CN214793633U - Self sealss differential mechanism differential side gear gas tightness detects auxiliary device - Google Patents
Self sealss differential mechanism differential side gear gas tightness detects auxiliary device Download PDFInfo
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- CN214793633U CN214793633U CN202121150960.8U CN202121150960U CN214793633U CN 214793633 U CN214793633 U CN 214793633U CN 202121150960 U CN202121150960 U CN 202121150960U CN 214793633 U CN214793633 U CN 214793633U
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Abstract
The utility model belongs to machine part detection area, concretely relates to self sealss differential mechanism differential side gear gas tightness detects auxiliary device. The specific technical scheme is as follows: the detection device comprises a detection base, wherein a groove for accommodating a half axle gear wheel shaft is formed in the detection base, a vent hole is formed in the bottom of the groove, and the vent hole penetrates through the detection base; the upper surface of the detection base and the position in contact with the gear installation surface are provided with a first sealing ring groove, and a first sealing ring is arranged in the first sealing ring groove. The device can detect the sealing performance of the plugging cover plugging and the cavity in the half-axle gear when the half-axle gear mounting surface is used as a sealing surface, and has the advantages of simple structure and convenient operation.
Description
Technical Field
The utility model belongs to machine part detection area, concretely relates to self sealss differential mechanism differential side gear gas tightness detects auxiliary device.
Background
The differential is a main component of a drive axle and consists of a planetary gear, a planet gear carrier, a half axle gear and other parts, wherein the half axle gear consists of a wheel shaft and a wheel body. With the development of automobile manufacturing industry, the requirements of automatic differentials are higher and higher, and the structures of the automatic differentials are more and more complex. Differential side gears are usually installed inside a transmission case in a differential case, but the inner holes of the side gears are exposed to facilitate the installation of wheel transmission shafts, and in order to prevent the leakage of lubricating oil in the transmission case, the sealing performance of the side gear installation surface and the side gear wheel shaft diameter end surface is usually required to be ensured. Meanwhile, the inner hole and the shaft diameter of the half shaft gear must be sealed in a sealing mode, if the inner hole and the shaft diameter of the half shaft gear are not sealed in a sealing mode, lubricating oil in the gearbox leaks, the lubricating oil is polluted, a good lubricating effect cannot be guaranteed, and the lubricating oil cannot be recycled. A blocking cover is arranged in an inner hole of the half axle gear for blocking, and a sealing ring is used between a shaft of the half axle gear and a shell of the transmission case for blocking and sealing.
Therefore, when the side gear mounting surface and the axle diameter end surface of the side gear axle are respectively used as sealing surfaces, it is important to accurately and unmistakably detect the air tightness of the cavity in the side gear axle.
SUMMERY OF THE UTILITY MODEL
For solving the problem in the background art, the utility model aims at providing a self sealss differential mechanism side gear gas tightness detects auxiliary device.
In order to realize the purpose of the utility model, the utility model adopts the technical proposal that: an auxiliary device for detecting the air tightness of a self-sealing differential half-axle gear comprises a detection base, wherein a groove for accommodating a half-axle gear wheel shaft is formed in the detection base, an air hole is formed in the bottom of the groove, and the air hole penetrates through the detection base; the upper surface of the detection base and the position in contact with the gear installation surface are provided with a first sealing ring groove, and a first sealing ring is arranged in the first sealing ring groove.
Preferably: the first sealing ring is an O-shaped sealing ring.
Preferably: the interior bottom surface of recess and the position that contacts with side gear shaft diameter of axle terminal surface are provided with the second seal ring groove, be provided with the second seal ring in the second seal ring groove.
Preferably: the second seal ring is a planar annular seal ring.
Preferably: the upper surface of the detection base and the position, which is in contact with the gear installation surface, are provided with limiting grooves, and limiting pins are arranged in the limiting grooves.
Preferably: the number of the limiting pins is more than or equal to 2.
Preferably: when the number of the limiting pins is 2, the two limiting pins are symmetrically arranged along the axis of the axle of the half axle gear.
Preferably: the pressing mechanism is arranged above the detection base and used for extruding the top surface of the side gear.
Preferably: the lower end of the vent hole is in threaded connection with an air pipe, and the other end of the air pipe is connected with air tightness detection equipment.
The utility model discloses following beneficial effect has:
the groove for accommodating the axle of the half axle gear is formed in the detection base, the air vent penetrating through the detection base is formed in the bottom of the groove, the first sealing ring groove is formed in the upper surface of the detection base, the first sealing ring is arranged in the first sealing ring groove, air is filled into the cavity of the axle of the half axle gear through the air vent during detection, and air is automatically cut off after the air filling amount meets requirements to check the air tightness. The device can detect the sealing performance of the plugging cover plugging and the cavity in the half axle gear when the gear mounting surface of the half axle gear is used as a sealing surface, and has the advantages of simple structure and convenient operation.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of a portion A of FIG. 1;
fig. 3 is a schematic view of the appearance structure of the present invention.
In the drawings, the reference numbers: the device comprises a pressing mechanism 1, a detection base 2, a vent hole 3, a groove 4, a side gear 5, a limiting pin 6, a first sealing ring 7, a second sealing ring 8, a first sealing ring groove 9 and a limiting groove 10.
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. Unless otherwise specified, the technical means used in the examples are conventional means well known to those skilled in the art.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description of the present invention, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
The self-sealing differential side gear air tightness detection auxiliary device comprises a detection base 2, wherein a groove 4 capable of containing a wheel axle of a side gear 5 is formed in the detection base 2, a vent hole 3 is formed in the bottom of the groove 4, and the vent hole 3 penetrates through the detection base 2. It should be noted that the utility model discloses a be provided with the blanking cover shutoff on the hole of the side gear 5 that the device detected, what detected is the sealing performance of cavity in blanking cover shutoff, the side gear 5.
When using 5 gear installation faces of side gear as the sealing surface, in order to detect cavity sealing performance in blanking cover shutoff, side gear 5, the upper surface of detecting base 2 and the position that contacts with gear installation face are provided with first seal ring groove 9, be provided with first seal ring 7 in the first seal ring groove 9, first seal ring 7 can be O type sealing washer, plane ring type sealing washer or other types's sealing washer, preferred O type sealing washer. It should be noted that, when the first seal ring 7 is installed in the first seal ring groove 9, the first seal ring 7 is higher than the upper plane of the first seal ring groove 9 by a certain distance, and after the side gear 5 is pressed, the higher distance of the first seal ring 7 can play a role in sealing.
The lower extreme in the air vent 3 is provided with the internal thread, the lower extreme threaded connection of air vent 3 has the trachea, the trachea other end is connected with gas tightness check out test set. It should be noted that the positions of the vent holes 3 at the bottom in the groove 4 are specifically: when the axle of the side gear 5 is inserted into the groove 4, the vent hole 3 is communicated with the inner cavity of the axle of the side gear 5, namely, the air tightness detection equipment can charge air into the inner cavity of the axle of the side gear 5 through the vent hole 3. When the air tightness detection device is used, the axle of the half axle gear 5 is inserted into the groove 4 and is tightly pressed, and the air tightness detection device is started to charge air into the cavity of the axle of the half axle gear 5; when the amount of the charged air meets the technical requirement range, the air is automatically cut off, and the air tightness detection equipment starts to detect the air tightness of the half axle gear 5.
When using shaft diameter of axle terminal surface as the sealing surface, in order to detect the sealing performance of blanking cover shutoff, 5 shaft internal cavities of side gear, the interior bottom surface of recess 4 and the position that contacts with shaft diameter of axle terminal surface are provided with the sealed annular of second, be provided with the sealed ring 8 of second in the sealed annular of second, the sealed ring 8 of second can be O type sealing washer, plane ring seal or other types's sealing washer, preferred plane ring seal. It should be noted that, when the second seal ring 8 is installed in the second seal ring groove, the second seal ring 8 is higher than the upper plane of the second seal ring groove by a certain distance, and after the side gear 5 is pressed, the higher distance of the second seal ring 8 can play a role in sealing.
In order to better press the axle of the side gear 5 in the groove 4, the air tightness detection device further comprises a pressing mechanism 1, wherein the pressing mechanism 1 is arranged above the detection base 2 and extrudes the top surface of the side gear 5. In order to realize more automatic detection, the pressing mechanism 1 can be arranged at the output end of the telescopic cylinder, the working process of the telescopic cylinder is controlled by a PLC (programmable logic controller), the telescopic cylinder extends out, and the pressing mechanism 1 moves downwards to extrude the top surface of the half axle gear 5; the telescopic cylinder retracts, and the pressing mechanism 1 moves upwards to be away from the top surface of the side gear 5. Of course, the pressing mechanism 1 may also be disposed at the output end of the linear motor and the servo motor, and the lifting movement of the pressing mechanism 1 is realized through the linear motor and the servo motor. The pressing mechanism 1 can be a cylinder, a cube, a cuboid or other forms, but the contact surface between the pressing mechanism 1 and the upper surface of the half axle gear is a horizontal plane, so that the upper surface of the half axle gear is prevented from being damaged in the extrusion process; it is also necessary that the lower surface of the hold-down mechanism 1 does not press the tooth surfaces of the side gears during use.
When the pressing mechanism 1 presses the half axle gear 5, in order to limit the axial movement distance of the axle of the half axle gear 5 and prevent the axial movement distance from being too large, so that the stress of the second sealing ring 8 is too large, the service life is prolonged, a limiting groove 10 is arranged at the position, contacting with the gear installation surface, of the upper surface of the detection base 2, and a limiting pin 6 is arranged in the limiting groove 10. The number of the limiting pins 6 is more than or equal to 2; when the number of the limiting pins 6 is 2, the two limiting pins 6 are symmetrically arranged along the axle axis of the half axle gear; when the number of the limiting pins 6 is more than 2, the limiting pins 6 are randomly arranged. It should be noted that the setting of the stopper pin 6 needs to avoid the first seal ring 7, that is, the stopper pin 6 and the first seal ring 7 cannot be on the same vertical line.
The utility model provides a self sealss differential mechanism side gear gas tightness detects auxiliary device's working process: when the device is used, when the sealing performance of the cavity in the half axle gear 5 needs to be detected by taking the gear mounting surface as a sealing surface, the second sealing ring 8 is taken down, and the limiting pin 6 is mounted; when the axle diameter end face is used as a sealing face to detect the sealing performance of the inner cavity of the axle of the half axle gear 5, the first sealing ring 7 and the limiting pin 6 are taken down. During detection, the axle of the half axle gear 5 is inserted into the groove 4, the telescopic cylinder drives the pressing mechanism 1 to move downwards to press the axle of the half axle gear 5 in the groove 4, and after pressing, the air tightness detection equipment is started to charge air into the cavity of the axle of the half axle gear 5; the air is automatically cut off after the amount of the charged air meets the technical requirement range, and the air tightness detection equipment starts to detect the self-sealing performance of the half axle gear 5.
The above-mentioned embodiments are only for describing the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and various changes, modifications, amendments, and substitutions made by the technical solutions of the present invention by those skilled in the art should fall within the protection scope defined by the claims of the present invention without departing from the design spirit of the present invention.
Claims (9)
1. The utility model provides a self sealss differential mechanism side gear gas tightness detects auxiliary device which characterized in that: the device comprises a detection base (2), wherein a groove (4) for accommodating a wheel axle of a half axle gear (5) is formed in the detection base (2), a vent hole (3) is formed in the bottom of the groove (4), and the vent hole (3) penetrates through the detection base (2); the upper surface of the detection base (2) and the position contacted with the gear installation surface are provided with a first sealing ring groove (9), and a first sealing ring (7) is arranged in the first sealing ring groove (9).
2. The self-sealing differential side gear airtightness detection auxiliary device according to claim 1, characterized in that: the first sealing ring (7) is an O-shaped sealing ring.
3. The self-sealing differential side gear airtightness detection auxiliary device according to claim 1, characterized in that: the interior bottom surface of recess (4) and the position that contacts with side gear shaft diameter of axle terminal surface are provided with the second seal ring groove, be provided with second seal ring (8) in the second seal ring groove.
4. The self-sealing differential side gear airtightness detection auxiliary device according to claim 3, characterized in that: the second sealing ring (8) is a plane annular sealing ring.
5. The self-sealing differential side gear airtightness detection auxiliary device according to claim 3, characterized in that: the upper surface of the detection base (2) and the position, which is in contact with the gear installation surface, are provided with limiting grooves (10), and limiting pins (6) are arranged in the limiting grooves (10).
6. The self-sealing differential side gear airtightness detection auxiliary device according to claim 5, characterized in that: the number of the limiting pins (6) is more than or equal to 2.
7. The self-sealing differential side gear airtightness detection auxiliary device according to claim 6, characterized in that: when the number of the limiting pins (6) is 2, the two limiting pins (6) are symmetrically arranged along the axis of the axle of the half axle gear.
8. The self-sealing differential side gear airtightness detection auxiliary device according to any one of claims 1 to 7, characterized in that: the device is characterized by further comprising a pressing mechanism (1), wherein the pressing mechanism (1) is arranged above the detection base (2) and used for extruding the top surface of the side gear (5).
9. The self-sealing differential side gear airtightness detection auxiliary device according to claim 8, characterized in that: the lower end of the vent hole (3) is in threaded connection with an air pipe, and the other end of the air pipe is connected with air tightness detection equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121150960.8U CN214793633U (en) | 2021-05-26 | 2021-05-26 | Self sealss differential mechanism differential side gear gas tightness detects auxiliary device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121150960.8U CN214793633U (en) | 2021-05-26 | 2021-05-26 | Self sealss differential mechanism differential side gear gas tightness detects auxiliary device |
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| CN214793633U true CN214793633U (en) | 2021-11-19 |
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| CN202121150960.8U Active CN214793633U (en) | 2021-05-26 | 2021-05-26 | Self sealss differential mechanism differential side gear gas tightness detects auxiliary device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116399525A (en) * | 2023-05-05 | 2023-07-07 | 武汉精技机械有限责任公司 | Self-sealing differential mechanism semi-axis gear gland and airtight detection device |
-
2021
- 2021-05-26 CN CN202121150960.8U patent/CN214793633U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116399525A (en) * | 2023-05-05 | 2023-07-07 | 武汉精技机械有限责任公司 | Self-sealing differential mechanism semi-axis gear gland and airtight detection device |
| CN116399525B (en) * | 2023-05-05 | 2024-01-19 | 东实精工齿轮(武汉)有限公司 | Self-sealing differential mechanism semi-axis gear gland and airtight detection device |
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