CN103158771A - Design method of three-section lap joint frame assembly of two-step city bus - Google Patents
Design method of three-section lap joint frame assembly of two-step city bus Download PDFInfo
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- CN103158771A CN103158771A CN 201110408851 CN201110408851A CN103158771A CN 103158771 A CN103158771 A CN 103158771A CN 201110408851 CN201110408851 CN 201110408851 CN 201110408851 A CN201110408851 A CN 201110408851A CN 103158771 A CN103158771 A CN 103158771A
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- section frame
- side rail
- longitudinal beams
- chassis side
- stage casing
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- 238000000034 method Methods 0.000 title claims abstract description 11
- 230000000712 assembly Effects 0.000 claims description 6
- 238000000429 assembly Methods 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003197 gene knockdown Methods 0.000 description 1
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Abstract
The invention relates to a design method of a three-section lap joint frame assembly of a two-step city bus. The frame assembly of the design method comprises a front section frame module, a middle section frame module and a rear section frame module. The cross sections of front section frame longitudinal beams on two sides of the front section frame module are in a Z-shaped structure, and the cross sections of middle section frame longitudinal beams on two sides of the middle section frame module and the cross sections of rear section frame longitudinal beams on two sides of the rear section frame module are respectively in an n-shaped structure. One ends of the front section frame longitudinal beams are arranged at the front ends of the middle section frame longitudinal beams, the front section frame longitudinal beams and the middle section frame longitudinal beams are integrally connected through bolt connecting pieces, and the vertical faces of the front section frame longitudinal beams and the middle section frame longitudinal beams of the connecting portion are fastened on a connecting plate I through bolt connecting pieces. The front ends of the rear section frame longitudinal beams are arranged at the rear ends of the middle section frame longitudinal beams, the rear section frame longitudinal beams and the middle section frame longitudinal beams are integrally connected through bolt connecting pieces, and the vertical faces of the rear section frame longitudinal beams and the middle section frame longitudinal beams of the connecting portion are fastened on a connecting plate II through bolt connecting pieces. The vertical faces are planes which are perpendicular to a horizontal plane.
Description
Technical field
The present invention relates to a kind of vehicle frame of passenger vehicle, particularly the method for designing of three sections overlap joint frame assemblys of a kind of two-stage stepping city bus.
Background technology
When the city bus floor level drops to 600mm by 900mm, floor level has descended 33%, the time of getting on and off can be saved more than 50%, and therefore, (floor level 600mm-550mm) passenger vehicle all has wide market outlook in large, medium and small city to two-stage stepping city at home.In order to satisfy the technical requirements of two-stage stepping city bus chassis special, now need the frame assembly of design city bus chassis, frame assembly adopts the modularization thinking to design.
Former vehicle frame employing riveted joint or welded structure are not easy to strange land assembling and transportation, and it is large that difficulty is controlled greatly in the welded frame distortion.
Summary of the invention
Technical matters to be solved by this invention is: the method for designing of three sections overlap joint frame assemblys of a kind of two-stage stepping city bus of development and Design, the frame assembly that designs by the method can satisfy the reasonable Arrangement requirement of each system of chassis, be convenient to again realize seriation, the modular design on chassis, effectively increased the passenger zone area of low floor simultaneously; Reduce manufacturing cost, vehicle frame weight is greatly reduced, front axle place passenger passageway increases greatly, is convenient to again strange land transportation and assembling that chassis frame is realized CKD simultaneously.Wherein, CKD (Completely Knock Down) is completely knocked-down assembling, that is: a kind of final assembly, the i.e. mode of production of completely knocked-down assembling.
The technical solution adopted for the present invention to solve the technical problems is: the method for designing that designs three sections overlap joint frame assemblys of a kind of two-stage stepping city bus, it is characterized in that: its design frame assembly comprises front section bicycle frame module, stage casing vehicle frame module, back segment vehicle frame module, the cross-sectional plane of the front section bicycle frame longeron of described front section bicycle frame module both sides is " Z " shape structure, and the cross-sectional plane of the back segment chassis side rail of the stage casing chassis side rail of vehicle frame module both sides, described stage casing and back segment vehicle frame module both sides is respectively " ［ " shape structure; One end of front section bicycle frame longeron is placed on the front end of stage casing chassis side rail, is bolted part and connects as one, and the front section bicycle frame longeron of this junction and the vertical surface of stage casing chassis side rail are bolted part and are fastened on the connecting panel I; The front end of back segment chassis side rail is placed on the rear end of stage casing chassis side rail, is bolted part and connects as one, and the stage casing chassis side rail of this junction and the vertical surface of back segment chassis side rail are bolted part and are fastened on the connecting panel II; Wherein, described vertical surface is the plane vertical with horizontal surface.
Described back segment chassis side rail has an arc convex at rear shaft center's line place.
The invention has the beneficial effects as follows, three sections overlap joint frame assembly structures of the designed two-stage stepping city bus of the present invention adopt modular construction, and each section chassis side rail adopts the connection structure of bolt nut structure.The frame assembly structure is divided into: front section bicycle frame module, stage casing vehicle frame module, back segment vehicle frame module.The longeron of front root module adopts " Z " and " unitized construction of ［ " shape, stage casing adopt " ［ " shape structure, the longeron employing " unitized construction of ［ " shape and " Ω " shape of back segment vehicle frame module.Frame assembly structure of the present invention has namely satisfied the reasonable Arrangement requirement of each system of chassis, is convenient to again realize seriation, the modular design on chassis, has effectively increased the passenger zone area of low floor simultaneously; After adopting this programme, the manufacturing cost of each section of vehicle frame reduces greatly, vehicle frame weight greatly reduces, and front axle place passenger passageway increases greatly, and each section chassis side rail adopts the connection structure of bolt nut structure to be convenient to again strange land transportation and assembling that chassis frame is realized CKD simultaneously.
Description of drawings
The present invention is further illustrated below in conjunction with embodiment, but not as a limitation of the invention.
Fig. 1 is three sections overlap joint frame assembly structural front view of two-stage stepping city bus of the embodiment of the present invention;
Fig. 2 is the birds-eye view of Fig. 1;
The connection mode front view of Fig. 3 root module that is Fig. 1 before the A place and middle root module;
Fig. 4 is the left view of Fig. 3;
The connection mode front view of Fig. 5 root module that is Fig. 1 in the B place and rear root module;
Fig. 6 is the left view of Fig. 5.
In figure: 1, front section bicycle frame module; 2, stage casing vehicle frame module; 3, back segment vehicle frame module; 4, front section bicycle frame longeron; 5, connecting panel I; 6, bolt connection piece; 7, stage casing chassis side rail; 8, back segment chassis side rail; 9, connecting panel II; 10; The front axle center line; 11, rear shaft center's line.
Specific embodiment
The structure that is not described in detail in an embodiment, its structure is identical with existing known structure.
Embodiment 1
As depicted in figs. 1 and 2, three sections overlap joint frame assembly structures of two-stage stepping city bus, it comprises front section bicycle frame module 1, stage casing vehicle frame module 2, back segment vehicle frame module 3, as Fig. 3-shown in Figure 6, the cross-sectional plane of the front section bicycle frame longeron 4 of described front section bicycle frame module 1 both sides is " Z " shape structure, and the cross-sectional plane of the back segment chassis side rail 8 of the stage casing chassis side rail 7 of vehicle frame module 2 both sides, described stage casing and back segment vehicle frame module 3 both sides is respectively " ［ " shape structure; One end of front section bicycle frame longeron 4 is placed on the front end of stage casing chassis side rail 7, is bolted part 6 and connects as one, and the front section bicycle frame longeron 4 at this junction (A place) and the vertical surface of stage casing chassis side rail 7 are bolted part 6 and are fastened on connecting panel I 5; The front end of back segment chassis side rail 8 is placed on the rear end of stage casing chassis side rail 7, is bolted part 6 and connects as one, and the stage casing chassis side rail 7 at this junction (B place) and the vertical surface of back segment chassis side rail 8 are bolted part 6 and are fastened on connecting panel II 9; Wherein, described vertical surface is the plane vertical with horizontal surface.The A place is positioned at the right side of front axle center line 10, and the B place is positioned at rear shaft center's line 11 left sides.
Substantially the same manner as Example 1, difference is: described back segment chassis side rail 8 has an arc convex at rear shaft center's line 11 places.
The frame assembly structure of the present invention's design has namely satisfied the reasonable Arrangement requirement of each system of chassis, is convenient to again realize seriation, the modular design on chassis, has effectively increased the passenger zone area of low floor simultaneously; After adopting this programme, the manufacturing cost of each section of vehicle frame reduces greatly, vehicle frame weight greatly reduces, and front axle place passenger passageway increases greatly, and each section chassis side rail adopts the connection structure of bolt nut structure to be convenient to again strange land transportation and assembling that chassis frame is realized CKD simultaneously.
Claims (2)
1. the method for designings of three sections of two-stage stepping city bus overlap joint frame assemblys, it is characterized in that: the frame assembly of this method of designing design comprises front section bicycle frame module (1), stage casing vehicle frame module (2), back segment vehicle frame module (3), the cross-sectional plane of the front section bicycle frame longeron (4) of described front section bicycle frame module (1) both sides is " Z " shape structure, and the cross-sectional plane of the back segment chassis side rail (8) of the stage casing chassis side rail (7) of described stage casing vehicle frame module (2) both sides and back segment vehicle frame module (3) both sides is respectively " ［ " shape structure; One end of front section bicycle frame longeron (4) is placed on the front end of stage casing chassis side rail (7), be bolted part (6) and connect as one, the front section bicycle frame longeron (4) of this junction and the vertical surface of stage casing chassis side rail (7) are bolted part (6) and are fastened on connecting panel I (5); The front end of back segment chassis side rail (8) is placed on the rear end of stage casing chassis side rail (7), be bolted part (6) and connect as one, the stage casing chassis side rail (7) of this junction and the vertical surface of back segment chassis side rail (8) are bolted part (6) and are fastened on connecting panel II (9); Wherein, described vertical surface is the plane vertical with horizontal surface.
2. the method for designings of according to claim 11, three sections overlap joint frame assemblys of two-stage stepping city bus, it is characterized in that: described back segment chassis side rail (8) has been located an arc convex at rear shaft center's line (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110408851 CN103158771A (en) | 2011-12-11 | 2011-12-11 | Design method of three-section lap joint frame assembly of two-step city bus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110408851 CN103158771A (en) | 2011-12-11 | 2011-12-11 | Design method of three-section lap joint frame assembly of two-step city bus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103158771A true CN103158771A (en) | 2013-06-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110408851 Pending CN103158771A (en) | 2011-12-11 | 2011-12-11 | Design method of three-section lap joint frame assembly of two-step city bus |
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| Country | Link |
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| CN (1) | CN103158771A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106143619A (en) * | 2016-08-26 | 2016-11-23 | 东风商用车有限公司 | Tow hook arrangement structure for asymmetric edge beam type frame |
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2011
- 2011-12-11 CN CN 201110408851 patent/CN103158771A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106143619A (en) * | 2016-08-26 | 2016-11-23 | 东风商用车有限公司 | Tow hook arrangement structure for asymmetric edge beam type frame |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130619 |