CN111516606B - Installation structure of vibration absorber of front auxiliary frame of automobile - Google Patents
Installation structure of vibration absorber of front auxiliary frame of automobile Download PDFInfo
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- CN111516606B CN111516606B CN202010349868.8A CN202010349868A CN111516606B CN 111516606 B CN111516606 B CN 111516606B CN 202010349868 A CN202010349868 A CN 202010349868A CN 111516606 B CN111516606 B CN 111516606B
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- vibration absorber
- auxiliary frame
- mass
- front auxiliary
- mass block
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R11/00—Arrangements for holding or mounting articles, not otherwise provided for
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Body Structure For Vehicles (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The invention relates to a mounting structure of a vibration absorber of a front auxiliary frame of an automobile, which comprises a vibration absorber connected on the front auxiliary frame in a matching way, and is characterized in that: and the front auxiliary frame is provided with a mounting hole, and the vibration absorber is matched and connected with the mounting hole on the front auxiliary frame. The driving comfort can be improved, and the rolling problem caused by acceleration can be better solved; the direct heat radiation of the exhaust pipe to the vibration absorber can be avoided, and the influence of the exhaust pipe on the vibration absorber is reduced; meanwhile, the vibration absorber occupies small space, so that the vibration absorber is not limited by the space arrangement of the front auxiliary frame, and the front auxiliary frame is more attractive; the connection is reliable, the universality is strong, the development time is short, and the installation efficiency is high.
Description
Technical Field
The invention relates to an automobile chassis, in particular to an automobile front subframe vibration absorber mounting structure.
Background
The front suspension of the current passenger vehicle mostly adopts a Macpherson suspension, the front auxiliary frame is a very important part on the front suspension, the front auxiliary frame of most of vehicles adopts a butterfly structure, the front auxiliary frame often receives a plurality of excitations from a power assembly and a road surface, the front auxiliary frame easily causes the vehicle interior to roar in the first-order mode of the whole vehicle restraint state, and a vibration absorber can be added on the front auxiliary frame for improving the driving comfort and solving the problem of the vehicle interior roar. The vibration absorber generally consists of two parts, namely rubber and a mass block, wherein the rubber is generally made of natural rubber, the working temperature cannot exceed 90 ℃ at ordinary times, and the limit condition cannot exceed 120 ℃.
The existing mounting structure of the vibration absorber of the front subframe of the automobile is shown in fig. 1 and comprises an original vibration absorber mounting bracket 2 which is connected to an original front subframe 1 in a matching manner and an original vibration absorber 3 which is connected with the original vibration absorber mounting bracket 2 in a matching manner. Because the volume of former bump leveller 3 is great, occupation space is great during the installation, receives spatial arrangement's restriction, generally installs former bump leveller at former front sub vehicle frame 1's rear portion, and it is nearer from the distance of blast pipe 4, and the temperature of blast pipe is higher, easily makes the ageing inefficacy of rubber of former bump leveller, leads to former bump leveller can not reach good shock absorption effect. Meanwhile, in the assembling process, an assembling station of an original vibration absorber mounting bracket needs to be added on an assembling line, so that the workload is increased. Because the structure of sub vehicle frame is different before every motorcycle type, need to the bump leveller that increases differently, and the mode of sub vehicle frame is different before every, debugs the frequency through increasing the quality piece or modifying rubber by hand on the basis of former bump leveller in NVH debugging process, wastes time and energy. Therefore, the existing mounting structure of the shock absorber of the front subframe of the automobile needs to be improved.
Disclosure of Invention
The invention aims to provide a mounting structure of a vibration absorber of a front auxiliary frame of an automobile, which can improve driving comfort and better solve the problem of rolling caused by acceleration; the direct heat radiation of the exhaust pipe to the vibration absorber can be avoided, and the influence of the exhaust pipe on the vibration absorber is reduced; meanwhile, the vibration absorber occupies small space, so that the vibration absorber is not limited by the space arrangement of the front auxiliary frame, and the front auxiliary frame is more attractive; the connection is reliable, the universality is good, the development time is short, and the installation efficiency is high.
The invention relates to a mounting structure of a vibration absorber of a front auxiliary frame of an automobile, which comprises the vibration absorber connected on the front auxiliary frame in a matching way, and is characterized in that: and the front auxiliary frame is provided with a mounting hole, and the vibration absorber is matched and connected with the mounting hole on the front auxiliary frame.
Further, the front subframe comprises a front subframe upper plate and a front subframe lower plate; the mounting holes comprise an upper mounting hole arranged on the upper plate of the front auxiliary frame and a lower mounting hole arranged on the lower plate of the front auxiliary frame, the upper mounting hole and the lower mounting hole are correspondingly arranged, and mounting rings are fixedly connected in the upper mounting hole and the lower mounting hole; the vibration absorber is in interference fit with the mounting ring.
Further, the vibration absorber comprises an outer ring, a mass block assembly and rubber, wherein the mass block assembly is positioned in the outer ring, the rubber is used for connecting the mass block assembly and the outer ring, and the inner surface of the outer ring and the outer surface of the mass block assembly are vulcanized into a whole through the rubber.
Furthermore, the mass block assembly comprises an inner ring, a connecting plate welded at one end of the inner ring and a connecting column positioned in the inner ring, wherein one end of the connecting column is welded with the middle part of the connecting plate, the other end of the connecting column extends out of the other end of the inner ring, and the connecting column is provided with an external thread; the mass block assembly further comprises a plurality of mass block monomers and nuts, the mass block monomers are located in the inner ring and matched with the connecting column, and the nuts are matched with the connecting column and used for locking the mass block monomers.
Further, the mass block assembly is an integrally formed ring structure.
Further, the outer ring is made of nylon.
The invention has the beneficial technical effects that:
the mounting hole is formed in the front auxiliary frame, and the vibration absorber is pressed in the mounting hole, so that the driving comfort is improved, the problem of rumbling caused by acceleration is better solved, the vibration absorber is prevented from being directly radiated by a vent pipe, the influence of the vent pipe on the vibration absorber is reduced, and meanwhile, the occupied space of the vibration absorber is small, so that the vibration absorber is not limited by the spatial arrangement of the front auxiliary frame, and the front auxiliary frame is more attractive; because the mounting ring is fixedly connected in the mounting hole of the front auxiliary frame, the vibration absorber is pressed in the mounting ring, so that the vibration absorber is reliably fixed on the front auxiliary frame; in a development state, the total mass of the mass block assembly can be realized by replacing mass block monomers with different weights or adding mass block monomers with different numbers, so that the absorber can be improved according to different vehicle types, the absorber is suitable for different vehicle types, and the development time is shortened; when in mass production, the mass block assembly is of an integrally formed annular structure, so that the installation time is saved, and the installation efficiency is improved.
Drawings
FIG. 1 is a prior art mounting structure for a shock absorber of a front subframe of an automobile;
FIG. 2 is a schematic structural view of the present invention;
FIG. 3 is an exploded view of FIG. 2;
FIG. 4 is a schematic structural view of the front subframe;
FIG. 5 is an enlarged view of portion A of FIG. 4;
FIG. 6 is one of the schematic structural views of the vibration absorber;
FIG. 7 is a cross-sectional view B-B of FIG. 6;
FIG. 8 is a second schematic view of the structure of the vibration absorber;
fig. 9 is a cross-sectional view C-C of fig. 8.
In the figure: 1-an original front auxiliary frame, 2-an original vibration absorber mounting bracket, 3-an original vibration absorber and 4-an exhaust pipe;
5-front auxiliary frame, 6-vibration absorber;
51-front subframe upper plate, 52-front subframe lower plate, 53-mounting ring;
61-outer ring, 62-rubber, 63-mass assembly;
631-inner ring, 632-connecting plate, 633-connecting column, 634-mass single body, 635-nut.
Detailed Description
The invention is described in detail below with reference to the figures and examples.
Referring to fig. 2 to 9, a shock absorber mounting structure for a front subframe of an automobile, including a shock absorber 6 fittingly connected to a front subframe 5, is characterized in that: and the front auxiliary frame 5 is provided with a mounting hole, and the vibration absorber 6 is matched and connected with the mounting hole on the front auxiliary frame 5. The front subframe 5 can analyze the modal frequency thereof through CAE in the design stage, find the position with the maximum vibration response, and the mounting hole is set up in the position with the maximum vibration response of the front subframe 5. The vibration absorber is matched in the mounting hole on the front auxiliary frame, so that the vibration and sound transmitted into the vehicle through the front auxiliary frame can be reduced, the driving comfort is improved, and the problem of rumbling caused by acceleration is better solved; the direct heat radiation of the exhaust pipe to the vibration absorber can be avoided, and the influence of the exhaust pipe on the vibration absorber is reduced; meanwhile, the vibration absorber occupies small space, so that the vibration absorber is not limited by the space arrangement of the front auxiliary frame, and the front auxiliary frame is more attractive.
The front subframe 5 includes a front subframe upper plate 51 and a front subframe lower plate 52; the mounting holes comprise an upper mounting hole arranged on the upper plate 51 of the front subframe and a lower mounting hole arranged on the lower plate 52 of the front subframe, the upper mounting hole and the lower mounting hole are correspondingly arranged, and mounting rings 53 are fixedly connected in the upper mounting hole and the lower mounting hole; the vibration absorber 6 is an interference fit with the mounting ring 53. The upper end part of the mounting ring 53 is positioned in the upper mounting hole and is welded with the front sub-frame upper plate 51 through the outer surface of the upper end part of the mounting ring; the lower end portion of the mounting ring 53 is located in the lower mounting hole and is welded to the front subframe lower plate 52 through the outer surface of the lower end portion thereof; i.e., the mounting ring 53 is welded to the front subframe upper plate 51 and the front subframe lower plate 52, see fig. 4 and 5. The vibration absorber 6 can be reliably fixed to the front subframe 5 by the mounting ring 53.
The vibration absorber 6 comprises an outer ring 61, a mass assembly 63 positioned in the outer ring 61, and rubber 62 connecting the mass assembly 63 and the outer ring 61, wherein the inner surface of the outer ring 61 and the outer surface of the mass assembly 63 are integrally vulcanized through the rubber 62.
The outer ring 61 is made of nylon. The outer ring 61 made of nylon has a certain elasticity, and is press-fitted into the mounting ring 53 of the front subframe upper plate 51 by a press-fitting machine. Make convenient assembling swift, and avoid the bump leveller to drop.
In a development state, the mass block assembly 63 comprises an inner ring 631, a connecting plate 632 welded at one end of the inner ring 631, and a connecting column 633 positioned in the inner ring 631, wherein one end of the connecting column 633 is welded with the middle of the connecting plate 632, the other end of the connecting column 633 extends out of the other end of the inner ring 631, and the connecting column 631 is provided with external threads; the mass assembly 63 further includes a plurality of mass units 634 located inside the inner ring 631 and cooperating with the connecting column 633, and a nut 635 cooperating with the connecting column 631 and locking the plurality of mass units 634. The inner ring 631 and the connecting plate 632 are made of steel, and the inner ring 631 and the outer ring 61 are vulcanized together by the rubber 62. In the whole vehicle development process, the mass block 634 similar to a weight is fixed with the inner ring 631 through the connecting column 633 and the nut 635; the frequency of the vibration absorber 6 can be changed by adding different weights or different numbers of mass units 634 to meet the requirements of different vehicle types. That is, after the problem frequency is known, the total weight of the mass is calculated according to the known stiffness, and the absorber is adjusted quickly by replacing, adding or subtracting the mass unit 634. This way, the vibration absorber can be arranged at an optimal position, and the exhaust pipe can be prevented from radiating directly. All vehicle types can adopt holes with the same diameter and vibration absorbers with the same diameter so as to achieve the purpose of saving cost.
In mass production, the mass block assembly 63 is an integrally formed ring structure. The mass block assembly 63 is made of cast iron mass blocks, that is, after the development is completed, after the weight of the required mass block is determined, the total mass of the inner ring 631, the connecting plate 632, the connecting column 633, the plurality of mass block monomers 634 and the nuts 635 is converted into the cast iron mass block with the same mass, and the weight of the cast iron mass block is adjusted through the size of the hole in the middle of the cast iron mass block. The vibration absorbers 6 in the mass production state are pressed into the front auxiliary frame 5 to be integrally supplied to a production line, so that one station can be reduced, and the assembly time is saved. The outer circle radius of the cast iron mass block in the mass production state is the same as that of the inner circle 631 in the development state, so that the same vulcanizing mold can be adopted in the development state and the mass production state; and the vibration absorbers required by different vehicle types can adopt the same vulcanizing mold, so that a large amount of development cost and time can be saved, and the effect of platformization is achieved.
The mounting structure of the vibration absorber of the front auxiliary frame of the automobile can be used in a platform mode, and the frequency is adjustable. The method can meet the requirements of all butterfly-shaped front auxiliary frames, and can calculate the mass of the mass block required by the vibration absorber according to the problem frequency, thereby shortening the development time; the vibration absorbers and the auxiliary frame are supplied integrally, so that the work of an assembly line can be reduced; the device has the advantages of simple structure, excellent performance, low cost, space saving, strong practicability and the like.
Claims (4)
1. The utility model provides a sub vehicle frame bump leveller mounting structure before car, includes bump leveller (6) of cooperation connection on sub vehicle frame (5) in the front, its characterized in that: the front auxiliary frame (5) is provided with a mounting hole, and the vibration absorber (6) is connected with the mounting hole on the front auxiliary frame (5) in a matching way;
the front auxiliary frame (5) comprises a front auxiliary frame upper plate (51) and a front auxiliary frame lower plate (52); the mounting holes comprise upper mounting holes arranged on an upper plate (51) of the front auxiliary frame and lower mounting holes arranged on a lower plate (52) of the front auxiliary frame, the upper mounting holes and the lower mounting holes are correspondingly arranged, and mounting rings (53) are fixedly connected in the upper mounting holes and the lower mounting holes; the vibration absorber (6) is in interference fit with the mounting ring (53);
the vibration absorber (6) comprises an outer ring (61), a mass block assembly (63) located in the outer ring (61), and rubber (62) connecting the mass block assembly (63) and the outer ring (61), wherein the inner surface of the outer ring (61) and the outer surface of the mass block assembly (63) are integrally vulcanized through the rubber (62).
2. The mounting structure for the vibration absorber of the front subframe of a vehicle as claimed in claim 1, wherein: the mass block assembly (63) comprises an inner ring (631), a connecting plate (632) welded at one end of the inner ring (631), and a connecting column (633) positioned in the inner ring (631), wherein one end of the connecting column (633) is welded with the middle part of the connecting plate (632), the other end of the connecting column extends out of the other end of the inner ring (631), and the connecting column is provided with an external thread; the mass assembly (63) comprises a plurality of mass single bodies (634) which are positioned in the inner ring (631) and matched with the connecting column (633) and nuts (635) which are matched with the connecting column and used for locking the plurality of mass single bodies (634) when in a development state; the mass single bodies (634) are similar to weights, and the frequency of the vibration absorber (6) can be changed by adding different weights or different numbers of mass single bodies (634).
3. The mounting structure of the shock absorbers of the front subframe of the automobile as set forth in claim 1, wherein: the mass block assembly (63) is of an integrally formed annular structure in a mass production state, and the weight of the mass block assembly (63) is obtained by conversion according to the total mass of the developed inner ring (631), the connecting plate (632), the connecting column (633), the plurality of mass block monomers (634) and the nuts (635); the mass block assembly (63) adopts a cast iron mass block; the weight of the cast iron mass block can be adjusted through the size of the holes in the mass block single body or/and the mass block single bodies with different numbers.
4. The mounting structure of the shock absorbers of the front subframe of the automobile as set forth in claim 1, wherein: the outer ring (61) is made of nylon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010349868.8A CN111516606B (en) | 2020-04-28 | 2020-04-28 | Installation structure of vibration absorber of front auxiliary frame of automobile |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010349868.8A CN111516606B (en) | 2020-04-28 | 2020-04-28 | Installation structure of vibration absorber of front auxiliary frame of automobile |
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| CN111516606A CN111516606A (en) | 2020-08-11 |
| CN111516606B true CN111516606B (en) | 2023-03-24 |
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