the half shaft in a spline mode.
Further, a first connecting bolt penetrates through the position between the sun wheel shaft and the half shaft along the axis of the sun wheel shaft, so that the sun wheel shaft and the half shaft are axially connected.
Further, an internal spline is arranged in the sleeve and used for being connected to the outer side of the sun gear shaft and the outer side of the half shaft.
Further, the planetary assembly includes:
the planet wheel shaft is parallel to the sun wheel shaft, the planet wheel is sleeved on the planet wheel shaft and is in meshing transmission with the sun wheel, the planet wheel shaft is arranged on the planet wheel carrier in an interference manner, and the planet carrier is fixedly connected with the wheel hub so that the sun wheel drives the planet wheel to rotate to drive the planet wheel shaft to rotate, the planet carrier rotates, and the wheel hub rotates.
Further, the hub reduction mechanism further includes:
the planet carrier comprises a shell body and an end cover, wherein the shell body, the planet carrier and the end cover are integrally cast and formed.
Further, the hub reduction mechanism further includes:
and the cylindrical pin penetrates through the planet carrier and the planet wheel shaft along the direction vertical to the planet wheel shaft.
Further, a sealing ring is arranged between the planet wheel shaft and the planet carrier.
Further, the hub reduction mechanism further includes:
ring gear support and ring gear, ring gear splined connection to on the ring gear support, the ring gear cover is established the periphery of planet wheel, just the planet wheel with the internal tooth of ring gear meshes mutually.
Further, the hub reduction mechanism further includes:
the spindle nose, its fixed connection is in the stopper of car, the spindle nose cover is established the outside of semi-axis, the sleeve is located the inboard of spindle nose, just the spindle nose with ring gear support splined connection, just the overhead to the part screw thread that extends in the ring gear support outside is provided with lock nut, lock nut supports and presses extremely the terminal surface of ring gear support, it is right with the spindle nose with ring gear support axial is spacing.
Another object of the present invention is to provide an automobile, which can obtain a larger reduction ratio to meet the use requirement of the automobile under the working condition that a large torque is required.
In order to achieve the purpose, the utility model adopts the following technical scheme:
an automobile comprises a wheel and the hub reduction mechanism, wherein the wheel is connected with the hub of the hub reduction mechanism.
The utility model has the beneficial effects that:
the sun wheel shaft and the half shaft are axially limited by coaxially connecting the sun wheel shaft and the half shaft; the sun wheel on the sun wheel shaft is in transmission connection with the planet component, and the planet component is in splined connection with the wheel hub; meanwhile, the sleeve is sleeved and fixed to the outer side of the sun wheel shaft and the outer side of the half shaft, so that the power of the automobile is transmitted to the sun wheel shaft from the half shaft through the sleeve, then the sun wheel shaft is transmitted to the sun wheel, then the power is transmitted to the planetary assembly from the sun wheel, finally the power is transmitted to the wheel hub through the planetary assembly, and then the power is output to the wheel of the automobile from the wheel hub, so that the speed reduction and torque increase functions of the wheel side speed reduction mechanism are realized; the sleeve is fixed on the outer side of the sun wheel shaft and the outer side of the half shaft, so that the power transmission between the half shaft and the sun wheel shaft is realized; compared with the inner side of the sun gear shaft which is penetrated by the half shaft and fixed through the spline in the prior art, the inner side of the sun gear shaft does not need to accommodate the half shaft, the diameter of the sun gear shaft is not limited, the diameter of the sun gear shaft can be relatively smaller according to actual use working conditions, a larger reduction ratio is realized, and the use requirement of an automobile under the working condition of large torque can be met.
Drawings
FIG. 1 is a schematic structural view of a hub reduction mechanism provided in the present invention;
FIG. 2 is an enlarged partial schematic view at A of FIG. 1;
fig. 3 is a schematic structural view of a ring gear and a ring gear support provided by the present invention.
Reference numerals:
1-a half shaft; 2-a shaft head; 31-a planet carrier; 32-planet wheel shaft; 33-planet wheels; 34-a second wear block; 35-sun gear shaft; 36-cylindrical pin; 37-a sealing ring; 38-a third bearing; 39-a sleeve; 41-a gear ring; 42-a ring gear support; 43-a locking nut; 5-a hub; 61-a first bearing; 62-a second bearing; 7-a brake; 81-first connecting bolt; 82-a second connecting bolt; 83-third connecting bolt; 9-first wear resistant block.
Detailed Description
All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.
Any feature disclosed in this specification may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features. Like reference numerals refer to like elements throughout the specification.
In order to make the technical problems solved, the technical solutions adopted and the technical effects achieved by the present invention clearer, the technical solutions of the present invention are further described below by way of specific embodiments with reference to the accompanying drawings.
The embodiment provides a hub reduction mechanism and an automobile comprising the hub reduction mechanism. Specifically, the automobile further comprises wheels, and the wheel side speed reducing mechanism is connected with the wheels so as to output power after the speed reduction and torque increase of the wheel side speed reducing mechanism to the wheels, so that the use requirement of the automobile under the working condition of large torque can be met.
Specifically, as shown in fig. 1-3, the hub reduction mechanism includes axle shaft 1, hub 5, a planetary reduction assembly, and sleeve 39. The planetary reduction assembly comprises a sun gear shaft 35 and a planetary assembly, the sun gear shaft 35 is coaxially connected with the half shaft 1, a sun gear is arranged on the sun gear shaft 35 and is in transmission connection with the planetary assembly, and the planetary assembly is fixedly connected with the hub 5; the sleeve 39 is fitted over and spline-connected to the outer side of the sun gear shaft 35 and the outer side of the axle shaft 1, so that power transmission between the axle shaft 1 and the sun gear shaft 35 is possible.
The sun wheel shaft 35 and the half shaft 1 are axially limited by coaxially connecting the sun wheel shaft 35 and the half shaft 1; the sun gear on the sun gear shaft 35 is in transmission connection with the planet component, and the planet component is in splined connection with the hub 5; meanwhile, the sleeve 39 is sleeved and fixed on the outer side of the sun gear shaft 35 and the outer side of the half shaft 1, so that the power of the automobile is transmitted to the sun gear shaft 35 from the half shaft 1 through the sleeve 39, then the sun gear shaft 35 is transmitted to the sun gear, then the power is transmitted to the planetary assembly from the sun gear, finally the power is transmitted to the hub 5 through the planetary assembly, and then the power is output to the wheel of the automobile from the hub 5, so that the speed reduction and torque increase functions of the wheel side speed reduction mechanism are realized; the sleeve 39 is fixed on the outer side of the sun gear shaft 35 and the outer side of the half shaft 1, so that the power transmission between the half shaft 1 and the sun gear shaft 35 is realized; compared with the prior art in which the half shaft 1 is arranged in a penetrating manner and the inner side of the sun gear shaft 35 is fixed through the spline, the half shaft 1 does not need to be accommodated in the inner side of the sun gear shaft 35, and the diameter of the sun gear shaft 35 is not limited, so that the diameter of the sun gear shaft 35 can be relatively smaller according to actual use working conditions, a larger reduction ratio can be realized, and the use requirement of the automobile under the working condition of large torque requirement can be met.
Specifically, as shown in fig. 2, a first connecting bolt 81 is inserted between the sun gear shaft 35 and the axle shaft 1 along the axis of the sun gear shaft 35, and the first connecting bolt 81 sequentially passes through the sun gear shaft 35 and penetrates into the axle shaft 1, so that the axial connection between the sun gear shaft 35 and the axle shaft 1 is realized through the first connecting bolt 81.
Further, a spline for connecting to the outside of the sun gear shaft 35 and the outside of the axle shaft 1 is provided in the sleeve 39, thereby achieving the effect that the sleeve 39 is provided outside the sun gear shaft 35 and the outside of the axle shaft 1. An internal spline can be arranged in the sleeve, and the specification of the internal spline is matched with that of an external spline on the sun gear shaft and that of an external spline on the half shaft; it is also possible to provide two internal splines in the sleeve 39, one of which is connected to the outside of the sun gear shaft 35 and the other of which is connected to the outside of the axle shaft 1, so that the connection of the sleeve 39 is effected outside the sun gear shaft 35 and outside the axle shaft 1. Here, the specific number of specifications of the internal spline in the sleeve 39, the external spline on the sun gear shaft, and the external spline on the axle shaft is not limited, and the sleeve 39 may be connected to the outside of the sun gear shaft 35 and the outside of the axle shaft 1.
Specifically, as shown in fig. 2, the planetary assembly includes a planetary shaft 32, a planetary gear 33 and a planetary carrier 31, the planetary shaft 32 is parallel to a sun gear shaft 35, the planetary gear 33 is sleeved on the planetary shaft 32 and is in meshing transmission with the sun gear, the planetary shaft 32 is disposed on the planetary carrier 31 in an interference manner, and the planetary carrier 31 is fixedly connected to the hub 5, so that the sun gear drives the planetary gear 33 to rotate, so as to drive the planetary shaft 32 to rotate, so as to drive the planetary carrier 31 to rotate, so as to drive the hub 5 to rotate by the planetary carrier 31. The number of the planetary axles 32 may be multiple, the multiple planetary axles 32 are parallel and are all arranged on the periphery of the sun gear shaft 35, the number of the planetary axles 32 is not specifically limited herein, and the planetary gears 33 and the planetary axles 32 are arranged in one-to-one correspondence. The carrier 31 and the hub 5 are fixedly connected by a third connecting bolt 83.
Further, hub reduction mechanism still includes shell body and end cover, the shell body, planet carrier 31 and end cover are through integrated casting shaping each other, thereby can form integral planet carrier 31, the shell body that the components of a whole that can function independently set up among the prior art has been avoided, still need the problem of spare parts such as snap ring and gasket when end cover and planet carrier 31 assemble, with the independent spare part quantity that has reduced hub reduction mechanism, manufacturing cost and assembly process degree of difficulty have been reduced, the convenience of the dismantlement and the maintenance of hub reduction mechanism has been improved, and the integration of planet carrier 31 sets up the compact structure that has improved whole hub reduction mechanism, so that hub reduction mechanism arranges on the automobile body of car.
As shown in fig. 2, the hub reduction mechanism further includes a cylindrical pin 36, and the cylindrical pin 36 penetrates through the planet carrier 31 and the planet shaft 32 in a direction perpendicular to the planet shaft 32, so that the axial limit between the planet shaft 32 and the planet carrier 31 is realized through the cylindrical pin 36. The axial limiting is performed through the cylindrical pin 36 with a simple structure, so that the structure of the whole wheel-side speed reducing mechanism can be simpler under the condition of ensuring the limiting effect. The cylindrical pin 36 may be a solid cylindrical pin, an elastic cylindrical pin, or other different types of positioning pin structures, and is not limited in this respect.
Specifically, as shown in fig. 2, a sealing ring 37 is disposed between each planetary gear shaft 32 and the planet carrier 31, and the sealing ring 37 is embedded in a shaft hole of the planet carrier 31, so as to achieve axial sealing between the planetary gear shaft 32 and the outside, and avoid the influence of the external environment on the use of the planetary gear shaft 32.
Further, as shown in fig. 2 and fig. 3, the hub reduction mechanism further includes a ring gear support 42 and a ring gear 41, the ring gear 41 is splined to the ring gear support 42, the ring gear 41 is sleeved on the periphery of the planet gear 33, and the planet gear 33 is meshed with the internal teeth of the ring gear 41, so that the planet gear 33 rotates along the internal teeth of the ring gear 41 when rotating.
Specifically, as shown in fig. 1 and fig. 2, the wheel-side reduction mechanism further includes a spindle head 2, the spindle head 2 is connected to a brake 7 of the automobile, the spindle head 2 is sleeved outside the half shaft 1, the sleeve 39 is located inside the spindle head 2, the spindle head 2 is connected to the gear ring support 42 through a spline, a locking nut 43 is arranged on a part of threads of the spindle head 2 extending to the outside of the gear ring support 42, and the locking nut 43 abuts against and presses an end surface of the gear ring support 42 to axially limit the spindle head 2 and the gear ring support 42. Wherein the stub shaft 2 and the brake 7 are connected with other external structures of the car by means of a second connecting bolt 82. For example, other external structures may be axle housings, or steering knuckles, or non-steerable drive axles or steerable drive axles. The type of the brake 7 is not limited to a wet-type multi-disc brake, and may be a drum brake, a disc brake, or another type of brake, and is not particularly limited herein.
Further, as shown in fig. 2, the hub reduction gear further includes a first wear-resistant block 9 and a second wear-resistant block 34, the first wear-resistant block 9 is in interference fit with the spigot on the spindle head 2, and the inner side and the outer side of the sleeve 39 are respectively attached to the surfaces of the sun gear shaft 35 and the first wear-resistant block 9; the first wear-resistant block 9 is used for axially limiting the sleeve 39 relative to the shaft head 2 and can avoid abrasion between the sleeve 39 and the shaft head 2; the second wear-resistant block 34 is in interference fit in the planet carrier 31, and the second wear-resistant block 34 is used for axially limiting the position of the sun gear shaft 35 relative to the planet carrier 31 and can avoid abrasion between the sun gear shaft 35 and the planet carrier 31.
Specifically, as shown in fig. 1 and fig. 2, the hub reduction mechanism further includes a first bearing 61, a second bearing 62 and a third bearing 38, an inner ring of the first bearing 61 and an inner ring of the second bearing 62 are respectively sleeved on the outer side of the spindle head 2 and the outer side of the ring gear bracket 42, and an outer ring of the first bearing 61 and an outer ring of the second bearing 62 are both matched with the hub 5 to ensure the rotation of the hub 5; a third bearing 38 is mounted in the bore of the planet wheel 33 to ensure rotation of the planet wheel shaft 32.
The above description is only a preferred embodiment of the present invention, and for those skilled in the art, the present invention should not be limited by the description of the present invention, which should be interpreted as a limitation.
Claims (10)
1. A hub reduction mechanism, comprising:
a half shaft (1) and a hub (5);
the planetary reduction assembly comprises a sun wheel shaft (35) and a planetary assembly, the sun wheel shaft (35) is coaxially connected with the half shaft (1), a sun wheel is arranged on the sun wheel shaft (35), the sun wheel is in transmission connection with the planetary assembly, and the planetary assembly is fixedly connected with the hub (5);
a sleeve (39) which is sleeved and splined to the outside of the sun gear shaft (35) and the outside of the half shaft (1).
2. A hub reduction mechanism according to claim 1, wherein a first connecting bolt (81) is provided between the sun gear shaft (35) and the axle shaft (1) along the axis of the sun gear shaft (35) to axially connect the sun gear shaft (35) and the axle shaft (1).
3. A hub reduction mechanism according to claim 1, wherein internal splines are provided in the sleeve (39) for connection to the outside of the sun gear shaft (35) and the outside of the axle shaft (1).
4. The hub reduction mechanism of claim 1, wherein the planetary assembly comprises:
the planet carrier comprises a planet wheel shaft (32), a planet wheel (33) and a planet carrier (31), wherein the planet wheel shaft (32) and a sun wheel shaft (35) are arranged in parallel, the planet wheel (33) is sleeved on the planet wheel shaft (32) and is in meshing transmission with the sun wheel, the planet wheel shaft (32) is arranged on the planet carrier (31) in an interference manner, and the planet carrier (31) is fixedly connected with the hub (5) so that the sun wheel drives the planet wheel (33) to rotate to drive the planet wheel shaft (32) to rotate, the planet carrier (31) is rotated, and the hub (5) is rotated.
5. The hub reduction mechanism according to claim 4, further comprising:
the planet carrier comprises an outer shell and end covers, wherein the outer shell, the planet carrier (31) and the end covers are integrally cast and formed.
6. The hub reduction mechanism according to claim 4, further comprising:
a cylindrical pin (36), wherein the cylindrical pin (36) penetrates through the planet carrier (31) and the planet shaft (32) along the direction perpendicular to the planet shaft (32).
7. A hub reduction mechanism according to claim 4, characterized in that a sealing ring (37) is provided between the planet wheel shaft (32) and the planet carrier (31).
8. The hub reduction mechanism according to claim 4, further comprising:
ring gear support (42) and ring gear (41), ring gear (41) splined connection to on ring gear support (42), ring gear (41) cover is established the periphery of planet wheel (33), just planet wheel (33) with the internal tooth of ring gear (41) meshes mutually.
9. The hub reduction mechanism according to claim 8, further comprising:
spindle nose (2), its fixed connection is in stopper (7) of car, spindle nose (2) cover is established the outside of semi-axis (1), sleeve (39) are located the inboard of spindle nose (2), just spindle nose (2) with ring gear support (42) splined connection, just spindle nose (2) are gone up to the partial screw thread that extends in the ring gear support (42) outside is provided with lock nut (43), lock nut (43) support and press extremely the terminal surface of ring gear support (42), it is right spindle nose (2) with ring gear support (42) axial is spacing.
10. A motor vehicle, characterized by comprising a wheel and a hub reduction mechanism according to any one of claims 1-9, the wheel being connected to the hub (5) of the hub reduction mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122739978.8U CN216200212U (en) | 2021-11-10 | 2021-11-10 | Hub reduction mechanism and automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122739978.8U CN216200212U (en) | 2021-11-10 | 2021-11-10 | Hub reduction mechanism and automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216200212U true CN216200212U (en) | 2022-04-05 |
Family
ID=80907920
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122739978.8U Active CN216200212U (en) | 2021-11-10 | 2021-11-10 | Hub reduction mechanism and automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216200212U (en) |
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2021
- 2021-11-10 CN CN202122739978.8U patent/CN216200212U/en active Active
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