CN220772456U - Device for measuring tightness of hub bearing - Google Patents
Device for measuring tightness of hub bearing Download PDFInfo
- Publication number
- CN220772456U CN220772456U CN202322647005.0U CN202322647005U CN220772456U CN 220772456 U CN220772456 U CN 220772456U CN 202322647005 U CN202322647005 U CN 202322647005U CN 220772456 U CN220772456 U CN 220772456U
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- air inlet
- main shaft
- hub
- inner ring
- shaft
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- 238000007789 sealing Methods 0.000 claims abstract description 36
- 238000012360 testing method Methods 0.000 abstract description 10
- 238000000034 method Methods 0.000 description 9
- 238000001514 detection method Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Rolling Contact Bearings (AREA)
Abstract
The utility model relates to the technical field of bearing assembly tools, in particular to a device for measuring the tightness of a hub bearing, which comprises a lock nut, an air inlet end cover, a shaft air inlet channel and an air inlet plug, wherein the lock nut is detachably connected with a main shaft so as to lock the axial position of the hub bearing; the air inlet end cover is detachably fixed on the end face of one side of the hub in a sealing way, a cavity is formed between the air inlet end cover and the end face of one side, far away from the lock nut, of the main shaft, and the air inlet end cover is provided with an air inlet hole; the shaft air inlet channel is arranged on the main shaft and is communicated with a gap on one side of the sealing piece between the inner rings, which is close to the central shaft of the main shaft, through the cavity; the air inlet plug is matched with an opening of the shaft air inlet channel at one side of the chamber. The utility model can test the tightness of the fully sealed structure of the hub bearing unit, and has the advantages of simple structure, convenient disassembly and assembly and convenient operation.
Description
Technical Field
The utility model relates to the technical field of bearing assembly tools, in particular to a device for measuring the tightness of a hub bearing.
Background
The hub bearing unit generally adopts full-sealed design, and both ends and the centre of bearing are equipped with combined type sealing washer, and combined type sealing washer is split type structure, to guarantee the leakproofness to the bearing, need test the leakproofness of sealing washer.
Disclosure of Invention
In view of the defects of the prior art, the utility model provides a device for measuring the tightness of a hub bearing, which can test the tightness of a fully-sealed structure of a hub bearing unit, and has the advantages of simple structure, convenience in assembly and disassembly and convenience in operation.
In order to achieve the above object, the present utility model provides a device for measuring tightness of a hub bearing, wherein the hub bearing is disposed between a hub and a main shaft, and the hub bearing includes a first inner ring, a second inner ring, an inter-inner ring seal disposed between the first inner ring and the second inner ring, a first external seal disposed between the first inner ring and the hub, and a second external seal disposed between the second inner ring and the hub; the device comprises a lock nut, an air inlet end cover, a shaft air inlet channel and an air inlet plug, wherein the lock nut is detachably connected with the main shaft so as to lock the axial position of the hub bearing; the air inlet end cover is detachably and hermetically fixed on the end face of one side of the hub, a cavity is formed between the air inlet end cover and the end face of one side, far away from the lock nut, of the main shaft, and the air inlet end cover is provided with an air inlet hole; the shaft air inlet channel is arranged on the main shaft and is communicated with a gap on one side of the sealing piece between the inner rings, which is close to the central shaft of the main shaft, through the cavity; the air inlet plug is matched with an opening of the shaft air inlet channel at one side of the chamber.
Further, the shaft air inlet channel comprises an axle center channel arranged along the axis of the main shaft and a transverse channel arranged perpendicular to the axle center channel, and the transverse channel is communicated with the gap.
Further, an annular groove is formed in the outer diameter of the main shaft, the projection of the sealing piece between the inner rings on the outer diameter of the main shaft along the radial direction falls on the groove bottom surface of the annular groove, and the gap is formed among the inner diameter of the first inner ring, the inner diameter of the second inner ring and the annular groove.
Further, a sealing gasket is arranged between the air inlet end cover and the end face of the hub.
The method for detecting the tightness of the hub bearing comprises the steps of forming a shaft air inlet channel on a main shaft, installing the main shaft into the hub bearing, locking the locking nut, introducing gas from an opening of the shaft air inlet channel at one side of a cavity, and observing the tightness of the inner ring sealing member.
The method for detecting the tightness of the hub bearing comprises the steps of installing the main shaft into the hub bearing, locking the lock nut, blocking and sealing an opening of an air inlet channel of the shaft at one side of the cavity by using air inlet, installing the air inlet end cover on one side end surface of the hub, introducing air from an air inlet hole of the air inlet end cover, and observing the tightness of the external sealing element.
The utility model has the beneficial effects that: the device can test the tightness of the fully-sealed structure of the hub bearing unit, and has the advantages of simple structure, convenience in disassembly and assembly and convenience in operation.
Drawings
FIG. 1 is a schematic diagram of an apparatus for measuring the tightness of a hub bearing according to an embodiment of the present utility model;
in the figure: 10. a device for measuring the tightness of a bearing of a wheel hub,
100. the locking nut is used for locking the nut,
200. an air inlet end cover 210, an air inlet hole 220 and a sealing gasket,
300. shaft air inlet channels, 310, shaft center channels, 320, transverse channels,
400. the air inlet is blocked up,
20. hub bearings 21, first inner ring 22, second inner ring 23, inter-inner ring seals 24, first outer seals 25, second outer seals,
30. the wheel hub is provided with a plurality of grooves,
40. a main shaft, 41, an annular groove,
a. chamber b, void, c, opening.
Detailed Description
In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. The present utility model may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the utility model, whereby the utility model is not limited to the specific embodiments disclosed below.
Referring to fig. 1, in an apparatus 10 for measuring tightness of a hub bearing according to an embodiment of the present utility model, a hub bearing 20 is disposed between a hub 30 and a main shaft 40, and the hub bearing 20 includes a first inner ring 21, a second inner ring 22, an inter-ring seal 23 disposed between the first inner ring 21 and the second inner ring 22, a first outer seal 24 disposed between the first inner ring 21 and the hub 30, and a second outer seal 25 disposed between the second inner ring 22 and the hub 30. When specifically provided, the first outer seal 24 and the second outer seal 25 may be provided as lip seals of a strip steel skeleton.
The device for measuring the tightness of the hub bearing 10 comprises a lock nut 100, an air inlet end cover 200, a shaft air inlet channel 300 and an air inlet plug 400, wherein the lock nut 100 is detachably connected with a main shaft 40 so as to lock the axial position of the hub bearing 20; the air inlet end cover 200 is detachably fixed on the end surface of one side of the hub 30 in a sealing way, a cavity a is formed between the air inlet end cover 200 and the end surface of one side of the main shaft 40, which is far away from the lock nut 100, and the air inlet end cover 200 is provided with an air inlet hole 210; the shaft air inlet channel 300 is arranged on the main shaft 40, and the shaft air inlet channel 300 is communicated with a gap b on one side of the inner ring sealing piece 23, which is close to the central shaft of the main shaft 40, from the cavity a; the air intake block 400 is fitted with an opening c of the shaft air intake passage 300 on the side of the chamber a.
The device 10 for measuring the tightness of the hub bearing is provided with a shaft air inlet channel 300 formed in the main shaft 40, so that a cavity a formed between the air inlet end cover 200 and the end surface of the main shaft 40 at the side far away from the lock nut 100 is communicated with a gap b at the side of the inner ring sealing member 23 close to the central shaft of the main shaft 40. When testing, the hub with the hub bearing 20 and the main shaft are required to be taken as a whole, the whole is immersed in water, after the testing gas enters from the opening c, if the tightness of the inter-inner ring sealing piece 23 meets the requirement, the gas cannot pass through the inter-inner ring sealing piece 23, and enters between two bearing outer rings in the hub bearing 20, so that no bubbles can occur; conversely, if the seal performance of the inter-inner ring seal 23 is not satisfactory, gas enters between the two bearing outer rings inside the hub bearing 20, and bubbles occur at this position.
Referring to fig. 1, in an embodiment, the shaft air inlet channel 300 includes a shaft center channel 310 formed along the axis of the main shaft 40 and a transverse channel 320 formed perpendicular to the shaft center channel 310, and the transverse channel 320 communicates with the gap b. The number of the transverse passages 320 is not limited, and in a specific arrangement, the shaft inlet passage 300 may be arranged as a T-shaped gas passage, that is, only two transverse passages 320 at 180 ° with respect to each other, as shown in fig. 1. In addition to the above arrangement, a plurality of transverse channels 320 may be led out from the axial channel 310, and the transverse channels 320 are distributed at equal angles and all communicate with the gap b.
Referring to fig. 1, in an embodiment, the outer diameter of the main shaft 40 is provided with an annular groove 41, and the projection of the inter-inner-ring seal 23 on the outer diameter of the main shaft 40 in the radial direction falls on the groove bottom surface of the annular groove 41, and a gap is formed between the inner diameter of the first inner ring 21, the inner diameter of the second inner ring 22 and the annular groove 41. In this way, the gas can be directly introduced to the inner diameter surface of the inner side of the inter-inner-ring seal 23 at the first inner ring 21 and the second inner ring 22, facilitating the test of the sealability of the inter-inner-ring seal 23.
Referring to fig. 1, in one embodiment, a gasket 220 is provided between the inlet end cap 200 and the end face of the hub 30. The sealing gasket 220 is arranged on the device 10 for measuring the tightness of the hub bearing, so that the end face of the air inlet end cover 200, which is fixed on one side of the hub 30, can be further ensured, and the accuracy of the tightness detection result can be improved.
The method for measuring the tightness of the hub bearing adopts the device 10 for measuring the tightness of the hub bearing, which comprises a method for detecting the tightness of the inter-inner-ring sealing member 23, wherein the method for detecting the tightness of the inter-inner-ring sealing member 23 comprises the steps of opening a shaft air inlet channel 300 on a main shaft 40, installing the main shaft 40 into the hub bearing 20, locking a locking nut 100, introducing air from an opening c of the shaft air inlet channel 300 at one side of a chamber a, and observing the tightness of the inter-inner-ring sealing member 23.
The method for measuring the tightness of the hub bearing comprises the steps of adopting any device 10 for measuring the tightness of the hub bearing, namely, detecting the tightness of the external sealing elements, namely, detecting the tightness of the first external sealing element 24 and the second external sealing element 25, wherein the method for detecting the tightness of the external sealing elements comprises the steps of installing a main shaft 40 into the hub bearing 20, locking a locking nut 100, closing an opening c of a shaft air inlet channel 300 on the side of a cavity a by using an air inlet plug 400, installing an air inlet end cover 200 on the end surface on the side of the hub 30, introducing air from an air inlet hole of the air inlet end cover 200, and observing the tightness of the external sealing elements.
The method for measuring the tightness of the hub bearing forms an internal gas path for testing by utilizing a structure arranged on the main shaft 40, and completes the tightness detection of the sealing piece 23 between the inner rings; the installation of the air inlet plug 400 blocks the internal air passage for testing, the installation of the air inlet end cover 200 forms the external air passage for testing, the tightness detection of the external sealing element is completed, the operation is simple, the number of disassembly and assembly parts is small, the transportation and the carrying are convenient, and the adaptation degree of the split sealing mode of the device and the method and the hub bearing unit is high.
In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature. It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.
Claims (4)
1. A device for measuring the tightness of a hub bearing, characterized in that: the hub bearing is arranged between the hub and the main shaft and comprises a first inner ring, a second inner ring, an inter-inner ring sealing piece arranged between the first inner ring and the second inner ring, a first external sealing piece arranged between the first inner ring and the hub and a second external sealing piece arranged between the second inner ring and the hub; the device comprises
The lock nut is detachably connected with the main shaft so as to lock the axial position of the hub bearing;
the air inlet end cover is detachably fixed on the end face of one side of the hub in a sealing mode, a cavity is formed between the air inlet end cover and the end face of one side, far away from the lock nut, of the main shaft, and an air inlet hole is formed in the air inlet end cover;
the shaft air inlet channel is formed in the main shaft and is communicated with a gap on one side, close to the central shaft of the main shaft, of the sealing piece between the inner rings through the cavity;
and the air inlet plug is matched with an opening of the shaft air inlet channel at one side of the cavity.
2. A device for measuring the tightness of a hub bearing according to claim 1, wherein: the shaft air inlet channel comprises an axle center channel arranged along the axis of the main shaft and a transverse channel arranged perpendicular to the axle center channel, and the transverse channel is communicated with the gap.
3. A device for measuring the tightness of a hub bearing according to claim 1 or 2, characterized in that: the outer diameter of the main shaft is provided with an annular groove, the projection of the sealing piece between the inner rings on the outer diameter of the main shaft along the radial direction falls on the groove bottom surface of the annular groove, and the gap is formed among the inner diameter of the first inner ring, the inner diameter of the second inner ring and the annular groove.
4. A device for measuring the tightness of a hub bearing according to claim 1, wherein: and a sealing gasket is arranged between the air inlet end cover and the end face of the hub.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322647005.0U CN220772456U (en) | 2023-09-28 | 2023-09-28 | Device for measuring tightness of hub bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322647005.0U CN220772456U (en) | 2023-09-28 | 2023-09-28 | Device for measuring tightness of hub bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220772456U true CN220772456U (en) | 2024-04-12 |
Family
ID=90598740
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322647005.0U Active CN220772456U (en) | 2023-09-28 | 2023-09-28 | Device for measuring tightness of hub bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220772456U (en) |
-
2023
- 2023-09-28 CN CN202322647005.0U patent/CN220772456U/en active Active
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| GR01 | Patent grant |