CN202879226U - Automotive power assembly front-suspension point installation structure - Google Patents
Automotive power assembly front-suspension point installation structure Download PDFInfo
- Publication number
- CN202879226U CN202879226U CN 201220555296 CN201220555296U CN202879226U CN 202879226 U CN202879226 U CN 202879226U CN 201220555296 CN201220555296 CN 201220555296 CN 201220555296 U CN201220555296 U CN 201220555296U CN 202879226 U CN202879226 U CN 202879226U
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- suspension
- crossbeam
- power assembly
- water tank
- connection structure
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Abstract
An automotive power assembly front-suspension point installation structure is used for solving the installation problem of front suspension of a vehicle-mounted engine. The automotive power assembly front-suspension point installation structure comprises a front-suspension installation cross beam and a water tank lower cross beam. The height of a smallest section of the front-suspension installation cross beam along the vehicle body height direction is H. The middle of the front-suspension installation cross beam is provided with a front-suspension installation seat, and two ends of the water tank lower cross beam are fixed on the front-suspension installation cross beam. A connection structure is arranged between the front-suspension installation cross beam and the water tank lower cross beam. The automotive power assembly front-suspension point installation structure is simple in structure, convenient to assemble, stable in property, and capable of significantly improving the vibration isolation performance of the automotive power assembly front-suspension point installation structure and improving the vibration and harshness (VAH) characteristic of a vehicle.
Description
Technical field
The utility model relates to a kind ofly installs the automobile power assembly front-suspension point mounting structure that crossbeam and water tank cross sill couple together with automobile engine front mounting, belongs to the vehicle body structure technical field.
Background technology
Along with the progress of automobile research and development technology and improving constantly of people's living standard, the customer is also more and more higher to the requirement of vehicle ride comfort.The NVH performance of vehicle is the key factor that affects its traveling comfort, the occupant in automobile all senses of touch and auditory perception and vibrate the category that caused intensity and life problems all belong to the NVH characteristic research by auto parts and components, as the power assembly suspension system of the main vibration isolation element of vehicle body, its architectural feature and arrangement are to car load NVH performance important.
The method of improving at present the anti-vibration performance that suspends mainly contains to reduce and suspends dynamic stiffness and improve two kinds of forms of body side attachment point dynamic stiffness.And the dynamic stiffness that reduces simply to suspend often causes the dynamic assembly constraint to weaken, resist the problems such as bump, tired endurance reduction.Therefore the lifting of body side dynamic stiffness has become the Main Means of optimizing the suspension system anti-vibration performance, because front-suspension is installed on the front auxiliary car frame front cross beam midway location, therefore general rigidity (strengthen section of beam, increase the crossbeam panel thickness or add brace panel etc.) or the method for interpolation front cross rail bump leveller that adopts the raising front-suspension that crossbeam is installed improved vehicle NVH performance.But there is following defective in said method: the one, and the section of beam increase can affect body shape, plate thickens makes the body quality increase, add brace panel can make cost rise; The 2nd, utilize bump leveller can only eliminate structure single-frequency vibration peak, improve effect unsatisfactory, because there is rubber structure in bump leveller, the absorbing frequency stability is relatively poor simultaneously.
The utility model content
The purpose of this utility model is the drawback for prior art, provide a kind of simple in structure, be easy to assemble, stable performance, can improve front-suspension mounting structure anti-vibration performance, improve the automobile power assembly front-suspension point mounting structure of vehicle NVH characteristic.
Problem described in the utility model realizes with following technical proposals:
A kind of automobile power assembly front-suspension point mounting structure, it by front-suspension crossbeam is installed and the water tank cross sill forms, described front-suspension installation crossbeam is H along the height dimension of height of the carbody direction smallest cross-sectional, at front-suspension the crossbeam middle part is installed and is provided with the front-suspension mounting seat, described water tank cross sill two ends are fixed on front-suspension and install on the crossbeam, install between crossbeam and the water tank cross sill at front-suspension connection structure is set.
Above-mentioned automobile power assembly front-suspension point mounting structure, described connection structure is positioned near the front-suspension mounting seat, and it is plate structure, in connection structure waling is set.
Above-mentioned automobile power assembly front-suspension point mounting structure, described connection structure one end and front-suspension are installed the fixing assembling of crossbeam, and the other end and water tank cross sill adopt detachable fixed connection structure assembling.
Above-mentioned automobile power assembly front-suspension point mounting structure, described front-suspension are installed crossbeam along height of the carbody direction smallest cross-sectional height dimension H 〉=30mm.
The utility model according to the lowest vibration model frequency required optimal design front-suspension the section of beam minimum size is installed, avoided because problems such as the oversize moulding that causes, quality, have the advantages that weight is little, cost is low, front-suspension installation crossbeam assembly quality is 6.5Kg after the utility model optimization, weight reducing 18.75%; The utility model is installed between crossbeam and the water tank cross sill at front-suspension connection structure is set, but make dynamic assembly front-suspension mounting structure equal establishment vibration peak in the 80Hz-180Hz wide frequency range, improve the dynamic stiffness of front-suspension mounting structure, remedied and adopted the bump leveller scheme can only eliminate the defective of single-frequency vibration peak, the labile factor of also having avoided the bump leveller elastomeric material to cause simultaneously; The utility model has also improved water tank cross sill and front-suspension installation crossbeam by connection structure quiet rigidity has realized integral structure rigidity uniformization.In a word, simple in structure, easy to assembly, the stable performance of the utility model, can significantly improve automobile power assembly front-suspension mounting structure anti-vibration performance, improve vehicle NVH characteristic.
Description of drawings
The utility model is described in further detail below in conjunction with accompanying drawing.
Fig. 1 is structural representation of the present utility model;
Fig. 2 is that the A of Fig. 1 is to view;
Fig. 3 is that front-suspension is installed the beam structure schematic diagram;
Fig. 4 is the connection structure schematic diagram.
Each label is among the figure: 1, front-suspension is installed crossbeam, 1-1, front-suspension mounting seat, 2, the water tank cross sill, 3, connection structure, 3-1, waling.
The specific embodiment
Referring to Fig. 1, Fig. 2, Fig. 3, Fig. 4, the utility model by front-suspension crossbeam 1 is installed and water tank cross sill 2 forms, described front-suspension installation crossbeam 1 is H along the height dimension of height of the carbody direction smallest cross-sectional, at front-suspension crossbeam 1 middle part is installed and is provided with front-suspension mounting seat 1-1, described water tank cross sill 2 two ends are fixed on front-suspension and install on the crossbeam 1, install between crossbeam 1 and the water tank cross sill 2 at front-suspension connection structure 3 is set; Described connection structure 3 is positioned near the front-suspension mounting seat 1-1, and it is plate structure, in connection structure 3 waling 3-1 is set; Connection structure 3 one ends and front-suspension are installed crossbeam 1 spot welding assembling, and the other end and water tank cross sill 2 adopt detachable fixed connection structure assembling.
Referring to Fig. 3, front-suspension of the present utility model is installed crossbeam along height of the carbody direction smallest cross-sectional height dimension H 〉=30mm.
Referring to Fig. 1, Fig. 2, Fig. 3, Fig. 4, below in conjunction with specific embodiment principle of design of the present utility model is described: the present embodiment according to the lowest vibration model frequency required optimal design front-suspension the section of beam minimum size is installed, avoided because problems such as the oversize moulding that causes, quality; The present embodiment is installed between crossbeam 1 and the water tank cross sill 2 at front-suspension connection structure 3 is set, but make dynamic assembly front-suspension mounting structure equal establishment vibration peak in the 80Hz-180Hz wide frequency range, improve the dynamic stiffness of front-suspension mounting structure, remedied and adopted the bump leveller scheme can only eliminate the defective of single-frequency vibration peak, the fugitiveness of also having avoided the bump leveller material to cause simultaneously; The present embodiment has also improved water tank cross sill and front-suspension installation crossbeam by connection structure 3 quiet rigidity has realized integral structure rigidity uniformization.
The specific design step of the present embodiment is:
One, front-suspension is installed Z-direction (height of the carbody direction) size design of crossbeam 1
Theoretical according to vibration, calculate the constraint mode that front-suspension is installed crossbeam 1 initial configuration, and judge that whether Z-direction single order mode of flexural vibration frequency is near 250Hz.If do not satisfy (undue satisfied) frequency requirement, adjusting is installed the Z-direction size of crossbeam 1 or left and right sides restrained end is carried out the part strengthen.
Design considerations: the constraint model frequency target making that front-suspension is installed crossbeam 1 initial configuration be according to quadruple cylinder engine when the maximum speed of revolution 6000r/min, main exciting frequency is second order 200Hz, consider simultaneously the factor in mode stage, delivery attitude truncation function 1.25, crossbeam single order Z-direction mode of flexural vibration frequency should be not less than 250Hz so, by a few money front-suspensions being installed crossbeam relevant position parameter comparison, final definite: front-suspension is installed crossbeam Z-direction smallest cross-sectional height dimension H 〉=30mm.
Two, front-suspension installation crossbeam 1 is determined with water tank cross sill 2 connection locations
The maximum district of Z-direction single order mode of flexural vibration amplitude of crossbeam 1 is installed according to above-mentioned modal analysis result identification front-suspension.Distinguishing near the amplitude maximum, and with front-suspension the position of interfering be not installed and adds connection structure 3, for the connection front-suspension crossbeam 1 and water tank cross sill 2 are being installed.
Design considerations: because connection structure 3 mainly is for the suspend vibrational energy at attachment point place of transmission, so it should be positioned near the attachment point that suspends and should install near front-suspension the weakness zone of intensity of crossbeam 1.Determine through front-suspension is installed crossbeam 1 structural analysis: connection structure 3 is positioned near the front-suspension mounting seat 1-1.
Three, front-suspension is installed X-direction (length over ends of body direction) structure design of crossbeam 1 and water tank cross sill 2 connection structures 3
Connection structure 3 is selected plate structure, this structure should have enough Z-direction bending stiffnesies, therefore be provided with waling 3-1 structure at plate, connection structure 3 is installed crossbeam 1 with front-suspension and is adopted spot welding to be connected, solder joint is at least two rows, two row's solder joint X-direction spans are as far as possible large, and connection structure 3 is connected to water tank cross sill 2 and is spirally connected, so that dismounting.
Design considerations: the function of connection structure 3 is to connect to suspend crossbeam 1 and water tank cross sill 3 are installed, and the partial vibration energy of crossbeam 1 can be passed on the water tank cross sill 2, so connection structure 3 must guarantee the bending stiffness of Z-direction.Simultaneously, suspend install crossbeam in handling process for preventing that connection structure from deforming, resistance to bending that also must assurance connection structure 3.Therefore connection structure 3 has adopted double solder joint to be connected between the installation crossbeam 1 with suspending.Compare proof by double solder joint is connected with single solder joint connection structure, double solder joint connection structure energy transfer function obviously is better than single solder joint connection structure.
Four, the Y-direction of connection structure 3 (width over sides of car body direction) size is regulated
Select the Y-direction original dimension (suggestion 150mm) of connection structure 3, set up simple and easy finite element structure, the proof scheme feasibility.Discontented if (undue satisfied) sufficient dynamic stiffness requirement, adjustment connecting structure Y-direction size (the suggestion regulated quantity is 30mm/ time), and finally determine the Y-direction size.
Claims (4)
1. automobile power assembly front-suspension point mounting structure, it is characterized in that, it by front-suspension crossbeam (1) is installed and water tank cross sill (2) forms, described front-suspension installation crossbeam (1) is H along the height dimension of height of the carbody direction smallest cross-sectional, at front-suspension crossbeam (1) middle part is installed and is provided with front-suspension mounting seat (1-1), described water tank cross sill (2) two ends are fixed on front-suspension and install on the crossbeam (1), install between crossbeam (1) and the water tank cross sill (2) at front-suspension connection structure (3) is set.
2. a kind of automobile power assembly front-suspension point mounting structure according to claim 1, it is characterized in that, described connection structure (3) is positioned near the front-suspension mounting seat (1-1), and it is plate structure, in connection structure (3) waling (3-1) is set.
3. a kind of automobile power assembly front-suspension point mounting structure according to claim 2, it is characterized in that, described connection structure (3) one ends and front-suspension are installed the fixing assembling of crossbeam (1), and the other end and water tank cross sill (2) adopt detachable fixed connection structure assembling.
4. a kind of automobile power assembly front-suspension point mounting structure according to claim 3 is characterized in that, described front-suspension is installed crossbeam (1) along height of the carbody direction smallest cross-sectional height dimension H 〉=30mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220555296 CN202879226U (en) | 2012-10-28 | 2012-10-28 | Automotive power assembly front-suspension point installation structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220555296 CN202879226U (en) | 2012-10-28 | 2012-10-28 | Automotive power assembly front-suspension point installation structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202879226U true CN202879226U (en) | 2013-04-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220555296 Expired - Fee Related CN202879226U (en) | 2012-10-28 | 2012-10-28 | Automotive power assembly front-suspension point installation structure |
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| CN (1) | CN202879226U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103738152A (en) * | 2013-12-18 | 2014-04-23 | 奇瑞汽车股份有限公司 | Reinforcing structure of suspension installation points for automobile |
-
2012
- 2012-10-28 CN CN 201220555296 patent/CN202879226U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103738152A (en) * | 2013-12-18 | 2014-04-23 | 奇瑞汽车股份有限公司 | Reinforcing structure of suspension installation points for automobile |
| CN103738152B (en) * | 2013-12-18 | 2016-03-16 | 奇瑞汽车股份有限公司 | A kind of automobile suspension attachment point strengthens structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130417 Termination date: 20201028 |