CN210240504U - Hub reduction gear assembly and shell sealing structure - Google Patents
Hub reduction gear assembly and shell sealing structure Download PDFInfo
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- CN210240504U CN210240504U CN201920911223.1U CN201920911223U CN210240504U CN 210240504 U CN210240504 U CN 210240504U CN 201920911223 U CN201920911223 U CN 201920911223U CN 210240504 U CN210240504 U CN 210240504U
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Abstract
The utility model discloses a wheel reduction assembly and casing seal structure. The shell sealing structure of the hub reduction gear comprises an outer shell, an inner shell, a first sealing ring, a second sealing ring and an annular cover plate, wherein the outer shell is provided with a port, and the outer shell is rotatably sleeved outside the inner shell from the port; the first sealing ring is fixedly sleeved on the outer side of the end where the port of the shell is located, and the second sealing ring is movably sleeved on the outer side of the end where the port of the shell is located; the outer ring end of the annular cover plate is fixed on the annular convex part and is in sealing butt joint with one side, facing the second sealing ring, of the first sealing ring, and the side, facing the first sealing ring, of the second sealing ring is pressed. This application is through being equipped with first sealing washer and second sealing washer between shell and inner shell, and sealed effect is better, carries out the butt through annular cover plate to first sealing washer and second sealing washer, guarantees that the inside and outside seal is tight reliable.
Description
Technical Field
The utility model relates to a vehicle reduction gear technical field, concretely relates to wheel reduction assembly and shell seal structure.
Background
The wheel is connected with the hub motor through the hub reduction gear, and the hub reduction gear reduces the speed and increases the torque of the output power of the hub motor to obtain larger driving force to drive the wheel. The common wheel side driving mode is divided into a direct driving mode and a speed reduction driving mode, wherein the direct driving mode is firstly adopted, namely, a wheel hub motor directly drives a wheel (an outer rotor motor), the direct driving mode has the advantages of compact structure, small axial size and the like, but large current is needed when large torque is borne in starting or climbing and the like, batteries and permanent magnets are easily damaged, the efficiency is sharply reduced after the load current exceeds a certain value due to the fact that the peak area of the motor efficiency is small, the outer rotor wheel hub motor is low in rotating speed, large in torque requirement and high in cost, and therefore the driving mode is suitable for occasions such as flat roads and light loads. The speed reduction driving is realized, namely, the structure of the wheel reduction gear is added, the scheme uses the inner rotor motor, the high cost of the outer rotor hub motor is reduced, the starting and climbing performances of the vehicle are greatly improved, the acceleration performance is excellent, the off-road capability is strong, and particularly, the military off-road vehicle needs to ensure that the wading working condition is not problematic, so that the sealing reliability of the wheel reduction gear has high requirements.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model discloses a main aim at provides a wheel reduction assembly and shell seal structure, aims at improving the reliability of current wheel reduction's sealed effect.
In order to achieve the above object, the utility model provides a shell sealing structure of hub reduction gear, include:
the outer shell is provided with a port and is rotatably sleeved outside the inner shell, one end of the inner shell is exposed out of the port of the outer shell, an annular butt joint body extends from the exposed part along the radial direction of a rotating shaft of the outer shell, the annular butt joint body protrudes out of the outer shell in the radial direction, and an annular convex part matched with the outer shell is convexly arranged on the inner side of the protruding part;
the first sealing ring is fixedly sleeved on the outer side of the end where the port of the shell is located, the second sealing ring is movably sleeved on the outer side of the end where the port of the shell is located and located on one side, facing the annular butt joint body, of the first sealing ring, and the second sealing ring is located in a region between the annular convex portion and the outer side of the end where the port of the shell is located; and the number of the first and second groups,
the annular cover plate, the outer annular end of annular cover plate is fixed in annular convex part, the inner ring end of annular cover plate stretches into first sealing washer with region between the second sealing washer, with first sealing washer orientation the sealed butt in one side of second sealing washer, and suppression the second sealing washer orientation one side of first sealing washer, with will the second sealing washer is spacing fixed extremely the annular is to the body.
Optionally, the outer ring end of the annular cover plate is fixed to the annular protrusion through a bolt, and the inner ring end of the annular cover plate and the end of the port of the housing are radially spaced.
Optionally, the first sealing ring includes an annular portion sleeved outside the housing, and a sealing abutting portion extending from the annular portion toward the second sealing ring, and the sealing abutting portion abuts against the annular cover plate.
Optionally, the sealing abutting part is obliquely extended from the inner ring part of the annular part to the outer ring part.
Optionally, the second sealing ring is provided with an annular groove on one side facing the annular abutting body, an inner annular surface of the second sealing ring is provided with at least one annular protrusion, and the annular protrusion is in sealing abutment with the housing.
Optionally, the annular cover plate is integrally provided with the inner shell.
Optionally, the annular cover plate is made of metal; and/or the presence of a gas in the gas,
the first sealing ring and the second sealing ring are made of rubber.
The application also provides a hub reduction gear assembly, includes:
the shell sealing structure of the hub reduction gear comprises:
the outer shell is provided with a port and is rotatably sleeved outside the inner shell, one end of the inner shell is exposed out of the port of the outer shell, an annular butt joint body extends from the exposed part along the radial direction of a rotating shaft of the outer shell, the annular butt joint body protrudes out of the outer shell in the radial direction, and an annular convex part matched with the outer shell is convexly arranged on the inner side of the protruding part;
the first sealing ring is fixedly sleeved on the outer side of the end where the port of the shell is located, the second sealing ring is movably sleeved on the outer side of the end where the port of the shell is located and located on one side, facing the annular butt joint body, of the first sealing ring, and the second sealing ring is located in an area between the annular convex part and the shell; and the number of the first and second groups,
the outer ring end of the annular cover plate is fixed on the annular convex part, and the inner ring end of the annular cover plate extends into the area between the first sealing ring and the second sealing ring so as to be in sealing butt joint with one side of the first sealing ring facing the second sealing ring and press one side of the second sealing ring facing the first sealing ring, so that the second sealing ring is limited and fixed to the annular butt joint body; and the number of the first and second groups,
the planet wheel structure is accommodated in the inner shell.
Optionally, the planetary wheel structure includes a planetary wheel carrier, a spline housing, a sun wheel, and a plurality of planetary wheels, where the spline housing is used to connect to the in-wheel motor, the sun wheel is sleeved on the spline housing, the planetary wheel carrier is provided with a plurality of flexible shafts corresponding to the plurality of planetary wheels, each planetary wheel is respectively sleeved on each corresponding flexible shaft, and the sun wheel is respectively engaged with the plurality of planetary wheels.
Optionally, the flexible shaft comprises a planetary wheel shaft and a planetary wheel shaft sleeve, and the planetary wheel shaft sleeve is sleeved outside the planetary wheel shaft and clamped on the planetary wheel; and/or the presence of a gas in the gas,
still the cover is established outside the shell and is installed the brake disc, the brake disc with the shell is for dismantling the connection.
The utility model provides an among the technical scheme, through be equipped with first sealing washer and second sealing washer between the port between shell and inner shell to seal the port to shell and inner shell, and be equipped with the annular cover board, make annular cover board and first sealing washer and second sealing washer looks butt, the annular cover board with first sealing washer looks butt is in order to prevent that external water and earth from getting into the casing, the annular cover board with second sealing washer looks butt removes in order to restrict the second sealing washer, and can prevent that inside oil from revealing away, is equipped with two layers of sealing members, makes sealed effect better, and can guarantee that the inside and outside seal is tight reliable.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an embodiment of a wheel hub reduction gear assembly provided in the present invention;
FIG. 2 is a partially enlarged structural schematic view of a housing seal structure of the hub reduction gear of FIG. 1;
fig. 3 is a schematic structural view of the flexible shaft shown in fig. 1.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 11 | |
32 | |
| 12 | Inner shell | 4 | |
| 21 | |
51 | |
| 22 | |
52 | |
| 3 | Annular cover plate | 53 | |
| 31 | |
54 | Planet wheel axle sleeve |
The object of the present invention is to provide a novel and advantageous solution for the above mentioned problems.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that, if the present invention relates to a directional indication, the directional indication is only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture, and if the specific posture is changed, the directional indication is changed accordingly.
In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout includes three juxtapositions, exemplified by "A and/or B" including either A or B or both A and B. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
The wheel is connected with the hub motor through the hub reduction gear, and the hub reduction gear reduces the speed and increases the torque of the output power of the hub motor to obtain larger driving force to drive the wheel. The common wheel side driving mode is divided into a direct driving mode and a speed reduction driving mode, wherein the direct driving mode is firstly adopted, namely, a wheel hub motor directly drives a wheel (an outer rotor motor), the direct driving mode has the advantages of compact structure, small axial size and the like, but large current is needed when large torque is borne in starting or climbing and the like, batteries and permanent magnets are easily damaged, the efficiency is sharply reduced after the load current exceeds a certain value due to the fact that the peak area of the motor efficiency is small, the outer rotor wheel hub motor is low in rotating speed, large in torque requirement and high in cost, and therefore the driving mode is suitable for occasions such as flat roads and light loads. The speed reduction driving is realized, namely, the structure of the wheel reduction gear is added, the scheme uses the inner rotor motor, the high cost of the outer rotor hub motor is reduced, the starting and climbing performances of the vehicle are greatly improved, the acceleration performance is excellent, the off-road capability is strong, and particularly, the military off-road vehicle needs to ensure that the wading working condition is not problematic, so that the sealing reliability of the wheel reduction gear has high requirements.
In view of this, the utility model provides a wheel reduction assembly and wheel reduction's shell seal structure, fig. 1 to 3 are the utility model provides an embodiment of a wheel reduction assembly.
Referring to fig. 1 to 2, in the present embodiment, the housing sealing structure of the hub reduction gear includes an outer housing 11, an inner housing 12, a first sealing ring 21, a second sealing ring 22 and an annular cover plate 3, where the outer housing 11 has a port; the outer shell 11 is rotatably sleeved outside the inner shell 12 from the port, one end of the inner shell 12 is exposed out of the port of the outer shell 11, an annular butt joint body extends from the exposed part along the radial direction of the rotating shaft of the outer shell 11, the annular butt joint body protrudes out of the outer shell 11 along the radial direction, an annular convex part matched with the outer shell 11 is convexly arranged on the inner side of the protruding part, and the outer shell 11 is connected with a vehicle hub; the first sealing ring 21 is fixedly sleeved on the outer side of the end where the port of the housing 11 is located, the second sealing ring 22 is movably sleeved on the outer side of the end where the port of the housing 11 is located in a sealing manner and is located on one side, facing the annular butt joint body, of the first sealing ring 21, and the second sealing ring 22 is located in an area between the annular convex part and the housing 11; the outer ring end of the annular cover plate 3 is fixed to the annular convex part, the inner ring end of the annular cover plate 3 extends into the area between the first sealing ring 21 and the second sealing ring 22 to be in sealing abutment with one side of the first sealing ring 21 facing the second sealing ring 22, and the side of the second sealing ring 22 facing the first sealing ring 21 is pressed to limit and fix the second sealing ring 22 to the annular abutting body; the annular cover plate 3 is abutted to the first sealing ring 21 to prevent an external ash tip and water from entering the interior, the annular cover plate 3 is abutted to the second sealing ring 22 to limit the axial displacement of the second sealing ring 22, and the second sealing ring can prevent internal oil from leaking to the exterior of the shell. It should be noted that, in this embodiment, the housing seal structure of the wheel reduction gear is mainly used with a military off-road vehicle, and it is necessary to ensure that no problem occurs in the wading condition, so that the requirement on the sealing performance is high.
The utility model provides an among the technical scheme, through being equipped with first sealing washer 21 and second sealing washer 22 between the port between shell 11 and inner shell 12 to seal the port of shell 11 and inner shell 12, and be equipped with annular cover plate 3, make annular cover plate 3 and first sealing washer 21 and second sealing washer 21 looks butt, annular cover plate 3 with first sealing washer 21 looks butt to prevent that external water and earth from getting into in the casing, annular cover plate 3 with second sealing washer 22 looks butt to restrict second sealing washer 22 and remove, and can prevent that inside oil from revealing away, be equipped with two layers of sealing members, make sealed effect better, and can guarantee that the inside and outside seals is tight reliable.
In an embodiment of the present application, the outer ring end 31 of the annular cover plate 3 is fixed to the annular protrusion by a bolt to be fixedly connected with the inner shell 12, and the inner ring end 32 of the annular cover plate 3 is radially spaced from the outer wall surface of the end of the outer shell where the port is located, so that the annular cover plate 3 does not rub against the outer shell 11 during the rotation of the outer shell 11, thereby affecting the rotation or wearing the outer shell 11. It is obvious that the annular cover plate 3 can also be connected to the inner shell 12 by other connection means, which are not described in detail herein.
In another embodiment of the present application, the annular cover plate 3 is integrally disposed with the inner shell 12, that is, the annular cover plate 3 may be a limiting rib extending from the inner shell 12.
In this application, the first sealing ring 21 includes an annular portion sleeved outside the housing and a sealing abutting portion extending from the annular portion toward the second sealing ring 22, and the sealing abutting portion abuts against the annular cover plate 3. Because the shell 11 is rotatable, the first sealing ring 11 is sleeved on the outer side of the end where the port of the shell 11 is located so as to rotate along with the shell 11, the first sealing ring 21 is in contact with the annular cover plate 3 in the rotating process, and is not in direct contact with the second sealing ring 22, so that the sealing element is abraded, and the service life of the sealing element can be prolonged.
Further, the sealing abutting part is obliquely extended from the inner ring part of the annular part to the outer ring part. Specifically, first sealing washer 21 sets up to end face seal, the cross-section be the V type setting with annular cover plate 3 looks butt is sealed to prevent inside silt or the water entering of outside.
In this embodiment, the second sealing washer is being faced one side of annular butt joint body is provided with the ring channel, the interior anchor ring of second sealing washer is provided with one at least annular arch, annular arch with the sealed butt of shell, specifically, second sealing washer 22 sets up to the skeleton oil blanket, the grease proofing side orientation of skeleton oil blanket the inner shell 12 sets up, promptly with the orientation of the port of shell 11 is unanimous, the interior anchor ring of annular convex part with the outside of the port end of shell 11 is the centre gripping the skeleton oil blanket sets up, in order to restrict the radial displacement of skeleton oil blanket, in addition annular cover plate 3 is right the skeleton oil blanket carries out radial spacing, so that the skeleton oil blanket is fixed reliable, thereby guarantees to seal tightly reliably.
In this embodiment, the annular cover plate 3 is made of metal, so that the first seal ring 21 is more smoothly and more wear-resistant when in rotational contact with the annular cover plate 3; or, the first sealing ring 21 and the second sealing ring 22 are made of rubber, so that the sealing effect is better. The two arrangements can also be implemented in combination.
The utility model provides a hub reduction gear assembly includes hub reduction gear's shell sealing structure and planet wheel 52 structure have all technical characteristics of the shell sealing structure of above-mentioned hub reduction gear, possess all technical effects that all technical characteristics produced, planet wheel structure holds and locates in shell 11.
In this embodiment, the planetary gear structure includes a planetary gear carrier 51, a spline housing, a sun gear, and a plurality of planetary gears 52, where the spline housing is used to connect with a hub motor, the sun gear is sleeved on the spline housing, the planetary gear carrier 51 is provided with a plurality of flexible shafts corresponding to the plurality of planetary gears 52, each planetary gear 52 is respectively sleeved on each corresponding flexible shaft, and the sun gear is respectively engaged with the plurality of planetary gears 52.
In the embodiment, please refer to fig. 3, the flexible shaft includes a planetary wheel shaft and a planetary wheel shaft sleeve, the planetary wheel shaft sleeve 54 is sleeved outside the planetary wheel shaft 53 and clamped on the planetary wheel 52, the planetary wheel shaft sleeve is flexibly arranged at 54, and the planetary wheel shaft 53 and the planetary wheel shaft sleeve 54 form a flexible shaft system. Meanwhile, compared with the traditional planet carrier, the flexible shaft structure has the advantage that the weight can be reduced by more than 30%.
In this embodiment, in the assembly layout of the electric wheels, the axial dimension can be flexibly adjusted. In an embodiment of the present application, a brake disc 4 is connected to the housing 11, and the brake disc 4 is detachably connected to the housing 11. The brake disc 4 can be arranged in one vehicle type, and the brake disc 4 can be eliminated in another vehicle type, so that the low-speed braking can be realized in the hub motor, the installation space can be reduced, and the space can be saved. And in a further version the brake disc 4 can be arranged inside the hub motor, also saving space.
In addition, when a general hub reduction gear is accelerated at a speed of 70km or more, squeal is likely to occur, and noise increases. The utility model discloses a measure of making an uproar falls in the multinomial, wherein the modification of gear can improve and compensate the error of processing and assembly, reduces to be nibbled in the impact of nibbling out, makes the transmission stationarity increase, reduces the running noise, the modification of planet wheel 52 includes that the tooth is to modification and profile modification and so on, combines the equal load system of flexible axle, and the noise reduction effect is better to can thoroughly solve the problem of squeaking with higher speed.
The above only is the preferred embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures made by the contents of the specification and the drawings or directly or indirectly applied to other related technical fields are included in the same way in the protection scope of the present invention.
Claims (10)
1. A shell sealing structure of a hub reduction gear is characterized by comprising:
the outer shell is provided with a port and is rotatably sleeved outside the inner shell, one end of the inner shell is exposed out of the port of the outer shell, an annular butt joint body extends from the exposed part along the radial direction of a rotating shaft of the outer shell, the annular butt joint body protrudes out of the outer shell in the radial direction, and an annular convex part matched with the outer shell is convexly arranged on the inner side of the protruding part;
the first sealing ring is fixedly sleeved on the outer side of the end where the port of the shell is located, the second sealing ring is movably sleeved on the outer side of the end where the port of the shell is located and located on one side, facing the annular butt joint body, of the first sealing ring, and the second sealing ring is located in a region between the annular convex portion and the outer side of the end where the port of the shell is located; and the number of the first and second groups,
the annular cover plate, the outer annular end of annular cover plate is fixed in annular convex part, the inner ring end of annular cover plate stretches into first sealing washer with region between the second sealing washer, with first sealing washer orientation the sealed butt in one side of second sealing washer, and suppression the second sealing washer orientation one side of first sealing washer, with will the second sealing washer is spacing fixed extremely the annular is to the body.
2. The housing seal structure of a hub reduction gear according to claim 1, wherein an outer ring end of the annular cover plate is fixed to the annular boss portion by a bolt, and an inner ring end of the annular cover plate is disposed at a radial interval from an outer wall surface of an end of the housing where the port is located.
3. The housing seal structure of a hub reduction gear according to claim 2, wherein the first seal ring includes an annular portion that is fitted outside the housing, and a seal abutting portion that extends from the annular portion in a direction toward the second seal ring, the seal abutting portion abutting against the annular cover plate.
4. The seal structure of a housing of a wheel hub reduction gear according to claim 3, wherein the seal abutting portion is provided extending obliquely from an inner ring portion of the annular portion toward an outer ring portion.
5. The sealing structure for the casing of the hub reduction gear according to claim 2, wherein the second sealing ring is provided with an annular groove on a side facing the annular abutting body, and an inner annular surface of the second sealing ring is provided with at least one annular protrusion, and the annular protrusion is in sealing abutment with the casing.
6. The seal structure of a case of a hub reduction gear according to claim 1, wherein the annular cover plate is provided integrally with the inner case.
7. The sealing structure of the casing of the wheel hub reduction gear according to claim 1, characterized in that the material of the annular cover plate is provided as metal; and/or the presence of a gas in the gas,
the first sealing ring and the second sealing ring are made of rubber.
8. A hub reduction gear assembly, comprising:
a housing seal structure of a wheel reduction unit according to any one of claims 1 to 7; and the planet wheel structure is accommodated in the shell.
9. The hub reduction gear assembly of claim 8, wherein the planetary gear structure comprises a planetary gear carrier, a spline housing, a plurality of planet gears, a sun gear, and a plurality of planet gears, the spline housing is used for connecting with an in-wheel motor, the sun gear is sleeved on the spline housing, the planetary gear carrier is provided with a plurality of flexible shafts corresponding to the planet gears, each planet gear is sleeved on each corresponding flexible shaft, and the sun gear is meshed with the planet gears.
10. The hub reduction gear assembly of claim 9, wherein the flexible shaft comprises a planet wheel shaft and a planet wheel shaft sleeve, and the planet wheel shaft sleeve is sleeved outside the planet wheel shaft and clamped on the planet wheel; and/or the presence of a gas in the gas,
still the cover is established outside the shell and is installed the brake disc, the brake disc with the shell is for dismantling the connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920911223.1U CN210240504U (en) | 2019-06-17 | 2019-06-17 | Hub reduction gear assembly and shell sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920911223.1U CN210240504U (en) | 2019-06-17 | 2019-06-17 | Hub reduction gear assembly and shell sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210240504U true CN210240504U (en) | 2020-04-03 |
Family
ID=69986121
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920911223.1U Active CN210240504U (en) | 2019-06-17 | 2019-06-17 | Hub reduction gear assembly and shell sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210240504U (en) |
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2019
- 2019-06-17 CN CN201920911223.1U patent/CN210240504U/en active Active
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