CN218316252U - Transmission shaft intermediate strut and support structure - Google Patents
Transmission shaft intermediate strut and support structure Download PDFInfo
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- CN218316252U CN218316252U CN202221151062.9U CN202221151062U CN218316252U CN 218316252 U CN218316252 U CN 218316252U CN 202221151062 U CN202221151062 U CN 202221151062U CN 218316252 U CN218316252 U CN 218316252U
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Abstract
The utility model relates to a transmission shaft middle support and support structure, which comprises a middle support and a support; the middle support consists of a U-shaped bracket, a dust cover, a metal plate cover, a main spring and a bearing; the dust ring of the dust-blocking cover and the metal plate cover form a labyrinth structure, so that the muddy water blocking effect is good; the main spring adopts a double-C-shaped structure, and the bearing is of a double-sealing structure; the bracket consists of a plurality of mounting holes, reinforcing ribs and a bottom plate; two mounting holes of the U-shaped bracket are respectively aligned with two mounting holes of the bracket and are in threaded connection; the four mounting holes of the bracket are respectively aligned with the four mounting holes on the cross beam and are in threaded connection. The utility model discloses middle support bearing adopts the double containment structure, and the bearing both sides need not to set up independent oil blanket, avoids independent oil blanket abnormal sound problem when guaranteeing sealed reliable; the support structure ensures high rigidity, and is provided with a fine positioning structure which is beneficial to controlling the included angle of the universal joint; the support and the middle support scheme have the advantages of simple structure, good sealing effect, low cost and high NVH quality.
Description
Technical Field
The utility model relates to a bearing structure, concretely relates to transmission shaft intermediate strut and supporting structure.
Background
For a front-engine rear-drive vehicle, a power assembly and a drive axle adopt a transmission shaft for power transmission. Because the distance between the power assembly and the drive axle is far, in order to avoid the excitation frequency of an engine, the transmission shaft generally adopts more than or equal to 2 sections of shafts, so that an intermediate support structure is required to be arranged at the connecting part of two adjacent sections of transmission shafts, the radial movement of the transmission shaft is limited, the vibration is attenuated and absorbed, and the NVH level of the whole vehicle is improved.
The transmission shaft is arranged under the floor of the vehicle body, muddy water on the road surface can splash to the middle support structure in the driving process, and when off-road working conditions such as muddy water exist, the middle support can be soaked in the muddy water for a short time to work, so that the middle support structure is required to have a waterproof function.
The intermediate support bearing of the existing structure generally adopts a non-seal bearing or a single seal bearing, except the seal structure of the bearing, the auxiliary seal structure mainly comprises two types: (1) adopting a waterproof cover structure: splashing muddy water can be shielded, the muddy water condition cannot be solved, at the moment, muddy water can enter two sides of the bearing, a small amount of muddy water can enter lubricating grease in the bearing after the bearing is used for a period of time, the water content of grease is increased, the original lubricating function can be lost, the grease cannot play the due lubricating function, and noise and even damage are generated; (2) Set up solitary oil blanket at the bearing both sides, sealed effect is better, but solitary oil blanket when dispatching from the factory the lip scribbles a small amount of lubricating grease, along with the continuous washing away of muddy water and live time increase and continuous consumption, the final consumption is totally done up, the abnormal sound problem appears easily behind one section mileage.
Disclosure of Invention
An object of the utility model is to provide a transmission shaft intermediate strut and supporting structure to it is poor to solve auxiliary seal structure and keep off muddy water effect, has the problem of the not accurate positioning of oil blanket abnormal sound and support and transmission shaft and automobile body mounting point.
The utility model aims at realizing through the following technical scheme:
a transmission shaft middle support and bracket structure is composed of a middle support 1 and a bracket 2;
the middle support 1 consists of a U-shaped bracket 11, a dust cover 12, a sheet metal cover 13, a main spring 14 and a bearing 15; the dust blocking cover 12 is provided with a dust blocking ring A121 and a dust blocking ring B122 which form a labyrinth structure with the sheet metal cover 13; the main spring 14 adopts a double-C-shaped structure, and the bearing 15 has a double-sealing structure;
the bracket 2 consists of a mounting hole A21, 3 mounting holes B22, a mounting hole C23, a mounting hole D24, a reinforcing rib 25 and a bottom plate 26; two mounting holes E111 of the U-shaped bracket 11 are respectively aligned with a mounting hole C23 and a mounting hole D24 of the bracket 2 and are connected by two bolts 4; the mounting holes a21 and 3 mounting holes B22 of the bracket 2 are respectively aligned with the 4 mounting holes F31 of the beam 3 and connected by four bolts 4.
Further, the two mounting holes E111 are both oblong holes and are used for compensating for the tolerance of the transmission shaft in the length direction.
Further, two seal lips of the oil seal 151 of the bearing 15 are respectively abutted against two straight edges of the L-shaped cover 152.
Furthermore, the diameter of the mounting hole B22 of the bracket 2 is 10.5mm, the diameter of the mounting hole D24 is an oblong hole, the size is 10.5 × 15mm, the diameter of the mounting hole C23 and the width of the mounting hole D24 are both 10.5mm, and the diameter difference between the fitting clearance and the bolt 4 is 0.5mm.
Furthermore, the diameter of the mounting hole A21 of the support 2 is 10.5mm, the mounting hole is a fine positioning hole, the fit clearance between the mounting hole A and the bolt 4 is 0.5mm in diameter difference, and the support 2 is of a die-cast aluminum or sheet metal structure.
Further, the support 2 is provided with 4 reinforcing ribs 25.
Further, the bottom plate 26 of the bracket 2 has a Z-shaped structure.
Further, the bracket 2 is fixed with the cross beam 3 by 4 bolts in two planes by adopting a Z-shaped structural bottom plate 26 and 4 reinforcing ribs 25.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses middle support bearing adopts double containment structure, and the bearing both sides need not to set up solitary oil blanket, avoids solitary oil blanket abnormal sound problem when guaranteeing sealed reliable; the dust-blocking cover and the metal plate cover form a labyrinth structure, so that the mud-blocking effect is good; the support structure ensures high rigidity, and is provided with a fine positioning structure which is beneficial to controlling the included angle of the universal joint; the support and the middle support scheme have the advantages of simple structure, good sealing effect, low cost and high NVH quality.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural view of a middle support and bracket structure of a transmission shaft of the present invention;
FIG. 2 is a schematic structural view of the U-shaped bracket;
FIG. 3 is a schematic view of the structure of the intermediate support;
FIG. 4 is a schematic structural view of the stent;
FIG. 5 is a schematic view of the structure of the base plate;
fig. 6 is a schematic structural view of the mounting hole F.
In the figure, 1, a middle support 11, a U-shaped support 111, a mounting hole E12, a dust blocking cover 121, a dust blocking ring A122, a dust blocking ring B13, a sheet metal cover 14, a main spring 15, a bearing 151, an oil seal 152, an L-shaped cover 2, a support 21, a mounting hole A22, a mounting hole B23, a mounting hole C24, a mounting hole D25, a reinforcing rib 26, a bottom plate 3, a cross beam 31 and a mounting hole F4 are provided, and bolts are arranged.
Detailed Description
The invention will be further described with reference to the following examples:
the present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures associated with the present invention are shown in the drawings, not all of them.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. Meanwhile, in the description of the present invention, the terms "first", "second", and the like are used only for distinguishing the description, and are not to be construed as indicating or implying relative importance.
The support structure of the transmission shaft is also very critical to the NVH horizontal lifting of the transmission system, and when the rigidity of the support is slightly larger, the vibration isolation effect is good; support and transmission shaft and automobile body mounting point need set up smart location structure, and the transmission shaft is askew easily adorning otherwise, leads to the universal joint angle increase, and the increase of universal joint angle can produce self-excited vibration, influences the NVH quality.
The utility model discloses transmission shaft intermediate strut and supporting structure comprises intermediate strut 1 and support 2.
The middle support 1 consists of a U-shaped bracket 11, a dust cover 12, a sheet metal cover 13, a main spring 14 and a bearing 15.
Two mounting holes E111 are formed in the U-shaped support 11, and the two mounting holes E111 are both long round holes and used for compensating the tolerance of the transmission shaft in the length direction.
The dust-blocking cover 12 is provided with a dust-blocking ring A121 and a dust-blocking ring B122, the dust-blocking ring A121, the dust-blocking ring B122 and the sheet metal cover 13 form a labyrinth structure, the mud-blocking effect is good, and mud water can be prevented from entering the periphery of the bearing to the maximum extent.
The main spring 14 adopts a double-C-shaped structure, and can well take the advantages of low dynamic stiffness and large axial stretching amount into consideration.
The bearing 15 is of a double-sealing structure, independent oil seals do not need to be arranged on two sides of the bearing, two sealing lips of the oil seal 151 abut against two straight edges of the L-shaped cover 152 respectively, and sealing reliability is greatly improved.
The middle support 1 adopts a labyrinth mud-blocking structure and a double-seal bearing, so that the sealing reliability of the bearing is ensured, and the problem of independent oil seal abnormal sound is avoided.
The bracket 2 consists of a mounting hole A21, 3 mounting holes B22, a mounting hole C23, a mounting hole D24, a reinforcing rib 25 and a bottom plate 26.
The two mounting holes 111 of the U-shaped bracket 11 are aligned with the mounting holes C23 and D24 of the bracket 2, respectively, and are connected using two bolts 4.
The mounting holes A21 and 3 mounting holes B22 of the bracket 2 are respectively aligned with the 4 mounting holes F31 on the cross beam 3 and connected by four bolts 4, and the specification of the bolts 4 is M10.
The diameter of the mounting hole B22 of the support 2 is 10.5mm, the diameter of the mounting hole D24 is an oblong hole, the size is 10.5 x 15mm, the diameter of the mounting hole C23 and the width of the mounting hole D24 are both 10.5mm, and the diameter difference of the fit clearance between the mounting hole C23 and the bolt 4 is 0.5mm.
The diameter of a mounting hole A21 of the support 2 is 10.5mm, the mounting hole is a fine positioning hole, the diameter difference of the mounting hole A21 and the bolt 4 is 0.5mm, and the support 2 is of a die-cast aluminum or sheet metal structure.
The support 2 is provided with 4 reinforcing ribs 25.
The bottom plate 26 of the bracket 2 is of a Z-shaped structure.
The bracket 2 is fixed with the cross beam 3 by 4 bolts in two planes by adopting a Z-shaped structural bottom plate 26 and 4 reinforcing ribs 25, so that the rigidity of the bracket 2 is improved, the transmission of the vibration of a drive system to a cab along the bracket 2 and the cross beam 3 is reduced to the maximum extent, and the transmission of noise is controlled.
The number of the reinforcing ribs 25 of the bracket 2, the mounting holes and the specification of the bolts 4 can be adjusted according to practical application.
It should be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles applied thereto. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.
Claims (8)
1. The utility model provides a transmission shaft intermediate strut and supporting structure which characterized in that: consists of a middle support (1) and a bracket (2);
the middle support (1) consists of a U-shaped bracket (11), a dust cover (12), a sheet metal cover (13), a main spring (14) and a bearing (15); the dust blocking cover (12) is provided with a plurality of dust blocking rings which form a labyrinth structure with the sheet metal cover (13); the main spring (14) adopts a double-C-shaped structure, and the bearing (15) has a double-sealing structure;
the support (2) consists of a mounting hole A (21), 3 mounting holes B (22), a mounting hole C (23), a mounting hole D (24), reinforcing ribs (25) and a bottom plate (26); two mounting holes E (111) of the U-shaped bracket (11) are respectively aligned with a mounting hole C (23) and a mounting hole D (24) of the bracket (2) and connected through bolts; and the mounting holes A (21) and the 3 mounting holes B (22) of the bracket (2) are respectively aligned with the 4 mounting holes F (31) on the cross beam (3) and are connected through bolts.
2. The intermediate support and bracket structure for a transmission shaft according to claim 1, wherein: the two mounting holes E (111) are both oblong holes and are used for compensating the tolerance of the transmission shaft in the length direction.
3. The intermediate support and bracket structure for a transmission shaft according to claim 1, wherein: two sealing lips of an oil seal (151) of the bearing (15) are respectively abutted against two straight edges of the L-shaped cover (152).
4. The intermediate support and bracket structure for a transmission shaft according to claim 1, wherein: the diameter of a mounting hole B (22) of the support (2) is 10.5mm, a mounting hole D (24) is an oblong hole with the size of 10.5 x 15mm, the diameter of the mounting hole C (23) and the width of the mounting hole D (24) are both 10.5mm, and the diameter difference of a fit clearance between the mounting hole C and the bolt (4) is 0.5mm.
5. The intermediate support and bracket structure for a transmission shaft according to claim 1, wherein: the diameter of a mounting hole A (21) of the support (2) is 10.5mm, the mounting hole A is a fine positioning hole, the diameter difference of the mounting hole A and the diameter difference of a fit clearance of the bolt (4) is 0.5mm, and the support (2) is of a die-cast aluminum or sheet metal structure.
6. The intermediate support and bracket structure for a transmission shaft according to claim 1, wherein: the support (2) is provided with 4 reinforcing ribs (25).
7. The intermediate support and bracket structure for a transmission shaft according to claim 1, wherein: the bottom plate (26) of the bracket (2) is of a Z-shaped structure.
8. The intermediate support and bracket structure for a transmission shaft according to claim 1, wherein: the support (2) is fixed with the beam (3) by 4 bolts in two planes by adopting a Z-shaped structural bottom plate (26) and 4 reinforcing ribs (25).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221151062.9U CN218316252U (en) | 2022-05-13 | 2022-05-13 | Transmission shaft intermediate strut and support structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221151062.9U CN218316252U (en) | 2022-05-13 | 2022-05-13 | Transmission shaft intermediate strut and support structure |
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| Publication Number | Publication Date |
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| CN218316252U true CN218316252U (en) | 2023-01-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202221151062.9U Active CN218316252U (en) | 2022-05-13 | 2022-05-13 | Transmission shaft intermediate strut and support structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117072569A (en) * | 2023-10-18 | 2023-11-17 | 万向钱潮股份公司 | Bearing frame structure of transmission shaft and transmission shaft assembly thereof |
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2022
- 2022-05-13 CN CN202221151062.9U patent/CN218316252U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117072569A (en) * | 2023-10-18 | 2023-11-17 | 万向钱潮股份公司 | Bearing frame structure of transmission shaft and transmission shaft assembly thereof |
| CN117072569B (en) * | 2023-10-18 | 2023-12-29 | 万向钱潮股份公司 | Bearing frame structure of transmission shaft and transmission shaft assembly thereof |
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