CN217294663U - Variable cross-section frame assembly - Google Patents
Variable cross-section frame assembly Download PDFInfo
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- CN217294663U CN217294663U CN202220377773.1U CN202220377773U CN217294663U CN 217294663 U CN217294663 U CN 217294663U CN 202220377773 U CN202220377773 U CN 202220377773U CN 217294663 U CN217294663 U CN 217294663U
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- 239000000725 suspension Substances 0.000 claims description 20
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 230000005284 excitation Effects 0.000 abstract description 4
- 238000005452 bending Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000036544 posture Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
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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
Abstract
The utility model provides a variable cross-section frame assembly, which comprises a left longitudinal beam, a right longitudinal beam and a cross beam, wherein the left longitudinal beam and the right longitudinal beam are respectively provided with a first drop section, a first inclined section, a straight section, a second inclined section and a second drop section which are connected in sequence, the first drop section is arranged at the front ends of the left longitudinal beam and the right longitudinal beam, and the height of the upper wing surface of the first drop section is lower than that of the straight section; the second fall section is arranged at the rear ends of the left longitudinal beam and the right longitudinal beam, and the height of the lower wing surface of the second fall section is higher than that of the straight section; the left longitudinal beam and the right longitudinal beam are connected through the cross beam group. The utility model provides a vertical crooked first-order modal frequency of variable cross section frame low, receive whole car impact load and the big problem of road surface excitation influence.
Description
Technical Field
The utility model belongs to the technical field of the automobile manufacturing, especially, relate to a variable cross section frame assembly.
Background
The variable cross-section frame is a frame assembly with a bending part and a wing surface height difference arranged on a longitudinal beam, is applied to meet the requirement of various vehicle types on the difference of the arrangement space and the posture of the whole vehicle by changing the interface position of parts and adjusting the gravity center height of the whole vehicle, and is widely applied to the field of vehicles.
At present, in order to meet different requirements of a whole vehicle, a variable cross-section frame structure is variable, and a unified structural design standard does not exist, so that the problem of low natural frequency generally exists, particularly, under a vertical bending working condition, the first-order modal frequency is low, the influence of impact load transmitted by the whole vehicle and road excitation is large, and the problem of frame cracking is easy to occur under a severe working condition.
In conclusion, how to optimize the structural form of the variable cross-section frame assembly is a problem which needs to be solved urgently in the technical field of automobile manufacturing, so that the first-order modal parameters of the variable cross-section frame assembly are improved while the requirement of a finished automobile is met, and the negative influence on the frame assembly caused by the impact and the road excitation of the finished automobile is reduced.
SUMMERY OF THE UTILITY MODEL
In view of the above shortcomings of the prior art, an object of the present invention is to provide a frame assembly with variable cross-section for solving the problem of poor performance of the first-order modal parameters of the frame assembly with variable cross-section in the prior art and the problem of large adverse effect caused by the impact of the whole vehicle and the excitation of the road surface.
To achieve the above and other related objects, the present invention provides the following technical solutions:
a variable cross-section frame assembly comprises a left longitudinal beam, a right longitudinal beam and a transverse beam group, wherein the left longitudinal beam and the right longitudinal beam are respectively provided with a first fall section, a first inclined section, a straight section, a second inclined section and a second fall section which are sequentially connected, the first fall section is arranged at the front ends of the left longitudinal beam and the right longitudinal beam, the height of the upper wing surface of the first fall section is lower than that of the straight section, and the first inclined section is connected with the straight section; the second fall section is arranged at the rear ends of the left longitudinal beam and the right longitudinal beam, the height of the lower wing surface of the second fall section is higher than that of the straight section, and the second fall section is connected with the straight section through a second inclined section; the left longitudinal beam and the right longitudinal beam are connected through the cross beam group, and the cross beam group is arranged between the left longitudinal beam and the right longitudinal beam in a manner of being perpendicular to the left longitudinal beam and the right longitudinal beam.
Furthermore, the left longitudinal beam and the right longitudinal beam are symmetrically provided with widening sections which protrude towards the outer side of the frame and are used for increasing the engine arrangement space between the left longitudinal beam and the right longitudinal beam, and therefore the arrangement requirement of part of vehicle types on a high-horsepower engine is met.
Furthermore, the front end of the left longitudinal beam is also provided with a third fall section and a third inclined section, the height of the upper wing surface of the third fall section is lower than that of the first fall section, the third inclined section is connected with the first fall section, and the third fall section is used for increasing the arrangement space on the left side of the front end of the vehicle, so that the arrangement requirements of a front end steering system and a cooling system of a part of vehicles are met.
Furthermore, the beam group comprises a first beam, a second beam, a third beam, a fourth beam, a fifth beam, a sixth beam and a seventh beam, wherein the first beam is arranged at the front end of the frame, the seventh beam is arranged at the rear end of the frame, and the second beam, the third beam and the sixth beam are sequentially arranged between the first beam and the seventh beam.
Furthermore, be connected with back suspension plate spring stiff end support on the frame assembly, the fifth crossbeam sets up in back suspension plate spring stiff end support inboard for improve the structural strength of the longeron of back suspension plate spring support department.
Furthermore, the first beam, the third beam, the fifth beam and the seventh beam are groove beams, and the second beam, the fourth beam and the sixth beam are circular tube beams.
Furthermore, the frame assembly is connected with a rear suspension lifting lug, two ends of the sixth cross beam penetrate through the left longitudinal beam and the right longitudinal beam to form a penetrating section, the penetrating section is used for mounting the rear suspension lifting lug, and the structural strength of the longitudinal beam at the rear suspension lifting lug is improved.
The frame assembly is further provided with an inner lining plate, and the inner lining plate is located at the connecting position of the inner sides of the left longitudinal beam and the right longitudinal beam and the connecting position of the second cross beam to the sixth cross beam and is used for connecting the second cross beam to the sixth cross beam, the left longitudinal beam and the right longitudinal beam.
As described above, the utility model discloses following beneficial effect has:
the front ends of the left and right longitudinal beams of the frame assembly are provided with the first fall sections to reduce the height of the upper wing surface, the rear ends of the left and right longitudinal beams are provided with the second fall sections to increase the height of the lower wing surface, the left and right longitudinal beams are connected with the left and right longitudinal beams of the frame through the cross beam group, so that the postures that the upper wing surface of the front end of the frame assembly is low and the lower wing surface of the rear end is high are formed, the integral strength of the frame assembly is excellent while the requirements of the whole vehicle on the gravity center and the arrangement space are met, the CAE (Computer Aided Engineering) result of vertical bending first-order modal frequency reaches over 26Hz, and the frame assembly has the characteristics of strong practicability, strong adaptability, excellent strength and the like.
Drawings
Fig. 1 is an isometric view of an embodiment of the present invention;
fig. 2 is a top view of an embodiment of the present invention;
fig. 3 is a front view of an embodiment of the present invention.
Part number description:
the height adjusting device comprises a left longitudinal beam 1, a right longitudinal beam 2, a cross beam group 3, a first cross beam 31, a second cross beam 32, a third cross beam 33, a fourth cross beam 34, a fifth cross beam 35, a sixth cross beam 36, a seventh cross beam 37, a rear suspension plate spring fixing end support 4, a rear suspension lifting lug 5, a lining plate 6, a height H1 of a first drop height section, a length L11 of a first drop height section, a length L12 of a first inclined section, a height H2 of a second drop height section, a length L21 of a second drop height section, a length L22 of a second inclined section, a height H3 of a third drop height section, a length L31 of a third drop height section, a length L32 of a third inclined section and a height H0 of a straight section.
Detailed Description
The following description is provided for illustrative purposes, and other advantages and features of the present invention will become apparent to those skilled in the art from the following detailed description.
It should be understood that the structure, ratio, size and the like shown in the drawings attached to the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by those skilled in the art, and are not used for limiting the limit conditions that the present invention can be implemented, so that the present invention has no technical essential meaning, and any structure modification, ratio relationship change or size adjustment should still fall within the scope that the technical content disclosed in the present invention can cover without affecting the function that the present invention can produce and the purpose that the present invention can achieve. Meanwhile, the terms such as "upper", "lower", "left", "right", "inner", "outer" and "first", "second", "third", etc. referred to in the present specification are for convenience of description, and are not intended to limit the scope of the present invention, and the changes or adjustments of the relative relationship thereof may be made without substantial technical changes, and the scope of the present invention may be considered to be implemented.
Please refer to fig. 1 to 3. A variable cross-section vehicle frame assembly comprises a left longitudinal beam 1, a right longitudinal beam 2 and a cross beam group 3. The left longitudinal beam 1 and the right longitudinal beam 2 are groove-shaped beams, and flanges are inwards arranged in parallel. The left longitudinal beam 1 and the right longitudinal beam 2 are connected through the transverse beam group 3, and the transverse beam group 3 is arranged between the left longitudinal beam 1 and the right longitudinal beam 2 in a manner of being perpendicular to the left longitudinal beam 1 and the right longitudinal beam 2.
The left longitudinal beam 1 and the right longitudinal beam 2 are respectively provided with a first drop height section, a first inclined section, a straight section, a second inclined section and a second drop height section which are sequentially connected, the first drop height section is arranged at the front ends of the left longitudinal beam 1 and the right longitudinal beam 2, the height of the upper wing surface of the first drop height section is lower than that of the straight section, and the first drop height section is in transitional connection with the straight section through the first inclined section; the second fall section is arranged at the rear ends of the left longitudinal beam 1 and the right longitudinal beam 2, the height of the lower wing surface of the second fall section is higher than that of the straight section, and the second fall section is in transitional connection with the straight section through the second inclined section.
In some embodiments, the left side member 1 and the right side member 2 are further symmetrically provided with a widened section, and the side members of the widened section protrude towards the outer side of the frame assembly, so that the arrangement space between the left side member 1 and the right side member 2 is increased, and the arrangement requirement of a part of vehicle types on a high-horsepower engine is met.
In some embodiments, the front end of the left longitudinal beam 1 is further provided with a third fall section and a third inclined section, the upper airfoil height of the third fall section is lower than that of the first fall section, and the third fall section and the first fall section are in transitional connection through the third inclined section.
In the above embodiment, in the left side member 1 and the right side member 2, the height H1 of the first drop height section is 113mm, the length L11 of the first drop height section is 1156.5mm, and the length L12 of the first inclined section is 848 mm; the height H2 of the second fall section is 140mm, the length L21 of the second fall section is 1436mm, and the length L22 of the second inclined section is 933 mm; the height H0 of the straight section is 175 mm. In other embodiments, the height and length dimensions may be adjusted according to design requirements.
In the above embodiment, the height H3 of the third step height section, the length L31 of the third step height section and the length L32 of the third inclined section are 86mm, 288mm and 200mm, respectively, in the left side member 1. In other embodiments, the height and length dimensions may be adjusted according to design requirements.
The beam group 3 comprises a first beam 31, a second beam 32, a third beam 33, a fourth beam 34, a fifth beam 35, a sixth beam 36 and a seventh beam 37, the first beam 31 connects the front ends of the left longitudinal beam 1 and the right longitudinal beam 2, the seventh beam 37 connects the rear ends of the left longitudinal beam 1 and the right longitudinal beam 2, and the second beam 32, the third beam 33, the fourth beam 34, the fifth beam 35 and the sixth beam 36 are sequentially arranged between the first beam 31 and the seventh beam 37.
Install back suspension plate spring stiff end support 4 on the frame Assembly, the position that fifth crossbeam 35 is connected with left longeron 1, right longeron 2 is located the inboard of the mounted position of back suspension plate spring stiff end support 4, is favorable to improving the frame Assembly's at the mounted position's of back suspension plate spring stiff end support 4 intensity.
In the above embodiment, the first, third, fifth and seventh beams are channel beams, and the second, fourth and sixth beams are tubular beams.
Install rear suspension lug 5 on the frame assembly, the both ends of sixth crossbeam 36 are passed left longeron 1 and right longeron 2 and are formed and wear out the section, wear out the section and pass rear suspension lug 5 simultaneously for with rear suspension lug 5 installation location on the frame assembly, be favorable to improving the structural strength of the longeron of rear suspension lug department.
The inner sides of the left longitudinal beam 1 and the right longitudinal beam 2 are connected with the second cross beam 32, the third cross beam 33, the fourth cross beam 34, the fifth cross beam 35 and the sixth cross beam 36 through the inner lining plates 6, the second cross beam 32 to the sixth cross beam 36 are connected with the left longitudinal beam 1 and the right longitudinal beam 2 through the inner lining plates 6, the assembling difficulty is reduced, and the connecting strength is improved.
To sum up, the utility model provides a variable cross section frame assembly through longeron about the crossbeam group link variable cross section to and set up first drop section and reduce the upper airfoil height about the longeron front end, set up the second drop section and increase lower airfoil height about the longeron rear end, improve frame assembly structural strength, optimized the first-order modal parameter of frame assembly, have characteristics such as the practicality is strong, strong adaptability, intensity is outstanding
The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. It will be apparent to those skilled in the art that modifications and variations can be made to the above-described embodiments without departing from the spirit and scope of the invention, and it is intended that all equivalent modifications and variations be covered by the appended claims without departing from the spirit and scope of the invention.
Claims (8)
1. The utility model provides a variable cross section frame assembly which characterized in that: the left longitudinal beam and the right longitudinal beam are respectively provided with a first fall section, a first inclined section, a straight section, a second inclined section and a second fall section which are sequentially connected, the first fall section is arranged at the front ends of the left longitudinal beam and the right longitudinal beam, and the height of the upper wing surface of the first fall section is lower than that of the straight section; the second fall section is arranged at the rear ends of the left longitudinal beam and the right longitudinal beam, and the height of the lower wing surface of the second fall section is higher than that of the straight section; the left longitudinal beam and the right longitudinal beam are connected through the cross beam group.
2. A variable cross-section vehicle frame assembly as claimed in claim 1, wherein: the left longitudinal beam and the right longitudinal beam are symmetrically provided with widening sections which protrude towards the outer side of the frame and are used for increasing the engine arrangement space between the left longitudinal beam and the right longitudinal beam.
3. A variable cross-section vehicle frame assembly as claimed in claim 1, wherein: the front end of the left longitudinal beam is also provided with a third fall section and a third inclined section, the height of the upper wing surface of the third fall section is lower than that of the first fall section, and the third fall section is connected with the first fall section through the third inclined section.
4. A variable cross-section vehicle frame assembly as claimed in claim 1, wherein: the beam group comprises a first beam, a second beam, a third beam, a fourth beam, a fifth beam, a sixth beam and a seventh beam, wherein the first beam is arranged at the front end of the frame assembly, the seventh beam is arranged at the rear end of the frame assembly, and the second beam, the third beam and the sixth beam are sequentially arranged between the first beam and the seventh beam.
5. A frame assembly with a variable cross-section according to claim 4, characterized in that: the first cross beam, the third cross beam, the fifth cross beam and the seventh cross beam are groove-shaped beams, and the second cross beam, the fourth cross beam and the sixth cross beam are circular tube beams.
6. A variable cross-section frame assembly as claimed in claim 4, wherein: the frame assembly is connected with a rear suspension plate spring fixed end support, and the fifth cross beam is arranged on the inner side of the rear suspension plate spring fixed end support and used for improving the structural strength of the longitudinal beam at the rear suspension plate spring support.
7. A variable cross-section frame assembly as claimed in claim 4, wherein: the frame assembly is connected with a rear suspension lifting lug, two ends of the sixth cross beam penetrate through the left longitudinal beam and the right longitudinal beam to form penetrating sections, and the penetrating sections are used for mounting the rear suspension lifting lug.
8. A variable cross-section frame assembly as claimed in claim 4, wherein: the second cross beam, the third cross beam, the fourth cross beam, the fifth cross beam, the sixth cross beam, the left longitudinal beam and the right longitudinal beam are sequentially arranged on the left side and the right side of the frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220377773.1U CN217294663U (en) | 2022-02-23 | 2022-02-23 | Variable cross-section frame assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220377773.1U CN217294663U (en) | 2022-02-23 | 2022-02-23 | Variable cross-section frame assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217294663U true CN217294663U (en) | 2022-08-26 |
Family
ID=82929193
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220377773.1U Active CN217294663U (en) | 2022-02-23 | 2022-02-23 | Variable cross-section frame assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217294663U (en) |
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2022
- 2022-02-23 CN CN202220377773.1U patent/CN217294663U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240313 Address after: 073099 Dingqu Road, Dingzhou City, Baoding City, Hebei Province Patentee after: HEBEI CHANGAN AUTOMOBILE CO.,LTD. Country or region after: China Address before: 073000 Dingqu Road, Dingzhou City, Baoding City, Hebei Province Patentee before: BAODING CHANGAN BUS MANUFACTURING Co.,Ltd. Country or region before: China |