CN106364561B - One kind biases narrow keel bearing-type the Structure of Bus Body and its left and right sides Rigidity Matching method - Google Patents
One kind biases narrow keel bearing-type the Structure of Bus Body and its left and right sides Rigidity Matching method Download PDFInfo
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- CN106364561B CN106364561B CN201610891214.1A CN201610891214A CN106364561B CN 106364561 B CN106364561 B CN 106364561B CN 201610891214 A CN201610891214 A CN 201610891214A CN 106364561 B CN106364561 B CN 106364561B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
- B62D21/02—Understructures, i.e. chassis frame on which a vehicle body may be mounted comprising longitudinally or transversely arranged frame members
- B62D21/04—Understructures, i.e. chassis frame on which a vehicle body may be mounted comprising longitudinally or transversely arranged frame members single longitudinal type
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
- B62D21/08—Understructures, i.e. chassis frame on which a vehicle body may be mounted built up with interlaced cross members
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Abstract
The invention discloses one kind to bias narrow keel bearing-type the Structure of Bus Body, including：Chassis stage casing, it is located at the middle part of body understructure；And the chassis stage casing is crossed in keel, its axis side to the right along the chassis stage casing；Truss is fixedly connected with right side truss by connecting cross beam on the left of keel；Wherein, the left side truss has at regular intervals with the right side truss, and in the fore-and-aft plane installation activity formula diagonal brace of the left side truss, fixed diagonal brace is installed in the fore-and-aft plane of the right side truss.The invention also discloses a kind of left and right sides Rigidity Matching method for biasing narrow keel bearing-type the Structure of Bus Body.
Description
Technical field
The present invention relates to bus body structure design, and in particular to one kind biases narrow keel bearing-type highway passenger vehicle vehicle body knot
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 thus caused environmental pollution, fuel oil is in short supply and oil price skyrockets
Problem causes the extensive concern of the whole society, therefore the 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 multilayer left side
Right symmetric form.Research shows that the load of monocoque construction is mainly undertaken by peripheral structures such as left and right gussets, and central
Keel can only actually 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 cause body structure stress unreasonable, vehicle body overall performance is asymmetric.In reality, in order to solve vehicle body knot
On the right side of structure the problem of insufficient rigidity, conventional solution is the increase keel number of plies, diagonal brace quantity and size and set
The rod member for strengthening rigidity lifts the rigidity of right side wall, and this virtually increases body quality, add production cost.
The content of the invention
Based on above-mentioned problems of the prior art, the present invention has designed and developed a kind of narrow keel bearing-type highway of biasing
Coach body structure, present invention aim to address body construction stress is unreasonable in the prior art, structure is cumbersome, body quality
The problems such as big and cost is high.
The present invention has also designed and developed a kind of left and right sides rigidity for biasing narrow keel bearing-type the Structure of Bus Body
Method of completing the square, the purpose of the present invention are to reach body structure reasonable stress, left and right sides rigidity phase by determining keel offset position
The purpose of matching.
Technical scheme provided by the invention is：
One kind biases narrow keel bearing-type the Structure of Bus Body, including：
Chassis stage casing, it is located at the middle part of body understructure；And
The chassis stage casing is run through in keel, its axis side to the right along the chassis stage casing；
Truss is fixedly connected with right side truss by connecting cross beam on the left of keel；
Wherein, the spacing of the left side truss and the right side truss is 200mm~250mm, in the left side truss
Fore-and-aft plane installation activity formula diagonal brace, fixed diagonal brace is installed in the fore-and-aft plane of the right side truss, the keel are along chassis
The deviation range of stage casing axis side to the right is 100mm~300mm.
Preferably, it is luggage compartment below the chassis stage casing, it is divided into the left and right sides by the keel；And
It is crew module above the body understructure.
Preferably, the left side truss and the right side truss respectively further comprise：Crew module's longitudinal floor beam, luggage compartment
Longitudinal floor beam and column；
Crew module's longitudinal floor beam is connected with the luggage compartment floor longeron by the column, the movable diagonal brace
Or fixed diagonal brace is separately positioned between adjacent column.
Preferably, the luggage compartment also includes luggage compartment floor crossbeam, and it is horizontal that the crew module also includes crew module floor
Beam and crew module floor connecting cross beam；
Wherein, in the left side truss and the right side truss both sides, and in the luggage compartment floor crossbeam and
V-type diagonal brace is respectively arranged between crew module's floor crossmember.
Preferably, the chassis stage casing and the crew module floor of the chassis leading portion and the occupant of the chassis back segment
Connected between the floor of cabin by V-type diagonal brace, and the top of the V-type diagonal brace is welded in crew module's floor crossmember, the V
The side of type diagonal brace is welded on the left side truss, and opposite side is welded in left-side.
Preferably, V-type diagonal brace is passed through between the luggage compartment floor and the chassis leading portion and the chassis back segment
Connection, and the top of the V-type diagonal brace is welded in the luggage compartment floor crossbeam, and the side of the V-type diagonal brace is welded in institute
State on the truss of left side, opposite side is welded in left-side.
Preferably, the movable diagonal brace both ends are welded with connector, and it passes through bolt and the company being welded on skeleton
Contact pin is fixedly connected.
Preferably, it is right to be installed on truss structure and keel on the left of the keel of the luggage compartment floor layer for described fuel tank
Between the truss structure of side.
A kind of left and right sides Rigidity Matching method for biasing narrow keel bearing-type the Structure of Bus Body, including following step
Suddenly：
Step 1: calculate vehicle body bending stiffness K；
Step 2: on the basis of body structure, on the left of the keel of scaled down chassis stage casing truss and right side truss with
Relative distance between axis, the keel left and right sides truss distance after distance reduces is L；
Step 3: the overall axis along chassis stage casing of keel side to the right is installed, offset or dish Y, vehicle body bending is firm
Spend for KY；
Step 4: keel entirety is biased into extreme position to the right along the axis in chassis stage casing, offset or dish is
Ymax, and calculate vehicle body bending stiffness K nowYmax；
Step 5: keel entirety is moved into 0.05L to the left along the axis in chassis stage casing, now keel offset or dish isI.e.And calculate vehicle body bending stiffness
Step 6: work asWhen, it is overall overall to the right to the initial position before right-hand offset and keel in keel
Multiple equidistant points are taken between extreme position after biasing, record vehicle body corresponding to keel offset or dish and the offset or dish respectively
Bending stiffness, wherein offset or dish corresponding to maximum vehicle body bending stiffness is final offset or dish；
WhenWhen, offset or dish YmaxAs final offset or dish.
Preferably, including：The left side truss and the right side truss spacing are 200mm~250mm, the keel edge
The deviation range of chassis stage casing axis side to the right is 100mm~300mm.
Present invention beneficial effect possessed compared with prior art：
1st, the present invention narrows truss structure on the left of keel and right side truss structure distance, as the integral left right avertence of keel
Shifting provides space, then keel are integrally offset to the right into a certain distance, can suitably reduce left side rigidity accordingly and increase is right
Side rigidity, the best match of left and right sides rigidity is realized finally by the size of regulation offset, this method is simple and easy, has
Good operability and exploitativeness；
2nd, present invention fore-and-aft plane of truss structure on the left of keel sets up movable diagonal brace, and this can both increase keel
Rigidity also allows for the handling of fuel tank, meanwhile, the fore-and-aft plane of truss structure sets up fixed diagonal brace on the right side of keel, and this also increases
The big rigidity of keel；
3rd, between fuel tank being placed in into two anti-rolling chocks of luggage compartment floor, original fuel oil chamber is merged into luggage compartment, this
Increase the left and right sides luggage compartment space that facilitates occupant to pick and place luggage so that it is more convenient that passenger picks and places luggage, while also carries
The high safety in utilization of fuel tank.
Brief description of the drawings
Fig. 1 is that body understructure stage casing reduces keel both sides truss structure apart from schematic diagram.
Fig. 2 is Fig. 1 transverse direction section A-A views.
Fig. 3 is that body understructure stage casing keel integrally offset to the right schematic diagram.
Fig. 4 is truss structure schematic diagram on the left of the keel of body understructure stage casing.
Fig. 5 is truss structure schematic diagram on the right side of the keel 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 transverse direction section B-B views.
Fig. 9 is Fig. 7 transverse direction section C-C views.
Figure 10 is body understructure stage casing crew module floor of the present invention top view.
Figure 11 is body understructure stage casing luggage compartment floor top view of the present invention.
Figure 12 is Fig. 7 activity diagonal braces junction partial schematic diagram.
Figure 13 isWhen keel offset or dish and vehicle body bending stiffness law curve schematic diagram.
Figure 14 isWhen keel 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.
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 specification text
Word can be implemented according to this.
As shown in Fig. 1~12, the invention provides one kind to bias narrow keel bearing-type the Structure of Bus Body, vehicle body knot
Structure by it is forward and backward enclose, the sub-unit such as top cover, left and right gusset and chassis forms；Wherein, body understructure is divided into chassis leading portion 1, chassis
Stage casing 2 and chassis back segment 3, as shown in Fig. 3 chain-dotted lines, axis of the keel 36 along chassis stage casing 2 side to the right is crossed in chassis
Section 2, chain-dotted line are the position after the overall offset of keel 36, and keel left side truss structure 4 is with truss structure 5 on the right side of keel by multiplying
Member cabin floor connecting cross beam 43 and luggage compartment floor connecting cross beam link together；Wherein, as shown in Fig. 1 chain-dotted lines, keel
The spacing of left side truss structure 4 and truss structure 5 on the right side of keel narrows down to 200mm~250mm by traditional 650mm~800mm
Between, to meet the width dimensions of fuel tank 34, the bold portion in chassis stage casing 2 is the keel position of prior art, i.e. dragon
Position before the truss variation of bone both sides, chain-dotted line is the position after truss distance in keel both sides reduces, at the same time, in chassis
The fore-and-aft plane of truss structure 4 sets up movable diagonal brace 14~16 on the left of the keel of section 2, and truss structure 5 is vertical on the right side of keel
Fixed diagonal brace 6~8 is set up to plane.
In another embodiment, deviation range of the keel 36 along the axis of chassis stage casing 2 side to the right be 100mm~
300mm, and maximum offset 35 is arranged as constraints not influence to mark time.
In another embodiment, the lower section of chassis stage casing 2 is luggage compartment, is crew module above body understructure, by fuel tank
Between 34 outside traditional keel by being placed on the keel both sides truss structure in chassis stage casing 2, it can be formed in body center portion bottom
The luggage compartment of left and right two 37,38, this just increases the space that luggage compartment facilitates occupant to pick and place luggage, is more beneficial for passenger and picks and places row
Lee.
In another embodiment, truss structure 4 and keel right side truss structure 5 respectively further comprise on the left of keel：Multiply
Member cabin longitudinal floor beam 24,25, luggage compartment floor longeron 29,30, keel left side truss upright-column 17~21 and keel right side truss
Column 9~13；Crew module's longitudinal floor beam 24 is connected with luggage compartment floor longeron 29 by truss upright-column 17~21 on the left of keel, living
Dynamic formula diagonal brace 14~16 is arranged on the left of adjacent keel between truss upright-column 17~21, crew module's longitudinal floor beam 25 and luggage compartment
Longitudinal floor beam 30 is connected by truss upright-column 9~13 on the right side of keel, and fixed diagonal brace 6~8 is arranged on purlin on the right side of adjacent keel
Erect post 9~13.
In another embodiment, luggage compartment also includes luggage compartment floor crossbeam 41,42, and crew module is with also including crew module
Plate crossbeam 39,40 and crew module floor connecting cross beam 43, keel left side truss structure 4 and keel right side truss structure 5 exist
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 connection；Wherein, the both sides of truss structure 5 on the right side of truss structure 4 and keel on the left of the keel, and in luggage compartment
V-type diagonal brace 31 is respectively arranged between plate crossbeam 41,42 and V-type diagonal brace 26 is arranged between crew module's floor crossmember 39,40,
Undulate is arranged.
In another embodiment, welded between the crew module floor of chassis stage casing 2 and chassis leading portion 1 by V-type diagonal brace 27
Connect, be welded to connect between the crew module floor of chassis stage casing 2 and chassis back segment 3 by V-type diagonal brace 28 in succession, and V-type diagonal brace
27 top is welded in crew module's floor crossmember 39, and the top of V-type diagonal brace 28 is welded in crew module's floor crossmember 40, V-type diagonal brace
27th, 28 side is welded on the left of keel on truss structure 4, and opposite side is welded in left-side.
In another embodiment, it is welded to connect between luggage compartment floor and chassis leading portion 1 by V-type diagonal brace 32, luggage
It is welded to connect between cabin floor and chassis back segment 3 by V-type diagonal brace 33, and the top of V-type diagonal brace 32 is welded in luggage compartment floor
Crossbeam 41, the top of V-type diagonal brace 33 are welded in luggage compartment floor crossbeam 42, and the side of V-type diagonal brace 32,33 is welded on the left of keel
On truss structure 4, opposite side is welded in left-side.
In another embodiment, movable diagonal brace both ends are welded with connector 44, and it is by 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, what the present invention was made with 12 meters of highway passenger vehicle body undrstructures
Improvement is specifically described：
One kind proposed by the invention biases narrow keel bearing-type the Structure of Bus Body, Undercarriage structure such as Fig. 6, Fig. 7
Shown, the spacing of truss structure 4 and right side truss structure 5 is reduced by 650mm on the left of the keel in coach body structure chassis stage casing 2
200mm is integrally offset to the right to 250mm, and by keel, truss structure and chassis leading portion 1 and bottom on the right side of the keel after skew
Truss structure is located in same fore-and-aft plane on the right side of the keel of frame back segment 3, and then do not influence to mark time 35 arrangement, such as Fig. 6
Shown, this make it that left and right sides Rigidity Matching is more reasonable, and body structure stress tends to be symmetrical.
As shown in fig. 7, on the left of the keel in chassis stage casing 2 fore-and-aft plane of truss structure 4 set up movable diagonal brace 14~
16, as shown in figure 12, the both ends of movable diagonal brace are welded with connector 44, and the connector is by 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 keel
~8 angle can be adjusted according to specific stressing conditions.
Wherein, as shown in Fig. 7,10,11, truss structure 4 is indulged by crew module's longitudinal floor beam 24, luggage compartment floor on the left of keel
Beam 29, column 17~21 and movable diagonal brace 14~16 form, 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 29 long 4280mm of luggage compartment floor longeron；
As shown in Fig. 8,10,11, on the right side of keel 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 form, crew module's longitudinal floor beam 25 is connected with luggage compartment floor longeron 30 by column 9~13, vertical
The height of post is 1355mm, crew module's longitudinal floor beam 25 and 30 long 4280mm of luggage compartment floor longeron.
As shown in Figure 10, chassis stage casing crew module floor keel truss structure both sides arrange shaped inclined strut 26, and into
Waveform is arranged；Wherein, chassis stage casing 2 and the top of the shaped inclined strut 27 of the junction of chassis leading portion 1 are welded in crew module floor horizontal stroke
Beam 39 and (it is located at positioned at the opposition position of chassis longitudinal beam at front section of automobile 22 before truss structure biasing with chassis longitudinal beam at front section of automobile 22 on the left of keel
In same fore-and-aft plane), meanwhile, a side of shaped inclined strut is welded on the left of keel (i.e. crew module's longitudinal floor beam on truss 4
24), another side is welded in transmission of the left-side in order to longitudinal force, and the V-arrangement in chassis stage casing 2 and the junction of chassis back segment 3 is oblique
The top of support 28 is welded in crew module's floor crossmember 40, meanwhile, a side of shaped inclined strut is welded on the left of keel on truss 4 (i.e.
Crew module's longitudinal floor beam 24), another side is welded in transmission of the left-side in order to longitudinal force.
As shown in figure 11, luggage compartment floor truss structure (4) on the left of keel is also arranged with right side truss structure (5) both sides
There are shaped inclined strut 31, waviness arrangement；The top of luggage compartment floor and the V-type diagonal brace 32 of the junction of chassis leading portion 1 is welded in row
Lee cabin floor crossmember 41, while a side of V-type diagonal brace 32 is welded on the left of keel (i.e. luggage compartment longitudinal floor beam on truss 4
29), another side is welded in transmission of the left-side in order to longitudinal force, and luggage compartment floor and the V-type of the junction of chassis back segment 3 are oblique
The top of support 33 is welded in luggage compartment floor crossbeam 42, while a side of V-type diagonal brace 33 is welded on the left of keel on truss 4
(i.e. luggage compartment longitudinal floor beam 29), another side are welded in transmission of the left-side in order to longitudinal force.
As shown in figure 9, between fuel tank is placed in into the keel both sides truss structure in chassis stage casing 2, in body center portion bottom
Two luggage compartments 37,38 in left and right can be formed, this just increases the space that luggage compartment facilitates occupant to pick and place luggage, is more beneficial for passenger
Pick and place luggage.
Passenger doors set level Four to mark time altogether afterwards, and every grade of depth of marking time is 20mm, is highly 340mm, width 800mm.
As shown in Fig. 1~5, present invention also offers a kind of left and right for biasing narrow keel bearing-type the Structure of Bus Body
Side Rigidity Matching method, its principle are as follows：
Original vehicle body bending stiffness is calculated, is designated as K；On the basis of original body structure, scaled down chassis stage casing dragon
Relative distance between the left side truss of bone and right side truss and axis；Secondly, can be by dragon according to Chinese Highway traffic law
The overall axis along chassis stage casing of bone biases to extreme position to passenger doors side (i.e. right side) is opened up, and calculates car now
Body bending stiffness, is designated as K1；Again, it is overall overall to the pole after right-hand offset to the initial position before right-hand offset and keel in keel
M equidistant points is taken between extreme position, calculates vehicle body bending stiffness when keel are biased to the right above equidistant points respectively；Finally,
Respectively using offset or dish as independent variable, vehicle body bending stiffness is that dependent variable does law curve figure, as shown in figure 13, is found out from figure
Offset or dish corresponding to maximum deflection rigidity value is optimal solution, and the best match of left and right sides rigidity is realized with this.
In Practical Project utilization, the optimal solution of offset or dish is likely located at the right side of keel biasing extreme position, and it is sentenced
Disconnected foundation is：Keel are integrally moved to the vehicle body bending stiffness K calculated after a small distance to the left from extreme position2With keel
Vehicle body bending stiffness K during positioned at right limit position1Contrast, if K1>K2, then the optimal solution of offset or dish be located at keel biasing
The right side of extreme position, but because the limitation for arrangement of marking time, the extreme position of keel deviation right side placement can be considered optimal solution, this
When law curve schematic diagram it is as shown in figure 14；If K1<K2, i.e. the optimal solution of offset or dish is overall to before right-hand offset between keel
Initial position and keel are overall between the extreme position after right-hand offset, and curve synoptic diagram now is as shown in figure 13, from figure
Offset or dish corresponding to maximum deflection rigidity is found as optimal solution；If K1=K2, then the optimal solution of offset or dish between keel to
Right-hand offset extreme position is moved to the left after a small distance between corresponding offset position again with keel, and maximum deflection is found from figure
Offset or dish corresponding to rigidity is optimal solution.
Specifically comprise the following steps：
Step 1: calculating vehicle body bending stiffness, K is designated as；
Step 2: on the basis of body structure, on the left of the keel of scaled down chassis stage casing truss and right side truss with
Relative distance between axis, the keel left and right sides truss distance after distance is reduced is designated as L, i.e., as shown in 48 in Fig. 1
Truss distance L at left and right sides of keel；
Step 3: the overall axis along chassis stage casing of keel side to the right is installed, offset or dish is designated as Y, vehicle body bending
Rigidity is designated as KY；
Step 4: the overall axis along chassis stage casing of keel biased into extreme position to the right, and to right-hand offset
Be arranged as condition of the extreme position not influence to mark time, now offset or dish be designated as Ymax, and the vehicle body bending calculated now is firm
Degree, is designated as KYmax；
Step 5: on the basis of step 4, keel entirety is moved into 0.05L to the left along the axis in chassis stage casing,
Now keel offset or dish is designated asI.e.And vehicle body bending stiffness is calculated, it is designated as
Step 6: compareWith KYmaxSize, including：
WhenWhen, then the optimal solution of keel offset or dish is between the integral biased preceding initial position of keel
It is overall overall to the pole after right-hand offset to the initial position before right-hand offset and keel in keel between the extreme position after biasing
M equidistant points is taken between extreme position, keel offset or dish is designated as Y1, Y2..., Ym, and calculate corresponding vehicle body bending stiffness KY1,
KY2..., KYm；Respectively using keel offset or dish Y as independent variable, with vehicle body bending stiffness KYLaw curve figure is done for dependent variable, such as
Shown in Figure 13, maximum vehicle body bending stiffness is found out from figure corresponding to offset or dish be optimal solution；M is 3 in the present embodiment
~5；
WhenWhen, then the optimal solution of offset or dish be located at keel biasing extreme position right side, but due to
The limitation for arrangement of marking time, keel are located at the offset or dish Y of right limit position correspondencemaxAs optimal solution.
In another embodiment, on the left of keel truss structure 4 and the spacing of truss structure 5 on the right side of keel be 200mm~
250mm, to meet the width dimensions of fuel tank, deviation range of the keel along the axis of chassis stage casing 2 side to the right be 100mm~
300mm, and the maximum offset of keel is arranged as constraints with do not influence to mark time.
Embodiment
A kind of left and right sides Rigidity Matching method for biasing narrow keel bearing-type the Structure of Bus Body provided by the invention,
Comprise the following steps：
Step 1: the distance for measuring truss and right side truss on the left of original body structure keel is 650mm, it is curved to calculate vehicle body
Stiffness K=1.05 × 107N/m；
Step 2: on the basis of body structure, the left side truss and right side truss of scaled down chassis stage casing keel
Relative distance between axis, the keel left and right sides truss distance L=250mm after distance diminution；
Step 3: keel entirety is biased into extreme position, offset or dish Y to the right along the axis in chassis stage casingmax=
200mm, and calculate vehicle body bending stiffness K nowYmax=1.26 × 107N/m；
Step 4: keel entirety is moved into 10mm to the left along the axis in chassis stage casing again, i.e.,And
Calculate vehicle body bending stiffness
Step 5: compareWith KYmaxSize, now,Therefore vehicle body bending stiffness KYmaxIt is corresponding
Offset or dish Ymax=200mm is optimal solution, realizes the best match of left and right sides rigidity accordingly.
A 12 meters of the narrow keel bearing-type the Structure of Bus Body of biasing is devised according to the present invention, wherein in chassis
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 there is matching well to imitate left and right sides rigidity by the way of keel biasing
Fruit, vehicle body bending stiffness improve 20%, and body frame quality also reduces 107kg.
Although embodiment of the present invention is disclosed as above, it is not restricted in specification and embodiment listed
With it can be applied to various suitable the field of the invention completely, can be easily for those skilled in the art
Other modification is realized, therefore under the universal limited without departing substantially from claim and equivalency range, it is of the invention and unlimited
In specific details and shown here as the legend with description.
Claims (10)
1. one kind biases narrow keel bearing-type the Structure of Bus Body, it is characterised in that including：
Chassis leading portion；
Chassis back segment；
Chassis stage casing, it is located at the middle part of body understructure；And
The chassis stage casing is run through in keel, its axis side to the right along the chassis stage casing；
Truss is fixedly connected with right side truss by connecting cross beam on the left of keel；
Wherein, the spacing of the left side truss and the right side truss is 200mm~250mm, in the longitudinal direction of the left side truss
The movable diagonal brace of Plane Installation, fixed diagonal brace is installed in the fore-and-aft plane of the right side truss, the keel are along chassis stage casing
The deviation range of axis side to the right is 100mm~300mm, and the keel right side of the axis line skew along the chassis stage casing
Truss is located in same fore-and-aft plane with truss structure on the right side of the keel of the chassis leading portion and the chassis back segment.
2. narrow keel bearing-type the Structure of Bus Body is biased as claimed in claim 1, it is characterised in that in the chassis
Section lower section is luggage compartment, and it is divided into the left and right sides by the keel；And
It is crew module above the body understructure.
3. narrow keel bearing-type the Structure of Bus Body is biased as claimed in claim 1 or 2, it is characterised in that the left side
Side truss and the right side truss respectively further comprise：Crew module's longitudinal floor beam, luggage compartment floor longeron and column；
Crew module's longitudinal floor beam is connected with the luggage compartment floor longeron by the column, the movable diagonal brace or
Fixed diagonal brace is separately positioned between adjacent column.
4. narrow keel bearing-type the Structure of Bus Body is biased as claimed in claim 3, it is characterised in that the luggage compartment
Also include luggage compartment floor crossbeam, the crew module also includes crew module's floor crossmember and crew module floor connecting cross beam；
Wherein, in the left side truss and the right side truss both sides, and in the luggage compartment floor crossbeam and described
V-type diagonal brace is respectively arranged between crew module's floor crossmember.
5. narrow keel bearing-type the Structure of Bus Body is biased as claimed in claim 4, it is characterised in that in the chassis
Connected between section and the crew module floor of the chassis leading portion and the crew module floor of the chassis back segment by V-type diagonal brace,
And the top of the V-type diagonal brace is welded in crew module's floor crossmember, the side of the V-type diagonal brace is welded in the left side
On truss, opposite side is welded in left-side.
6. narrow keel bearing-type the Structure of Bus Body is biased as claimed in claim 5, it is characterised in that the luggage compartment
Connected between floor and the chassis leading portion and the chassis back segment by V-type diagonal brace, and the top weldering of the V-type diagonal brace
The luggage compartment floor crossbeam is connected to, the side of the V-type diagonal brace is welded on the left side truss, and opposite side is welded in left side
Enclose.
7. narrow keel bearing-type the Structure of Bus Body is biased as claimed in claim 1, it is characterised in that described movable
Diagonal brace both ends are welded with connector, and it is fixedly connected by bolt with the connection sheet being welded on skeleton.
8. narrow keel bearing-type the Structure of Bus Body is biased as claimed in claim 2, it is characterised in that also include：Combustion
Fuel tank, it is installed on the left of the keel of the luggage compartment between truss structure and keel right side truss structure.
A kind of 9. left and right sides Rigidity Matching method for biasing narrow keel bearing-type the Structure of Bus Body, it is characterised in that bag
Include following steps：
Step 1: calculate 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 keel of scaled down chassis stage casing
Relative distance between line, the keel left and right sides truss distance after distance reduces is L；
Step 3: the overall axis along chassis stage casing of keel side to the right is installed, offset or dish Y, vehicle body bending stiffness is
KY；
Step 4: keel entirety is biased into extreme position, offset or dish Y to the right along the axis in chassis stage casingmax, and
Calculate vehicle body bending stiffness K nowYmax；
Step 5: keel entirety is moved into 0.05L to the left along the axis in chassis stage casing, now keel offset or dish isI.e.And calculate vehicle body bending stiffness
Step 6: work asWhen, it is overall overall to right-hand offset to the initial position before right-hand offset and keel in keel
Multiple equidistant points are taken between extreme position afterwards, record vehicle body bending corresponding to keel offset or dish and the offset or dish respectively
Rigidity, wherein offset or dish corresponding to maximum vehicle body bending stiffness is final offset or dish；
WhenWhen, offset or dish YmaxAs final offset or dish.
10. the left and right sides Rigidity Matching method of narrow keel bearing-type the Structure of Bus Body is biased as claimed in claim 9,
It is characterised in that it includes：The left side truss and the right side truss spacing are 200mm~250mm, and the keel are along the bottom
The deviation range of frame stage casing axis side to the right is 100mm~300mm.
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| CN107719472B (en) * | 2017-11-24 | 2024-04-26 | 河南少林客车股份有限公司 | Two-section type passenger car underframe and passenger car using same |
| CN109941346B (en) * | 2017-12-21 | 2021-11-09 | 湖南中车时代电动汽车股份有限公司 | Full-load vehicle frame middle section structure |
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Effective date of registration: 20210909 Address after: No.9, Jinlong Road, Jimei District, Xiamen City, Fujian Province Patentee after: XIAMEN KING LONG UNITED AUTOMOTIVE INDUSTRY Co.,Ltd. Address before: 130000 No. 2699 Qianjin Street, Jilin, Changchun Patentee before: Jilin University |