CN106364561A - Vehicle body structure of bearing type highway passenger vehicle with biasing narrow keel, and left-right side rigidity matching method of vehicle body structure - Google Patents

Vehicle body structure of bearing type highway passenger vehicle with biasing narrow keel, and left-right side rigidity matching method of vehicle body structure Download PDF

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Publication number
CN106364561A
CN106364561A CN201610891214.1A CN201610891214A CN106364561A CN 106364561 A CN106364561 A CN 106364561A CN 201610891214 A CN201610891214 A CN 201610891214A CN 106364561 A CN106364561 A CN 106364561A
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China
Prior art keywords
draconis
truss
diagonal brace
underframe
vehicle body
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CN201610891214.1A
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CN106364561B (en
Inventor
那景新
杨佳宙
苏亮
刘浩垒
慕文龙
谭伟
范以撒
袁正
纪俊栋
王登峰
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Xiamen King Long United Automotive Industry Co Ltd
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Jilin University
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62DMOTOR VEHICLES; TRAILERS
    • B62D21/00Understructures, i.e. chassis frame on which a vehicle body may be mounted
    • B62D21/02Understructures, i.e. chassis frame on which a vehicle body may be mounted comprising longitudinally or transversely arranged frame members
    • B62D21/04Understructures, i.e. chassis frame on which a vehicle body may be mounted comprising longitudinally or transversely arranged frame members single longitudinal type
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62DMOTOR VEHICLES; TRAILERS
    • B62D21/00Understructures, i.e. chassis frame on which a vehicle body may be mounted
    • B62D21/08Understructures, i.e. chassis frame on which a vehicle body may be mounted built up with interlaced cross members

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Body Structure For Vehicles (AREA)

Abstract

The invention discloses a vehicle body structure of a bearing type highway passenger vehicle with a biasing narrow keel. The vehicle body structure comprises a bottom frame middle section and a keel, wherein the bottom frame middle section is located in the middle part of a bottom frame of a vehicle body; the keel laterally penetrates through the bottom frame middle section along the slightly right side of a central axis of the bottom frame middle section; a left side truss of the keel is fixedly connected with a right side truss of the keel through a connecting cross beam; a certain spacing is formed between the left side truss and the right side truss; a movable type inclined brace is mounted on a longitudinal plane of the left side truss; and a fixed type inclined brace is mounted on a longitudinal plane of the right side truss. The invention also discloses a left-right side rigidity matching method of the vehicle body structure of the bearing type highway passenger vehicle with the biasing narrow keel.

Description

A kind of narrow Os Draconis bearing-type the Structure of Bus Body of biasing and its left and right sides rigidity Method of completing the square
Technical field
The present invention relates to bus body structure design is and in particular to a kind of narrow Os Draconis bearing-type highway passenger vehicle vehicle body of biasing is tied Structure and its left and right sides Rigidity Matching method.
Background technology
Under the background that the level of urbanization improves constantly, short-distance highway communication is fast-developing, and wherein highway passenger vehicle plays Irreplaceable effect and be widely used, but the environmental pollution thus causing, fuel oil is in short supply and oil price skyrockets Problem causes the extensive concern of the whole society, and the therefore lightweight to highway passenger vehicle is also just particularly important.
Currently, the keel structure overwhelming majority in the bearing type passenger car vehicle body of Passenger Cars in China and Abroad enterprise is both configured to a multilamellar left side Right symmetric form.Research shows, the load of monocoque construction mainly to be undertaken by peripheral structures such as left and right gussets, and central Os Draconis actually can only undertake sub-fraction load.In peripheral structure, right side wall makes it because being provided with the forward and backward door of passenger doors Insufficient rigidity, therefore leads to body structure stress unreasonable, vehicle body overall performance is asymmetric.In reality, in order to solve vehicle body knot The problem of insufficient rigidity on the right side of structure, conventional solution is to increase the Os Draconis number of plies, diagonal brace quantity and size and arranges Strengthen rigidity with rod member lift the rigidity of right side wall, this virtually increases body quality, increased production cost.
Content of the invention
Based on above-mentioned problems of the prior art, the present invention has designed and developed a kind of narrow Os Draconis bearing-type highway of biasing Coach body structure, present invention aim to address in prior art, body construction stress is unreasonable, structure is loaded down with trivial details, body quality The problems such as big and high cost.
The present invention has also designed and developed a kind of left and right sides rigidity biasing narrow Os Draconis bearing-type the Structure of Bus Body Method of completing the square, the purpose of the present invention is to reach body structure reasonable stress, left and right sides rigidity phase by determining Os Draconis offset position The purpose of coupling.
The technical scheme that the present invention provides is:
A kind of narrow Os Draconis bearing-type the Structure of Bus Body of biasing, comprising:
Underframe stage casing, it is located at the middle part of body understructure;And
Os Draconis, it runs through described underframe stage casing along the axis side to the right in described underframe stage casing;
On the left of Os Draconis, truss is fixedly connected by connecting cross beam with right side truss;
Wherein, described left side truss and the spacing of described right side truss are 200mm~250mm, in described left side truss Fore-and-aft plane installation activity formula diagonal brace, installs fixed diagonal brace in the fore-and-aft plane of described right side truss, described Os Draconis are along underframe The deviation range of stage casing axis side to the right is 100mm~300mm.
Preferably, it is luggage compartment below described underframe stage casing, it is divided into the left and right sides by described Os Draconis;And
It is crew module above described body understructure.
Preferably, described left side truss and described right side truss respectively further comprise: crew module's longitudinal floor beam, luggage compartment Longitudinal floor beam and column;
Described crew module's longitudinal floor beam is connected by described column with described luggage compartment floor longeron, described movable diagonal brace Or fixed diagonal brace is separately positioned between adjacent column.
Preferably, described luggage compartment also includes luggage compartment floor crossbeam, and it is horizontal that described crew module also includes crew module floor Beam and crew module floor connecting cross beam;
Wherein, in described left side truss and described right side truss both sides, and in described luggage compartment floor crossbeam and It is respectively arranged V-shaped diagonal brace between described crew module's floor crossmember.
Preferably, described underframe stage casing and the crew module floor of described underframe leading portion and the occupant of described underframe back segment Connected by V-shaped diagonal brace between the floor of cabin, and the top of described V-shaped diagonal brace is welded in described crew module's floor crossmember, described v The side of type diagonal brace is welded on the truss of described left side, and opposite side is welded in left-side.
Preferably, pass through V-shaped diagonal brace between described luggage compartment floor and described underframe leading portion and described underframe back segment Connect, and the top of described V-shaped diagonal brace is welded in described luggage compartment floor crossbeam, the side of described V-shaped diagonal brace is welded in institute State on the truss of left side, opposite side is welded in left-side.
Preferably, described movable diagonal brace two ends are welded with connector, and it passes through bolt and the company being welded on skeleton Contact pin is fixedly connected.
Preferably, described fuel tank is installed on truss structure and the Os Draconis right side on the left of the Os Draconis of described luggage compartment floor layer Between the truss structure of side.
A kind of left and right sides Rigidity Matching method biasing narrow Os Draconis bearing-type the Structure of Bus Body, walks including following Rapid:
Step one, calculating vehicle body bending stiffness k;
Step 2, on the basis of body structure, on the left of the Os Draconis of scaled down underframe stage casing truss and right side truss with Relative distance between axis, the Os Draconis left and right sides truss distance after distance reduces is l;
Step 3, overall for the Os Draconis axis side to the right along underframe stage casing is installed, offset or dish is y, and vehicle body bending is just Spend for ky
Step 4, Os Draconis are integrally biased to extreme position to the right along the axis in underframe stage casing, offset or dish is ymax, and calculate vehicle body bending stiffness k nowymax
Step 5, by overall for Os Draconis axis side shifting 0.05l to the left along underframe stage casing, now Os Draconis offset or dish isI.e.And calculate vehicle body bending stiffness
Step 6, whenWhen, overall overall to the right to the initial position before right-hand offset and Os Draconis in Os Draconis Multiple equidistant points are taken, respectively record Os Draconis offset or dish and the corresponding vehicle body of described offset or dish between extreme position after biasing Bending stiffness, the wherein maximum corresponding offset or dish of vehicle body bending stiffness is final offset or dish;
WhenWhen, offset or dish ymaxIt is final offset or dish.
Preferably, comprising: described left side truss and described right side truss space are 200mm~250mm, described Os Draconis edge The deviation range of described underframe stage casing axis side to the right is 100mm~300mm.
The present invention is had the advantages that compared with prior art
1st, truss structure on the left of Os Draconis and right side truss structure distance are narrowed by the present invention, as the integral left right avertence of Os Draconis Shifting provides space, then offsets a certain distance to the right by overall for Os Draconis, can suitably reduce left side rigidity accordingly and increase right Side rigidity, to realize the best match of left and right sides rigidity finally by the size adjusting side-play amount, and the method is simple, has Good operability and exploitativeness;
2nd, present invention fore-and-aft plane of truss structure on the left of Os Draconis sets up movable diagonal brace, and this both can increase Os Draconis Rigidity also allows for the handling of fuel tank, and meanwhile, on the right side of Os Draconis, the fore-and-aft plane of truss structure sets up fixed diagonal brace, and this also increases The big rigidity of Os Draconis;
3rd, fuel tank is placed between two anti-rolling chocks of luggage compartment floor, original fuel oil chamber is merged into luggage compartment, this Increase left and right sides luggage compartment facilitate occupant pick and place luggage space so that passenger to pick and place luggage more convenient, also carry simultaneously The high safety in utilization of fuel tank.
Brief description
Fig. 1 reduces Os Draconis both sides truss structure apart from schematic diagram for body understructure stage casing.
Fig. 2 is Fig. 1 horizontal section a-a view.
Fig. 3 is that body understructure stage casing Os Draconis are overall offsets to the right schematic diagram.
Fig. 4 is truss structure schematic diagram on the left of the Os Draconis of body understructure stage casing.
Fig. 5 is truss structure schematic diagram on the right side of the Os Draconis of body understructure stage casing.
Fig. 6 is body understructure top view of the present invention.
Fig. 7 is body understructure front view of the present invention.
Fig. 8 is Fig. 6 horizontal section b-b view.
Fig. 9 is Fig. 7 horizontal section c-c view.
Figure 10 is body understructure stage casing of the present invention crew module floor top view.
Figure 11 is body understructure stage casing of the present invention luggage compartment floor top view.
Figure 12 is Fig. 7 activity diagonal brace junction partial schematic diagram.
Figure 13 isWhen Os Draconis offset or dish and vehicle body bending stiffness law curve schematic diagram.
Figure 14 isWhen Os Draconis offset or dish and vehicle body bending stiffness law curve schematic diagram.
Figure 15 is the vehicle body overall schematic in the specific embodiment of the invention.
Specific embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings, to make those skilled in the art with reference to description literary composition Word can be implemented according to this.
As shown in Fig. 1~12, the invention provides a kind of bias narrow Os Draconis bearing-type the Structure of Bus Body, vehicle body is tied Structure by forward and backward enclose, the sub-unit such as top cover, left and right gusset and underframe forms;Wherein, body understructure is divided into underframe leading portion 1, underframe Stage casing 2 and underframe back segment 3, as shown in Fig. 3 chain-dotted line, Os Draconis 36 cross in underframe along the axis side to the right in underframe stage casing 2 Section 2, chain-dotted line is the position after Os Draconis 36 overall offset, and on the right side of truss structure 4 and Os Draconis on the left of Os Draconis, truss structure 5 is by taking advantage of Member cabin floor connecting cross beam 43 and luggage compartment floor connecting cross beam link together;Wherein, as shown in Fig. 1 chain-dotted line, Os Draconis On the right side of left side truss structure 4 and Os Draconis, the spacing of truss structure 5 narrows down to 200mm~250mm by traditional 650mm~800mm Between, to meet the width dimensions of fuel tank 34, the bold portion in underframe stage casing 2 is the Os Draconis position of prior art, i.e. dragon Bone both sides truss change before position, chain-dotted line reduce for Os Draconis both sides truss distance after position, meanwhile, in underframe On the left of the Os Draconis of section 2, the fore-and-aft plane of truss structure 4 sets up movable diagonal brace 14~16, and on the right side of Os Draconis, truss structure 5 is vertical Set up fixed diagonal brace 6~8 to plane.
In another kind of embodiment, Os Draconis 36 along underframe stage casing 2 axis side to the right deviation range be 100mm~ 300mm, and maximum offset with do not affect to mark time 35 be arranged as constraints.
In another kind of embodiment, underframe stage casing 2 lower section is luggage compartment, is crew module, by fuel tank above body understructure 34, by being placed on outside traditional Os Draconis between the Os Draconis both sides truss structure in underframe stage casing 2, just can form in body center portion bottom Two luggage compartments 37,38 in left and right, this just increases luggage compartment and facilitates occupant to pick and place the space of luggage, is more beneficial for passenger and picks and places row Lee.
In another kind of embodiment, on the right side of truss structure 4 and Os Draconis on the left of Os Draconis, truss structure 5 respectively further comprises: takes advantage of Member's cabin longitudinal floor beam 24,25, luggage compartment floor longeron 29,30, truss on the right side of truss upright-column 17~21 and Os Draconis on the left of Os Draconis Column 9~13;Crew module's longitudinal floor beam 24 is connected by truss upright-column 17~21 on the left of Os Draconis with luggage compartment floor longeron 29, lives Dynamic formula diagonal brace 14~16 is arranged on the left of adjacent Os Draconis between truss upright-column 17~21, crew module's longitudinal floor beam 25 and luggage compartment Longitudinal floor beam 30 passes through truss upright-column 9~13 on the right side of Os Draconis and connects, and fixed diagonal brace 6~8 is arranged on purlin on the right side of adjacent Os Draconis Erect post 9~13.
In another kind of embodiment, luggage compartment also includes luggage compartment floor crossbeam 41,42, and crew module also includes crew module ground Plate crossbeam 39,40 and crew module floor connecting cross beam 43, on the right side of truss structure 4 and Os Draconis on the left of Os Draconis, truss structure 5 exists One layer of crew module floor is connected by crew module's floor crossmember 43, in one layer of luggage compartment floor by luggage compartment floor crossbeam, luggage compartment Middle part diagonal brace connects;Wherein, truss structure 5 both sides on the right side of truss structure 4 and Os Draconis on the left of Os Draconis, and on luggage compartment ground It is respectively arranged V-shaped diagonal brace 31 between plate crossbeam 41,42 and arrange V-shaped diagonal brace 26 between crew module's floor crossmember 39,40, all Undulate is arranged.
In another kind of embodiment, welded by V-shaped diagonal brace 27 between the crew module floor of underframe stage casing 2 and underframe leading portion 1 Connect in succession, be welded to connect by V-shaped diagonal brace 28 between the crew module floor of underframe stage casing 2 and underframe back segment 3, and V-shaped diagonal brace 27 top is welded in crew module's floor crossmember 39, and the top of V-shaped diagonal brace 28 is welded in crew module's floor crossmember 40, V-shaped diagonal brace 27th, 28 side is welded on truss structure 4 on the left of Os Draconis, and opposite side is welded in left-side.
In another kind of embodiment, it is welded to connect by V-shaped diagonal brace 32 between luggage compartment floor and underframe leading portion 1, luggage It is welded to connect by V-shaped diagonal brace 33 between cabin floor and underframe back segment 3, and V-shaped diagonal brace 32 top is welded in luggage compartment floor Crossbeam 41, the top of V-shaped diagonal brace 33 is welded in luggage compartment floor crossbeam 42, and the side of V-shaped diagonal brace 32,33 is welded on the left of Os Draconis On truss structure 4, opposite side is welded in left-side.
In another kind of embodiment, movable diagonal brace two ends are welded with connector 44, and it passes through bolt 46 and is welded on bone Connection sheet 45 on frame is fixed together.
In order that the organization plan of the present invention is clearer, the present invention is made with 12 meters of highway passenger vehicle body undrstructures Improvement is specifically described:
One kind proposed by the invention biases narrow Os Draconis bearing-type the Structure of Bus Body, Undercarriage structure such as Fig. 6, Fig. 7 Shown, on the left of the Os Draconis in coach body structure underframe stage casing 2, truss structure 4 and the spacing of right side truss structure 5 are reduced by 650mm To 250mm, and offset 200mm to the right by overall for Os Draconis, truss structure and underframe leading portion 1 and bottom on the right side of the Os Draconis after skew On the right side of the Os Draconis of frame back segment 3, truss structure is located in same fore-and-aft plane, and then reaches and do not affect 35 arrangement of marking time, such as Fig. 6 Shown, this makes left and right sides Rigidity Matching more reasonable, and body structure stress tends to symmetrical.
As shown in fig. 7, on the left of the Os Draconis in underframe stage casing 2 fore-and-aft plane of truss structure 4 set up movable diagonal brace 14~ 16, as shown in figure 12, the two ends of movable diagonal brace are welded with connector 44, and this connector passes through bolt 46 and is welded on skeleton Connection sheet 45 is fixed together.
As shown in figure 8, the fore-and-aft plane of truss structure 5 sets up fixed diagonal brace 6~8, fixed diagonal brace 6 on the right side of Os Draconis ~8 angle can be adjusted according to concrete stressing conditions.
Wherein, as shown in Fig. 7,10,11, on the left of Os Draconis, truss structure 4 is indulged by crew module's longitudinal floor beam 24, luggage compartment floor Beam 29, column 17~21 and movable diagonal brace 14~16 composition, crew module's longitudinal floor beam 24 and luggage compartment floor longeron 29 by Column 17~21 connects, and the height of column is 1355mm, crew module's longitudinal floor beam 24 and the long 4280mm of luggage compartment floor longeron 29; As shown in Fig. 8,10,11, on the right side of Os Draconis truss structure 5 by crew module's longitudinal floor beam 25, luggage compartment floor longeron 30, column 9~ 13 and fixed diagonal brace 6~8 composition, crew module's longitudinal floor beam 25 is connected by column 9~13 with luggage compartment floor longeron 30, vertical The height of post is 1355mm, crew module's longitudinal floor beam 25 and the long 4280mm of luggage compartment floor longeron 30.
As shown in Figure 10, the both sides arrangement v shape diagonal brace 26 of the Os Draconis truss structure on underframe stage casing crew module floor, and become Waveform is arranged;Wherein, underframe stage casing 2 and the top of the v shape diagonal brace 27 of underframe leading portion 1 junction are welded in crew module floor horizontal stroke Beam 39 and be located at underframe longitudinal beam at front section of automobile 22 opposition position (on the left of Os Draconis truss structure biasing before be located at underframe longitudinal beam at front section of automobile 22 In same fore-and-aft plane), meanwhile, a side of v shape diagonal brace is welded in (i.e. crew module's longitudinal floor beam on truss 4 on the left of Os Draconis 24), another side is welded in the transmission in order to longitudinal force for the left-side, and underframe stage casing 2 is oblique with the v shape of underframe back segment 3 junction The top of support 28 is welded in crew module's floor crossmember 40, and meanwhile, a side of v shape diagonal brace is welded on truss 4 on the left of Os Draconis (i.e. Crew module's longitudinal floor beam 24), another side is welded in the transmission in order to longitudinal force for the left-side.
As shown in figure 11, luggage compartment floor truss structure (4) and right side truss structure (5) both sides on the left of Os Draconis are also arranged There is v shape diagonal brace 31, waviness is arranged;Luggage compartment floor is welded in row with the top of the V-shaped diagonal brace 32 of underframe leading portion 1 junction Lee cabin floor crossmember 41, simultaneously a side of V-shaped diagonal brace 32 be welded in (i.e. luggage compartment longitudinal floor beam on truss 4 on the left of Os Draconis 29), another side is welded in the transmission in order to longitudinal force for the left-side, and luggage compartment floor is oblique with the V-shaped of underframe back segment 3 junction The top of support 33 is welded in luggage compartment floor crossbeam 42, and a side of V-shaped diagonal brace 33 is welded on truss 4 on the left of Os Draconis simultaneously (i.e. luggage compartment longitudinal floor beam 29), another side is welded in the transmission in order to longitudinal force for the left-side.
As shown in figure 9, between fuel tank is placed in the Os Draconis both sides truss structure in underframe stage casing 2, in body center portion bottom Two luggage compartments 37,38 in left and right can be formed, this just increases luggage compartment and facilitates occupant to pick and place the space of luggage, is more beneficial for passenger Pick and place luggage.
Passenger doors arrange level Four altogether and mark time afterwards, and every grade of depth of marking time is 20mm, and highly for 340mm, width is 800mm.
As shown in Fig. 1~5, present invention also offers a kind of left and right biasing narrow Os Draconis bearing-type the Structure of Bus Body Side Rigidity Matching method, its principle is as follows:
Calculate original vehicle body bending stiffness, be designated as k;On the basis of original body structure, scaled down underframe stage casing dragon Relative distance between the left side truss of bone and right side truss and axis;Secondly, according to Chinese Highway traffic law, can be by dragon The overall axis along underframe stage casing of bone biases to extreme position to opening up passenger doors side (i.e. right side), and calculates car now Body bending stiffness, is designated as k1;Again, in Os Draconis entirety to the initial position before right-hand offset and Os Draconis entirety to the pole after right-hand offset Take m equidistant points between extreme position, calculate Os Draconis respectively and be biased to the right vehicle body bending stiffness during above equidistant points;Finally, Respectively with offset or dish as independent variable, vehicle body bending stiffness does law curve figure for dependent variable, as shown in figure 13, finds out from figure The corresponding offset or dish of maximum deflection rigidity value is optimal solution, realizes the best match of left and right sides rigidity with this.
In Practical Project uses, the optimal solution of offset or dish is likely located at the right side that Os Draconis bias extreme position, and it is sentenced Disconnected foundation is: vehicle body bending stiffness k that Os Draconis are integrally calculated after extreme position to the left side shifting one small distance2With Os Draconis Positioned at right limit position when vehicle body bending stiffness k1Contrast, if k1>k2, then the optimal solution of offset or dish is positioned at Os Draconis biasing The right side of extreme position, but the restriction due to arrangement of marking time, the extreme position that Os Draconis deflection right side disposes can be considered optimal solution, this When law curve schematic diagram as shown in figure 14;If k1<k2, that is, the optimal solution of offset or dish between Os Draconis overall to before right-hand offset , between the extreme position after right-hand offset, curve synoptic diagram now is as shown in figure 13, from figure for initial position and Os Draconis entirety Find the corresponding offset or dish of maximum deflection rigidity as optimal solution;If k1=k2, then the optimal solution of offset or dish between Os Draconis to Right-hand offset extreme position and Os Draconis are moved to the left after a small distance between corresponding offset position again, find maximum deflection from figure The corresponding offset or dish of rigidity is optimal solution.
Specifically include following steps:
Step one, calculating vehicle body bending stiffness, are designated as k;
Step 2, on the basis of body structure, on the left of the Os Draconis of scaled down underframe stage casing truss and right side truss with Relative distance between axis, the Os Draconis left and right sides truss distance after distance is reduced is designated as l, that is, as shown in Fig. 1 48 Os Draconis left and right sides truss is apart from l;
Step 3, overall for the Os Draconis axis side to the right along underframe stage casing is installed, offset or dish is designated as y, and vehicle body bends Rigidity is designated as ky
Step 4, Os Draconis are integrally biased to extreme position to the right along the axis in underframe stage casing, and to right-hand offset Extreme position not affect the condition that is arranged as marked time, now offset or dish is designated as ymax, and the vehicle body bending calculating now is firm Degree, is designated as kymax
Step 5, on the basis of step 4, by overall for Os Draconis axis side shifting 0.05l to the left along underframe stage casing, Now Os Draconis offset or dish is designated asI.e.And calculate vehicle body bending stiffness, it is designated as
Step 6, compareWith kymaxSize, comprising:
WhenWhen, then the optimal solution of Os Draconis offset or dish is between the integral biased front initial position of Os Draconis And the extreme position after biasing between, in Os Draconis entirety to the initial position before right-hand offset and Os Draconis entirety to the pole after right-hand offset M equidistant points is taken, Os Draconis offset or dish is designated as y between extreme position1, y2..., ym, and calculate corresponding vehicle body bending stiffness ky1, ky2..., kym;Respectively with Os Draconis offset or dish y as independent variable, with vehicle body bending stiffness kyDo law curve figure for dependent variable, such as Shown in Figure 13, find out the corresponding offset or dish of maximum vehicle body bending stiffness from figure and be optimal solution;M is 3 in the present embodiment ~5;
WhenWhen, then the optimal solution of offset or dish is located at the right side that Os Draconis bias extreme position, but due to The restriction of arrangement of marking time, Os Draconis are located at right limit position corresponding offset or dish ymaxIt is optimal solution.
In another kind of embodiment, on the right side of truss structure 4 and Os Draconis on the left of Os Draconis truss structure 5 spacing be 200mm~ 250mm, to meet the width dimensions of fuel tank, Os Draconis along underframe stage casing 2 axis side to the right deviation range be 100mm~ 300mm, and the maximum offset of Os Draconis is arranged as constraints with do not affect to mark time.
Embodiment
A kind of left and right sides Rigidity Matching method of biasing narrow Os Draconis bearing-type the Structure of Bus Body that the present invention provides, Comprise the steps:
On the left of step one, the original body structure Os Draconis of measurement, the distance of truss and right side truss is 650mm, calculates vehicle body curved Stiffness k=1.05 × 107n/m;
Step 2, on the basis of body structure, the left side truss of scaled down underframe stage casing Os Draconis and right side truss Relative distance and between axis, distance reduce after Os Draconis left and right sides truss apart from l=250mm;
Step 3, Os Draconis are integrally biased to extreme position, offset or dish y to the right along the axis in underframe stage casingmax= 200mm, and calculate vehicle body bending stiffness k nowymax=1.26 × 107n/m;
Step 4, again by overall for Os Draconis axis side shifting 10mm to the left along underframe stage casing, that is,And Calculate vehicle body bending stiffness
Step 5, compareWith kymaxSize, now,Therefore vehicle body bending stiffness kymaxCorresponding Offset or dish ymax=200mm is optimal solution, realizes the best match of left and right sides rigidity accordingly.
Devise a 12 meters of biasing narrow Os Draconis bearing-type the Structure of Bus Body according to the present invention, wherein in underframe Segment length is 6.175m, a width of 2.434m, a height of 1.355m, and as shown in figure 15, the cae analysis result of body structure performance is as follows:
The vehicle body bending stiffness of improved model: 1.26 × 107n/m
The vehicle body bending stiffness of archetype: 1.05 × 107n/m
The body frame quality of improved model: 2703.27kg
The body frame quality of archetype: 2810.37kg
Above analysis result shows that the application has good coupling effect by the way of Os Draconis biasing to left and right sides rigidity Really, vehicle body bending stiffness improves 20%, and body frame quality also reduces 107kg.
Although embodiment of the present invention is disclosed as above, it is not restricted to listed in description and embodiment With, it can be applied to various suitable the field of the invention completely, for those skilled in the art, can be easily Realize other modification, therefore under the general concept being limited without departing substantially from claim and equivalency range, the present invention does not limit In specific details with shown here as the legend with description.

Claims (10)

1. a kind of narrow Os Draconis bearing-type the Structure of Bus Body of biasing is it is characterised in that include:
Underframe stage casing, it is located at the middle part of body understructure;And
Os Draconis, it runs through described underframe stage casing along the axis side to the right in described underframe stage casing;
On the left of Os Draconis, truss is fixedly connected by connecting cross beam with right side truss;
Wherein, described left side truss and the spacing of described right side truss are 200mm~250mm, in the longitudinal direction of described left side truss The movable diagonal brace of Plane Installation, installs fixed diagonal brace in the fore-and-aft plane of described right side truss, described Os Draconis are along underframe stage casing The deviation range of axis side to the right is 100mm~300mm.
2. the narrow Os Draconis bearing-type the Structure of Bus Body of biasing as claimed in claim 1 is it is characterised in that in described underframe Section lower section is luggage compartment, and it is divided into the left and right sides by described Os Draconis;And
It is crew module above described body understructure.
3. the narrow Os Draconis bearing-type the Structure of Bus Body of biasing as claimed in claim 1 or 2 is it is characterised in that a described left side Side truss and described right side truss respectively further comprise: crew module's longitudinal floor beam, luggage compartment floor longeron and column;
Described crew module's longitudinal floor beam is connected by described column with described luggage compartment floor longeron, described movable diagonal brace or Fixed diagonal brace is separately positioned between adjacent column.
4. the narrow Os Draconis bearing-type the Structure of Bus Body of biasing as claimed in claim 3 is it is characterised in that described luggage compartment Also include luggage compartment floor crossbeam, described crew module also includes crew module's floor crossmember and crew module floor connecting cross beam;
Wherein, in described left side truss and described right side truss both sides, and in described luggage compartment floor crossbeam and described It is respectively arranged V-shaped diagonal brace between crew module's floor crossmember.
5. the narrow Os Draconis bearing-type the Structure of Bus Body of biasing as claimed in claim 4 is it is characterised in that in described underframe Section is connected by V-shaped diagonal brace between the crew module floor of described underframe leading portion and the crew module floor of described underframe back segment, And the top of described V-shaped diagonal brace is welded in described crew module's floor crossmember, the side of described V-shaped diagonal brace is welded in described left side On truss, opposite side is welded in left-side.
6. the narrow Os Draconis bearing-type the Structure of Bus Body of biasing as claimed in claim 5 is it is characterised in that described luggage compartment It is connected by V-shaped diagonal brace between floor and described underframe leading portion and described underframe back segment, and the top weldering of described V-shaped diagonal brace It is connected to described luggage compartment floor crossbeam, the side of described V-shaped diagonal brace is welded on the truss of described left side, opposite side is welded in left side Enclose.
7. the narrow Os Draconis bearing-type the Structure of Bus Body of biasing as claimed in claim 1 is it is characterised in that described movable Diagonal brace two ends are welded with connector, and it is fixedly connected with the connection sheet being welded on skeleton by bolt.
8. as claimed in claim 7 bias narrow Os Draconis bearing-type the Structure of Bus Body it is characterised in that described fuel oil Case is installed on the right side of truss structure and Os Draconis on the left of the Os Draconis of described luggage compartment floor layer between truss structure.
9. a kind of left and right sides Rigidity Matching method biasing narrow Os Draconis bearing-type the Structure of Bus Body is it is characterised in that wrap Include following steps:
Step one, calculating vehicle body bending stiffness k;
Step 2, on the basis of body structure, truss and right side truss and axis on the left of the Os Draconis of scaled down underframe stage casing Relative distance between line, the Os Draconis left and right sides truss distance after distance reduces is l;
Step 3, overall for the Os Draconis axis side to the right along underframe stage casing is installed, offset or dish is y, and vehicle body bending stiffness is ky
Step 4, Os Draconis are integrally biased to extreme position to the right along the axis in underframe stage casing, offset or dish is ymax, and Calculate vehicle body bending stiffness k nowymax
Step 5, by overall for Os Draconis axis side shifting 0.05l to the left along underframe stage casing, now Os Draconis offset or dish isI.e.And calculate vehicle body bending stiffness
Step 6, whenWhen, in Os Draconis entirety to the initial position before right-hand offset and Os Draconis entirety to right-hand offset Multiple equidistant points are taken, respectively record Os Draconis offset or dish and the bending of described offset or dish corresponding vehicle body between extreme position afterwards Rigidity, the wherein maximum corresponding offset or dish of vehicle body bending stiffness is final offset or dish;
WhenWhen, offset or dish ymaxIt is final offset or dish.
10. the left and right sides Rigidity Matching method biasing narrow Os Draconis bearing-type the Structure of Bus Body as claimed in claim 9, It is characterized in that, comprising: described left side truss is 200mm~250mm with described right side truss space, and described Os Draconis are along described bottom The deviation range of frame stage casing axis side to the right is 100mm~300mm.
CN201610891214.1A 2016-10-12 2016-10-12 One kind biases narrow keel bearing-type the Structure of Bus Body and its left and right sides Rigidity Matching method Active CN106364561B (en)

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