CN214688843U - Hub end cover assembly capable of adjusting air pressure in hub cavity - Google Patents
Hub end cover assembly capable of adjusting air pressure in hub cavity Download PDFInfo
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- CN214688843U CN214688843U CN202120554859.2U CN202120554859U CN214688843U CN 214688843 U CN214688843 U CN 214688843U CN 202120554859 U CN202120554859 U CN 202120554859U CN 214688843 U CN214688843 U CN 214688843U
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Abstract
The utility model provides a hub end cover assembly capable of adjusting the air pressure in a hub cavity, which can adjust the air pressure in the hub cavity in real time and observe the state of lubricating oil in the hub in real time, and comprises a hub end cover body, a transparent cover plate and a breather plug component; the hub end cover body is of a barrel-shaped structure, a first through hole is formed in the center of the bottom of the hub end cover body, and a plurality of second through holes are formed in the periphery of the first through hole; the transparent cover plate is arranged at the bottom in the hub end cover body, and an oil return hole is formed in the transparent cover plate and used for communicating the hub cavity with the central through hole of the hub end cover; the breather plug assembly comprises a breather plug body, an oil-resistant vulcanized rubber plate and a baffle plate, wherein a through hole is formed in the breather plug body, the oil-resistant vulcanized rubber plate is arranged in the center of the through hole in the breather plug body, a breather hole is formed in the center of the oil-resistant vulcanized rubber plate, and a plurality of vent holes are formed in the side wall of the section of the breather plug body between the baffle plate and the oil-resistant vulcanized rubber plate.
Description
Technical Field
The utility model relates to a vehicle oil lubrication wheel end technical field specifically is a wheel hub end cover assembly of atmospheric pressure in the adjustable wheel hub intracavity.
Background
The lubrication mode of the wheel end has two types of grease lubrication and oil lubrication, and the oil lubrication wheel end can remarkably prolong the service life of the bearing due to more sufficient lubrication, so that the oil lubrication wheel end is widely applied. For the oil lubrication wheel end, it is an important technical problem to maintain the pressure in the hub cavity of the oil lubrication wheel within a certain range and to observe the state of the lubricating oil in the hub.
In the prior art, two structures of installing a breather valve or a rubber vent plug on a hub end cover are used for adjusting the air pressure in a hub cavity, but the two structures have respective defects. The breather valve has a complex structure, occupies a large space at the wheel end, and has high cost. The rubber vent plug is easy to block, and external muddy water, dust and the like have risks of entering the hub cavity from the rubber vent plug.
The lubricating oil in the wheel hub cavity is observed mainly through the installation transparent window in the prior art, but most of wheel hub end covers are complicated in structure after being installed with the transparent window, and the cost is increased.
SUMMERY OF THE UTILITY MODEL
The utility model provides a novel structure's wheel hub end cover assembly can adjust in real time to wheel hub intracavity gas pressure, can the state of lubricating oil in the real-time observation wheel hub simultaneously.
The technical scheme of the utility model lies in: the device comprises a hub end cover body, a transparent cover plate and a breather plug assembly;
the hub end cover body is of a barrel-shaped structure, a first through hole is formed in the center of the bottom of the hub end cover body, and a plurality of second through holes are formed in the periphery of the first through hole;
the transparent cover plate is arranged at the bottom in the hub end cover body, and an oil return hole is formed in the transparent cover plate and used for communicating the hub cavity with the central through hole of the hub end cover;
the breather plug assembly comprises a breather plug body, an oil-resistant vulcanized rubber plate and a baffle plate, wherein a through hole is formed in the breather plug body, the oil-resistant vulcanized rubber plate is arranged in the center of the through hole in the breather plug body and is divided into two sections of cavities, and a breather hole is formed in the center of the oil-resistant vulcanized rubber plate and is communicated with the two sections of cavities, one end of the breather plug body is connected with a first through hole in the center of the bottom of a hub end cover body, the other end of the breather plug body is provided with the baffle plate, and a plurality of air holes are formed in the side wall of the section of the breather plug body between the baffle plate and the oil-resistant vulcanized rubber plate and are communicated with the atmosphere through hole in the breather plug body.
Preferably as above-mentioned scheme, the port department that lies in this body of wheel hub end cover on the first through-hole is equipped with annular boss, with wheel hub end cover body formula structure as an organic whole, the circular recess has been seted up with a terminal surface central authorities of the interior bottom surface laminating of wheel hub end cover on the transparent cover plate, annular boss excircle and circular recess cooperation, and have the interval between annular boss terminal surface and the circular recess bottom, circular recess lateral wall is located to the oil gallery on the transparent cover plate, and lies in the interval department between annular boss terminal surface and the circular recess bottom.
Preferably, the outer circle of the transparent cover plate is attached to the inner side wall of the hub end cover body, the side wall of the circular groove is attached to the outer circle of the annular boss, the outer circle of the transparent cover plate and the inner side wall of the circular groove are respectively provided with an annular groove, and an O-shaped sealing ring is arranged in the annular groove.
Preferably, an oil level upper limit scale mark and an oil level lower limit scale mark are arranged on one end face of the transparent cover plate, are annular scale marks and are coaxial with the circular groove, and the oil level lower limit scale mark is located outside the oil level upper limit scale mark.
Preferably, the inner side wall of the hub end cover body is provided with an annular groove, a clamp spring is arranged in the annular groove, and the upper end face of the clamp spring is matched with the end face of the transparent cover plate and used for limiting and supporting the transparent cover plate.
Preferably, as above-mentioned scheme, first through-hole is the screw hole, breathe stopper body and first through-hole threaded connection, resistant oily vulcanized rubber board and breathe stopper body bonding are fixed, baffle and breathe stopper body pass through riveting mode fixed connection, the second through-hole is the through-hole of fan-shaped structure, along circumferencial direction evenly distributed in wheel hub end cover body bottom, and can observe oil level upper limit scale mark and oil level lower limit scale mark simultaneously by arbitrary one second through-hole.
Preferably, the side wall of the hub end cover body is provided with a threaded through hole, a plug screw is arranged in the threaded through hole, and an O-shaped sealing ring is arranged between the side wall of the threaded through hole and the plug screw.
The beneficial effect of this hair lies in:
1. the wheel hub end cover assembly of above-mentioned structure overall structure is simple, and part occupation space is little, and low in manufacturing cost for air vent, breather hole and the oil gallery that carry out the atmospheric pressure and adjust are difficult for blockking up, have effectively solved the problem of carrying out real-time regulation to wheel hub intracavity air pressure, prevent that outside muddy water and dust etc. from getting into the wheel hub intracavity, improve the life of wheel hub end cover assembly.
2. The transparent cover plate is arranged on the hub end cover assembly, the second through hole forms a transparent window in the structure, the structure is simple, the manufacturing cost is low, the practicability is high, and the observation of the state of the lubricating oil in the hub cavity can be effectively realized.
3. The side wall of the end cover of the hub is provided with the screw plug, so that the functions of oil injection and oil drainage in the cavity of the hub are facilitated, and the operation is more convenient.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a sectional view of the internal structure of the present invention.
Detailed Description
Embodiments of the present invention are described in detail below with reference to the accompanying drawings.
As shown in fig. 1 and fig. 2, the structure of the present embodiment includes a hub end cover body 1, a transparent cover plate 10 and a breather plug assembly 2;
the hub end cover body 1 is of a barrel-shaped structure, a first through hole 12 is formed in the center of the bottom of the hub end cover body, and a plurality of second through holes 3 are formed in the periphery of the first through hole 12;
the transparent cover plate 10 is arranged at the bottom in the hub end cover body 1, and an oil return hole 11 is formed in the transparent cover plate 10 and used for communicating the internal space (a hub cavity 20) of the hub end cover body 1 with a first through hole in the center of the hub end cover;
In this embodiment, the port department that lies in wheel hub end cover body 1 on the first through-hole 12 is equipped with annular boss 14, with 1 formula structure as an organic whole of wheel hub end cover body, round groove 13 has been seted up with a terminal surface central authorities of the interior bottom surface laminating of wheel hub end cover on the transparent cover plate 10, 14 excircles of annular boss and the cooperation of round groove 13, and have the interval between 14 terminal surfaces of annular boss and round groove 13 bottom, circular groove 13 lateral walls is located to oil gallery 11 on the transparent cover plate 10, and is located the interval department between annular boss terminal surface and round groove 13 bottom.
In this embodiment, the excircle of transparent cover plate 10 and the laminating of 1 inside wall of wheel hub end cover body, the laminating of circular recess 13 lateral wall and annular boss excircle, and the excircle of transparent cover plate 10 and the circular recess 13 inside wall have seted up the annular groove respectively, be equipped with O type sealing washer 19 in the annular groove.
In the present embodiment, an end face of the transparent cover plate 10 is provided with an oil level upper limit scale 15 and an oil level lower limit scale 16, both of which are annular scales, coaxial with the circular groove 13, and the oil level lower limit scale 16 is located outside the oil level upper limit scale 15.
In this embodiment, 1 inside wall of wheel hub end cover body is equipped with the annular groove, be equipped with jump ring 17 in the annular groove, jump ring 17 up end and the cooperation of transparent cover plate 10 terminal surface for spacing and support transparent cover plate.
In this embodiment, first through-hole 12 is the screw hole, breathe stopper body 8 and first through-hole 12 threaded connection, resistant oily vulcanized rubber board 4 bonds fixedly with breathing stopper body 8, baffle 5 passes through riveting mode fixed connection with breathing stopper body 8, second through-hole 3 is the through-hole of fan-shaped structure, along circumferencial direction evenly distributed in 1 bottom of wheel hub end cover body, and can observe oil level upper limit scale mark 15 and oil level lower limit scale mark 16 by arbitrary one second through-hole 3 simultaneously, as shown in fig. 2.
In this embodiment, a threaded through hole is opened on the side wall of the hub end cover body 1, a plug screw 18 is arranged in the threaded through hole, and an O-shaped sealing ring 19 is arranged between the side wall of the threaded through hole and the plug screw 18.
The working principle of the structure is as follows:
in practical use, the knuckle, the hub cap assembly and the oil seal together form a hub cavity 20, and the bearing installed in the hub cavity 20 rotates at a high speed during the operation of the vehicle, resulting in a high temperature and air pressure in the hub cavity 20. High-pressure air enters the first cavity 9 from the hub cavity 20 through the oil return hole 11 (the first cavity 9 is a cavity between the oil-resistant vulcanized rubber plate 4 and the transparent cover plate 10 in the breather plug body 8), when the air pressure in the first cavity 9 reaches a certain pressure, the high-pressure air in the first cavity 9 pushes the breather hole 21 in the oil-resistant vulcanized rubber plate 4 open, so that air enters the second cavity 6 (the second cavity 6 is a cavity between the oil-resistant vulcanized rubber plate 4 and the baffle plate 5 in the breather plug body 8), and then is discharged into the atmosphere through the vent hole 7 in the side wall of the second cavity 6. Thereby enabling real-time adjustment of the air pressure within the hub cavity 20.
Simultaneously, baffle 5 on transparent cover plate 10 and the breathing plug body 8 presss from both sides resistant oily vulcanized rubber board 4 in the centre, forms hamburg formula multilayer structure, has also realized the protection to resistant oily vulcanized rubber board 4.
The oil return hole 11 on the side wall of the circular groove 13 of the transparent cover plate 10 can enable liquid lubricating oil entering the first cavity 9 to flow back into the hub cavity 20. Transparent cover plate 10 can effectively avoid lubricating oil and high-pressure gas direct contact resistant oily vulcanized rubber board 4 and breather 21, baffle 5 can effectively avoid resistant oily vulcanized rubber board 4 and breather 21 to expose outside the vehicle, effectively blockked the vehicle and gone in outside mud water and dust entering cavity two 6, thereby prolonged resistant oily vulcanized rubber board 4 and breather 21's life, guarantee the continuation validity of breather plug subassembly 2 to wheel hub cavity 20 internal gas pressure regulation.
The screw plug 18 on the hub end cover body 1 is of a detachable structure, and when the wheel end is rotated to enable the screw plug 18 to be located above the wheel end, the screw plug 18 is taken down, and lubricating oil can be injected into the hub cavity 20. When the wheel end is rotated so that the plug 18 is below the wheel end, the plug 18 is removed and oil can be drained from the hub cavity 20. Thereby facilitating filling and draining of the hub cavity 20.
In the structure, the transparent cover plate 10 and the second through hole 3 on the hub end cover body 1 form a transparent window structure, and the state of the lubricating oil in the hub end cover body 1 can be observed from the transparent window. Be provided with oil level upper limit scale mark 15 and oil level lower limit scale mark 16 on transparent cover plate 10, observe lubricating oil liquid level position from transparent window department, combine oil level upper limit scale mark 15 and oil level lower limit scale mark 16 can judge the oil mass condition of lubricating oil for it is more convenient to observe the interior lubricating oil state of wheel hub.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. The utility model provides a wheel hub end cover assembly of atmospheric pressure in adjustable wheel hub intracavity which characterized in that: the device comprises a hub end cover body, a transparent cover plate and a breather plug assembly;
the hub end cover body is of a barrel-shaped structure, a first through hole is formed in the center of the bottom of the hub end cover body, and a plurality of second through holes are formed in the periphery of the first through hole;
the transparent cover plate is arranged at the bottom in the hub end cover body, and an oil return hole is formed in the transparent cover plate and used for communicating the hub cavity with the central through hole of the hub end cover;
the breather plug assembly comprises a breather plug body, an oil-resistant vulcanized rubber plate and a baffle plate, wherein a through hole is formed in the breather plug body, the oil-resistant vulcanized rubber plate is arranged in the center of the through hole in the breather plug body and is divided into two sections of cavities, and a breather hole is formed in the center of the oil-resistant vulcanized rubber plate and is communicated with the two sections of cavities, one end of the breather plug body is connected with a first through hole in the center of the bottom of a hub end cover body, the other end of the breather plug body is provided with the baffle plate, and a plurality of air holes are formed in the side wall of the section of the breather plug body between the baffle plate and the oil-resistant vulcanized rubber plate and are communicated with the atmosphere through hole in the breather plug body.
2. The hub end cover assembly of claim 1, wherein: the port department that lies in this body of wheel hub end cover on the first through-hole is equipped with annular boss, with wheel hub end cover body formula structure as an organic whole, the circular recess has been seted up with a terminal surface central authorities of bottom surface laminating in the wheel hub end cover on the transparent cover plate, annular boss excircle and circular recess cooperation, and have the interval between annular boss terminal surface and the circular recess bottom, circular recess lateral wall is located to the oil gallery on the transparent cover plate, and lies in the interval department between annular boss terminal surface and the circular recess bottom.
3. The hub end cover assembly of claim 2, wherein: the outer circle of the transparent cover plate is attached to the inner side wall of the hub end cover body, the side wall of the circular groove is attached to the outer circle of the annular boss, the outer circle of the transparent cover plate and the inner side wall of the circular groove are provided with annular grooves respectively, and O-shaped sealing rings are arranged in the annular grooves.
4. The hub end cover assembly of claim 3, wherein: an oil level upper limit scale mark and an oil level lower limit scale mark are arranged on one end face of the transparent cover plate, are annular scale marks and are coaxial with the circular groove, and the oil level lower limit scale mark is located outside the oil level upper limit scale mark.
5. The hub end cover assembly of claim 4, wherein: the inner side wall of the hub end cover body is provided with an annular groove, a clamp spring is arranged in the annular groove, and the upper end face of the clamp spring is matched with the end face of the transparent cover plate and used for limiting and supporting the transparent cover plate.
6. The hub end cover assembly of claim 4, wherein: the first through hole is a threaded hole, the breathing plug body is in threaded connection with the first through hole, the oil-resistant vulcanized rubber plate is fixedly bonded with the breathing plug body, the baffle plate and the breathing plug body are fixedly connected in a riveting mode, the second through hole is of a fan-shaped structure, is uniformly distributed at the bottom of the hub end cover body along the circumferential direction, and can observe an oil level upper limit scale mark and an oil level lower limit scale mark simultaneously through any one second through hole.
7. The hub end cover assembly of claim 1, wherein: a threaded through hole is formed in the side wall of the hub end cover body, a plug screw is arranged in the threaded through hole, and an O-shaped sealing ring is arranged between the side wall of the threaded through hole and the plug screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120554859.2U CN214688843U (en) | 2021-03-18 | 2021-03-18 | Hub end cover assembly capable of adjusting air pressure in hub cavity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120554859.2U CN214688843U (en) | 2021-03-18 | 2021-03-18 | Hub end cover assembly capable of adjusting air pressure in hub cavity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214688843U true CN214688843U (en) | 2021-11-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120554859.2U Active CN214688843U (en) | 2021-03-18 | 2021-03-18 | Hub end cover assembly capable of adjusting air pressure in hub cavity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214688843U (en) |
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2021
- 2021-03-18 CN CN202120554859.2U patent/CN214688843U/en active Active
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