CN104842915A - Back lower protection device, protection cross beam thereof and reinforcement method thereof - Google Patents
Back lower protection device, protection cross beam thereof and reinforcement method thereof Download PDFInfo
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- CN104842915A CN104842915A CN201410796252.XA CN201410796252A CN104842915A CN 104842915 A CN104842915 A CN 104842915A CN 201410796252 A CN201410796252 A CN 201410796252A CN 104842915 A CN104842915 A CN 104842915A
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Abstract
The invention discloses a back lower protection device, a protection cross beam thereof and a reinforcement method thereof; and a triangular section structure (2) is formed on the cross section of the protection cross beam (1). The reinforcement method comprises connecting a reinforcing plate to a cross beam body of the protection cross beam so as to form the triangular section structure on the cross section of the protection cross beam. As the triangular section structure is formed on the cross section of the protection cross beam, the structural strength and the stability of the protection cross beam can be effectively enhanced through the triangular stability.
Description
Technical field
The present invention relates to the reinforcement field of protecting device for rear lower part, particularly, relate to a kind of protecting device for rear lower part and protection crossbeam, and protection crossbeam add strong method.
Background technology
At present, auto-industry high speed development, the safety performance of vehicle has become the focus of people's growing interest, and especially the problem of knocking into the back of dolly and truck is an importance of crisis occupant safety.In order to improve the safety of arteries of communication, national standard body has revised GB11567.2-2011 " automobile and trailer rear lower requirement of shelter " further in 2011, enhance the technical requirements of commercial car protecting device for rear lower part.
How solving the collision safety compatibling problem that dolly and truck knock into the back, is the important topic of current collision safety development and Design.Protecting device for rear lower part is the important effective means solving truck collision compatibility issue, but how to adopt limited material, and the collision safety performance simultaneously improving Rear Underrun Protection Devices becomes a crucial technical problem.
At present, the protection crossbeam of existing protecting device for rear lower part is mostly non-enclosed structure, bending resistance, anti-torsion poor-performing, require to have to adopt increase structure material thickness, adopt the modes such as double-deck C based plate laminating to form C-type steel or rhs-structure to meet collision safety performance, but effect is not remarkable, further increases the cost designed and developed on the contrary.Thus the popularization of the protecting device for rear lower part of existing vehicle is restricted, and it is low that the protective device after damage changes qualification rate, rarely has situation up to standard, cause severe compromise to arteries of communication.
Therefore, wish a kind of protecting device for rear lower part, the requirement of collision safety performance can be met, existing cost can be reduced simultaneously
Summary of the invention
An object of the present invention is to provide a kind of protection crossbeam of protecting device for rear lower part, structural strength and the stability of this protection crossbeam are high, can meet the requirement of collision safety performance, and cost are lower.
Another object of the present invention is to provide a kind of protecting device for rear lower part, and this protecting device for rear lower part uses protection crossbeam provided by the invention.
What another object of the present invention was to provide a kind of protection crossbeam of protecting device for rear lower part adds strong method, and it is simple that this adds strong method, can promote structural strength and the stability of protection crossbeam when low cost.
To achieve these goals, the invention provides a kind of protection crossbeam of protecting device for rear lower part, the cross-sectional plane of described protection crossbeam is formed with triangular cross-sectional configuration.
Preferably, described protection crossbeam comprises cross-beam body and is connected to the brace panel on this cross-beam body, and described brace panel and described cross-beam body form described triangular structure.
Preferably, described cross-beam body is formed as the tubular structure with closed cross-sectional plane.
Preferably, described brace panel is formed as waveform bending structure, and starting point, the terminal of this waveform bending structure are connected with described cross-beam body respectively with flex point.
Preferably, described cross-beam body has square-section, described brace panel is two sectional type bending structure, the described starting point of this two sectional type bending structure and terminal are connected to the homonymy corner of described square-section, described flex point is connected on the limit of described square-section opposite side, is formed with three described triangular cross-sectional configurations to make the cross-sectional plane of described protection crossbeam.
Preferably, described brace panel and described cross-beam body are welded to each other.
According to a further aspect in the invention, provide a kind of protecting device for rear lower part, the connection bracket comprising protection crossbeam and be connected on this protection crossbeam, described protection crossbeam is the invention provides described protecting device for rear lower part.
Preferably, the sidewall that described cross-beam body is arranged towards rear is described triangular cross-sectional configuration.
In accordance with a further aspect of the present invention, what provide a kind of protection crossbeam of protecting device for rear lower part adds strong method, this adds connection reinforcement plate on cross-beam body that strong method is included in described protection crossbeam, is formed with triangular cross-sectional configuration to make the cross-sectional plane of described protection crossbeam.
Preferably, designing described cross-beam body is the tubular structure with closed section, and is welded in this tubular structure by described brace panel.
By technique scheme, because the cross-sectional plane protecting crossbeam is formed with triangular cross-sectional configuration, by leg-of-mutton stability, structural strength and the stability of protection crossbeam effectively can be promoted.
Other features and advantages of the present invention are described in detail in detailed description of the invention part subsequently.
Accompanying drawing explanation
Accompanying drawing is used to provide a further understanding of the present invention, and forms a part for specification sheets, is used from explanation the present invention, but is not construed as limiting the invention with detailed description of the invention one below.In the accompanying drawings:
Fig. 1 is the perspective view of the protecting device for rear lower part that the preferred embodiment for the present invention provides;
Fig. 2 is the cross-sectional structure schematic diagram of the protection crossbeam that the preferred embodiment for the present invention provides.
Description of reference numerals
1 protection crossbeam 2 triangular cross-sectional configuration
3 connection brackets
11 cross-beam body 12 brace panels
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.Should be understood that, detailed description of the invention described herein, only for instruction and explanation of the present invention, is not limited to the present invention.
In the present invention, when not doing contrary explanation, the noun of locality protecting device for rear lower part as normally provided by the invention in " forward and backward " used the situation of normal vehicle operation applied undefined, " inside and outside " then refers to the interior and outer of corresponding component profile.In addition, mentioned in the present invention " cross-sectional plane " is the cross section of the protection crossbeam along the axis intercepting perpendicular to protection crossbeam; " triangle ", " rectangle " not only comprise triangle, the rectangular shape of standard, also comprise subtriangular, the rectangular shape with the distortion such as fillet, arc-shaped side.
As depicted in figs. 1 and 2, the invention provides a kind of protecting device for rear lower part and protection crossbeam thereof, the connection bracket 3 that protecting device for rear lower part comprises protection crossbeam 1 and is connected on this protection crossbeam, wherein connection bracket 3 be generally two and have the fastener hole be connected with vehicle frame, the present invention does not limit this.In order to realize object of the present invention, the cross-sectional plane of protection crossbeam 1 is formed with triangular cross-sectional configuration 2.Therefore, by leg-of-mutton stability, effectively can increase the bending resistant section coefficient of protection crossbeam, then promote bending resistance and the anti-torsion load-carrying capacity of the protection crossbeam 1 of protecting device for rear lower part, thus promote structural strength and the stability of protection crossbeam 1.
It should be noted that, the embodiment that can realize this technical conceive has multiple, the molding mode, arrangement etc. of such as triangular cross-sectional configuration, the present invention for convenience of description, in this introduction preferred implementation wherein, this preferred implementation, only for illustration of the present invention, is not limited to the present invention.
In a preferred embodiment of the invention, in order to form this triangular cross-sectional configuration 2 in the mode of low cost, what can adopt the protection crossbeam of protecting device for rear lower part provided by the invention adds strong method, this adds connection reinforcement plate 12 on cross-beam body 11 that strong method is included in protection crossbeam, is formed with triangular cross-sectional configuration to make the protecting cross-sectional plane of crossbeam 1.Particularly, protection crossbeam 1 comprises cross-beam body 11 and is connected to the brace panel 12 on this cross-beam body 11, namely forms triangular cross-sectional configuration 2 by brace panel 12 and cross-beam body 11.More preferably, by welding manner, brace panel 12 and cross-beam body 11 can be connected as one structure, thus make the intensity of protecting crossbeam 1 better.Difference according to welding condition limits, and at least requires to realize welding with brace panel 12 at the two ends of protection crossbeam 1, is preferably continuous welding process.In other embodiments, this protection crossbeam 1 with triangular cross-sectional configuration 2 also can be one-body molded by other technology modes, also should drop in protection scope of the present invention for this type of mode of texturing.
Further, cross-beam body 11 provided by the invention is formed as the tubular structure with closed cross-sectional plane, such as square tube or pipe, the cross-sectional plane of cross-beam body 11 can be made like this to form closed-loop, and this cross-sectional plane closed can be divided into multiple triangular structure by brace panel 12, this cross-beam body is designed to the tubular structure with closed section, and brace panel 12 is welded in this tubular structure, adds strong method, leg-of-mutton stability can be utilized preferably to improve the shock resistance of protection crossbeam 1.
In order to form multiple triangular structure, preferably, brace panel 12 is formed as waveform bending structure, and starting point, the terminal of this waveform bending structure are connected with cross-beam body 11 respectively with flex point.Like this, the cross-sectional plane of tubular structure can be divided into the triangular cross-sectional configuration 2 of adjacent layout successively, make the structure of protecting crossbeam 1 more stable.
Particularly, as a kind of embodiment, as shown in Figure 2, cross-beam body 11 has square-section, brace panel 12 is two sectional type bending structure, the starting point of this two sectional type bending structure and terminal are connected to the homonymy corner of square-section, and flex point is connected on the limit of the square-section opposite side relative with this usual turning, are formed with three triangular cross-sectional configurations 2 to make the cross-sectional plane protecting crossbeam 1.Thus the reinforcement of protection crossbeam 1 is realized with minimum cost and most convenient manner, the cross-sectional plane of the protection crossbeam 1 that these three triangular cross-sectional configurations 2 form has higher protection intensity.Wherein preferably, will can have the base of the intermediate triangle of two sectional type bending structure in use, the limit that namely cross-beam body 11 provides is arranged towards rear simultaneously, to bear the impact load from rear.This using triangular cross-sectional configuration 2 while as the arrangement bearing impact load, be beneficial to most and play the stability of triangular structure.That is, in use, structural strength and the stability of protection crossbeam 1 can be promoted further.Wherein in order to selection is convenient, preferably, cross-beam body 11 is square tube, and brace panel 12 is angle steel.Therefore by by the two weld together, at lower cost and more conveniently mode protection crossbeam 1 provided by the invention can be realized.
To sum up, the requirement of multiple crash survivability can be met by the thickness of adjustment brace panel 12 and arrangement in the present invention, structural strength and the stability of the protection crossbeam of protecting device for rear lower part can be promoted at lower cost easily, improving in automotive crash safety compatibility, effectively can promote the bending resistance of protection crossbeam, torque resistant performance, economic and practical is good, has higher industry promotional value.
Below the preferred embodiment of the present invention is described in detail by reference to the accompanying drawings; but; the present invention is not limited to the detail in above-mentioned embodiment; within the scope of technical conceive of the present invention; can carry out multiple simple variant to technical scheme of the present invention, these simple variant all belong to protection scope of the present invention.
It should be noted that in addition, each concrete technical characteristic described in above-mentioned detailed description of the invention, in reconcilable situation, can be combined by any suitable mode, in order to avoid unnecessary repetition, the present invention illustrates no longer separately to various possible array mode.
In addition, also can carry out combination in any between various different embodiment of the present invention, as long as it is without prejudice to thought of the present invention, it should be considered as content disclosed in this invention equally.
Claims (10)
1. a protection crossbeam for protecting device for rear lower part, is characterized in that, the cross-sectional plane of described protection crossbeam (1) is formed with triangular cross-sectional configuration (2).
2. protection crossbeam according to claim 1, it is characterized in that, described protection crossbeam (1) comprises cross-beam body (11) and is connected to the brace panel (12) on this cross-beam body (11), and described brace panel (12) and described cross-beam body (11) form described triangular cross-sectional configuration (2).
3. protection crossbeam according to claim 2, is characterized in that, described cross-beam body (11) is formed as the tubular structure with closed cross-sectional plane.
4. protection crossbeam according to claim 3, is characterized in that, described brace panel (12) is formed as waveform bending structure, and starting point, the terminal of this waveform bending structure are connected with described cross-beam body (11) respectively with flex point.
5. protection crossbeam according to claim 4, it is characterized in that, described cross-beam body (11) has square-section, described brace panel (12) is two sectional type bending structure, the described starting point of this two sectional type bending structure and terminal are connected to the homonymy corner of described square-section, described flex point is connected on the limit of described square-section opposite side, is formed with three described triangular cross-sectional configurations (2) to make the cross-sectional plane of described protection crossbeam (1).
6. according to the protection crossbeam in claim 2-5 described in any one, it is characterized in that, described brace panel (12) and described cross-beam body (1) are welded to each other.
7. a protecting device for rear lower part, the connection bracket (3) comprising protection crossbeam (1) and be connected on this protection crossbeam (1), it is characterized in that, described protection crossbeam (1) is for according to the protecting device for rear lower part in claim 1-6 described in any one.
8. protecting device for rear lower part according to claim 7, is characterized in that, sidewall that described cross-beam body (1) is arranged towards rear is described triangular cross-sectional configuration.
9. protecting device for rear lower part protection crossbeam add a strong method, it is characterized in that, this adds connection reinforcement plate on cross-beam body that strong method is included in described protection crossbeam, is formed with triangular cross-sectional configuration to make the cross-sectional plane of described protection crossbeam.
10. according to claim 9ly add strong method, it is characterized in that, designing described cross-beam body is the tubular structure with closed section, and is welded in this tubular structure by described brace panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410796252.XA CN104842915A (en) | 2014-12-18 | 2014-12-18 | Back lower protection device, protection cross beam thereof and reinforcement method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410796252.XA CN104842915A (en) | 2014-12-18 | 2014-12-18 | Back lower protection device, protection cross beam thereof and reinforcement method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN104842915A true CN104842915A (en) | 2015-08-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410796252.XA Pending CN104842915A (en) | 2014-12-18 | 2014-12-18 | Back lower protection device, protection cross beam thereof and reinforcement method thereof |
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| Country | Link |
|---|---|
| CN (1) | CN104842915A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010006278A (en) * | 2008-06-27 | 2010-01-14 | Press Kogyo Co Ltd | Underrun protector of vehicle |
| CN202138325U (en) * | 2011-06-16 | 2012-02-08 | 镇江先锋汽车零部件有限公司 | Inner support for automobile bumper |
| CN203020241U (en) * | 2012-12-19 | 2013-06-26 | 北汽福田汽车股份有限公司 | Automobile rear protective device |
| CN203318336U (en) * | 2013-06-20 | 2013-12-04 | 东风实业(十堰)车辆有限公司 | Protective device for rear part of truck |
-
2014
- 2014-12-18 CN CN201410796252.XA patent/CN104842915A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010006278A (en) * | 2008-06-27 | 2010-01-14 | Press Kogyo Co Ltd | Underrun protector of vehicle |
| CN202138325U (en) * | 2011-06-16 | 2012-02-08 | 镇江先锋汽车零部件有限公司 | Inner support for automobile bumper |
| CN203020241U (en) * | 2012-12-19 | 2013-06-26 | 北汽福田汽车股份有限公司 | Automobile rear protective device |
| CN203318336U (en) * | 2013-06-20 | 2013-12-04 | 东风实业(十堰)车辆有限公司 | Protective device for rear part of truck |
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Application publication date: 20150819 |
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