CN104494701B - A kind of passenger-carrying chassis foundation structure of overall stress - Google Patents
A kind of passenger-carrying chassis foundation structure of overall stress Download PDFInfo
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- CN104494701B CN104494701B CN201410847078.7A CN201410847078A CN104494701B CN 104494701 B CN104494701 B CN 104494701B CN 201410847078 A CN201410847078 A CN 201410847078A CN 104494701 B CN104494701 B CN 104494701B
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- outrigger
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- passenger
- overall stress
- foundation structure
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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
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
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Abstract
The present invention relates to Bus Technology field, refer in particular to a kind of passenger-carrying chassis foundation structure of overall stress, including two longitudinal girders and some crossbeams, some crossbeams are distributed in the different height aspect and different longitudinal position of two longitudinal girders, and some crossbeam joggles form double longeron multilayer soles of overall stress in two longitudinal girders；The front portion of described pair of longeron multilayer sole is connected with front axle bracket, and the front axle bracket is fixed by two longitudinal girders；The rear portion of described pair of longeron multilayer sole is connected with rear axle stand；The rear axle stand is fixed by two longitudinal girders；This pair of longeron multilayer sole is simple in construction, and overall structure is rigidly good, and moulding process and assembly technology are simple, forward and backward crane span structure has fully positioning and firm connection with double longeron multilayer soles, overall stress is realized, and wheelbase and wheelspan can be adjusted freely, be easy to the design of seriation automobile chassis.
Description
Technical field
The present invention relates to automobile technical field, a kind of passenger-carrying chassis foundation structure of overall stress is refered in particular to.
Background technology
Either orthodox car or new-energy automobile, body lightening turn into study hotspot, especially to electric automobile,
Light-weighted meaning is bigger, requires higher to light-weighted.In order to reach significant light weight effect, it is necessary to from material, structure
With new solution is found in manufacturing process.
Existing passenger train plan is divided into monocoque construction and chassis frame and body construction, the former chassis structure part by
A series of space between space truss structure compositions, truss is used to store luggage, continues welded body knot on chassis structure
Structure, the space of formation is used for passenger area, the lighter in weight of this overall stress type bearing vehicle body, but passenger's zone position is higher,
Height of car is consequently increased, and the body structure is mainly used in sightseeing bus.The chassis structure of the latter is mainly made up of double longerons,
Arrange that series installation point is used for installation chassis parts and compartment on longeron, therefore two longerons are both installation foundation part,
It is main stress members again, the body structure is mainly used in bus, still, the chassis structure exists following several big scarce
Fall into：1st, weight and size is big, weight is big；2nd, longeron spatial form is complicated, is molded more difficult；3rd, the hard spot position on longeron is fixed,
Lack adjustability, it is difficult to support the exploitation of tandem product.
The content of the invention
The purpose of the present invention is to solve the shortcomings of the prior art a kind of passenger-carrying chassis foundation structure of overall stress is provided,
It had both combined the advantage of overall stress type body structure and double longeron body structures, and its shortcoming is prevented effectively from again, was ensureing whole
While body structural rigidity is excellent, lightweight is realized significantly, moulding process and assembly technology is simplified, and bottom can be effectively installed
Disc system, can neatly adjust wheelbase and wheelspan again, support seriation chassis development.
To achieve the above object, the passenger-carrying chassis foundation structure of a kind of overall stress of the invention, including two longitudinal directions are big
Beam and some crossbeams, some crossbeams are distributed in the different height aspect and different longitudinal position of two longitudinal girders, some crossbeams
Joggle forms double longeron multilayer soles of overall stress in two longitudinal girders；Described pair of the anterior of longeron multilayer sole connects
Front axle bracket is connected to, the front axle bracket is fixed by two longitudinal girders；The rear portion connection of described pair of longeron multilayer sole
There is rear axle stand；The rear axle stand is fixed by two longitudinal girders；The rear axle stand includes preceding outrigger, rear outrigger, front hanging
Ear mount and rear hangers seat, the preceding outrigger, rear outrigger distinguish joggle in longitudinal girder, the front hanging ear mount, rear hangers seat correspondence
It is fixed on the preceding outrigger and rear outrigger.
Preferably, the overall U-shaped of the front axle bracket, two vertical end medial surfaces of U-shaped front axle bracket are big with longitudinal direction
The lateral surface laminating of beam is fixed；
The inside of the longitudinal girder is inserted with connection inserted link, and one end of the connection inserted link is fixed with longitudinal girder to be connected
Connect, the other end of the connection inserted link is fixedly connected with U-shaped front axle bracket.
Preferably, the quantity of the preceding outrigger and rear outrigger is respectively two, two preceding outriggers are in horizontal distribution or vertical
It is distributed, outrigger is distributed in horizontal distribution or vertically after two, is connected between two preceding outriggers after front span beam, two between outrigger
Rear bridge is connected with, the front hanging ear mount, rear hangers seat are correspondingly arranged in the front span beam, rear bridge respectively.
Preferably, the quantity of the preceding outrigger and rear outrigger is respectively four, outrigger is in respectively after four preceding outriggers and four
Hollow is distributed, and is connected between two adjacent preceding outriggers after front span beam, adjacent two and is connected with rear bridge between outrigger,
The front hanging ear mount, rear hangers seat are correspondingly arranged in the front span beam, rear bridge respectively.
Preferably, the cross section of the longitudinal girder is in inverted L shape or T fonts, some crossbeams distinguish horizontal joggle
In two aspects up and down of inverted L shape longitudinal girder or T font longitudinal girders, two layers of floor sole is formed.
Preferably, the cross section of the longitudinal girder is in I-shaped, some crossbeams distinguish horizontal joggle in I-shaped
Two aspects up and down of type longitudinal girder, form two layers of floor sole.
Preferably, the cross section of the longitudinal girder is inFont, some crossbeams distinguish horizontal joggle inWord
Two aspects up and down of type longitudinal girder, form two layers of floor sole.
Preferably, the longitudinal girder and crossbeam are aluminium alloy extrusions beam；Cloth in the cross section of the longitudinal girder
Put some sub- cavitys, the geometrical relationship of the sub- cavity and crossbeam formation joggle.
Preferably, the longitudinal girder and crossbeam are the girder steel of square-section.
Beneficial effects of the present invention：A kind of passenger-carrying chassis foundation structure of overall stress of the present invention, including two longitudinal directions
Crossbeam and some crossbeams, some crossbeams are distributed in the different height aspect and different longitudinal position of two longitudinal girders, some horizontal strokes
Beam joggle forms double longeron multilayer soles of overall stress in two longitudinal girders, is formed by longitudinal girder with crossbeam joggle
Double longeron multilayer soles, make forward and backward crane span structure be fixed respectively by two longitudinal girders；It had both combined overall stress type
The advantage of body structure and double longeron body structures, is prevented effectively from its shortcoming again, while overall structure stiff super is ensured,
Realize lightweight significantly, simplify moulding process and assembly technology, can effective installation chassis system, can neatly adjust again
Bearing away from and wheelspan, support seriation chassis development.
Brief description of the drawings
Fig. 1 is the dimensional structure diagram of the embodiment of the present invention one.
The structural representation that Fig. 2 is connected for the front axle bracket of the embodiment of the present invention one with longitudinal girder.
The structural representation that Fig. 3 is connected for the rear axle stand of the embodiment of the present invention one with longitudinal girder.
The structural representation that Fig. 4 is connected for the rear axle stand of the embodiment of the present invention two with longitudinal girder.
The structural representation that Fig. 5 is connected for the rear axle stand of the embodiment of the present invention three with longitudinal girder.
The dimensional structure diagram that Fig. 6 is connected for the rear axle stand of the embodiment of the present invention three with longitudinal girder.
Fig. 7 is the close-up schematic view at A in Fig. 1.
Reference includes：
1-longitudinal girder, 11-crossbeam 12-sub- cavity
2-bis- longeron multilayer sole 3-front axle bracket, 31-vertical ends
32-connection inserted link, 4-rear axle stand 41-preceding outrigger
42-rear 43-front hanging of outrigger ear mount 44-rear hangers seat
45-front span beam 46-rear bridge.
Embodiment
The present invention is described in detail below in conjunction with accompanying drawing.
Embodiment one.
As shown in Fig. 1 to Fig. 3, Fig. 7, a kind of passenger-carrying chassis foundation structure of overall stress of the invention, including two vertical
To crossbeam 1 and some crossbeams 11, some crossbeams 11 are distributed in the longitudinal position of different height aspect and difference of two longitudinal girders 1
Put, some joggles of crossbeam 11 form double longeron multilayer soles 2 of overall stress in two longitudinal girders 1；Described pair of longeron is more
The front portion of layer sole 2 is connected with front axle bracket 3, and the front axle bracket 3 is fixed by two longitudinal girders 1；Described pair of longeron
The rear portion of multilayer sole 2 is connected with rear axle stand 4；The rear axle stand 4 is fixed by two longitudinal girders 1.Pass through longitudinal direction
Crossbeam 1 forms double longeron multilayer soles 2 with the joggle of crossbeam 11, forward and backward crane span structure 4 is carried out respectively by two longitudinal girders 1
It is fixed；It had both combined the advantage of overall stress type body structure and double longeron body structures, and its shortcoming is prevented effectively from again, was protecting
While demonstrate,proving overall structure stiff super, lightweight is realized significantly, moulding process and assembly technology is simplified, can effectively be pacified
Cartridge chassis system, can neatly adjust wheelbase and wheelspan again, support seriation chassis development.
Preferably, the overall U-shaped of the front axle bracket 3, two medial surfaces of vertical end 31 of U-shaped front axle bracket 3 are with indulging
Fit and fix to the lateral surface of crossbeam 1；The inside of the longitudinal girder 1 is inserted with connection inserted link 32, the connection inserted link 32
One end is fixedly connected with longitudinal girder 1, and the other end of the connection inserted link 32 is fixedly connected with U-shaped front axle bracket 3.Front axle bracket 3 is adopted
With U-shaped structure, its is simple in construction, and bonding strength is high.Two medial surfaces of vertical end 31 are fitted with the lateral surface of longitudinal girder 1
It is fixed.Specifically, the medial surface of front axle bracket 3 is welded with steel plate, and the longitudinal girder 1 passes through another steel plate and the steel of front axle bracket 3
Plate is fixedly connected.The connection inserted link 32 of the present embodiment can use steel pipe, and one end that steel pipe is connected with longitudinal girder 1 uses bolt
Connection, one end that steel pipe is connected with front axle bracket 3 the firm connection of front axle bracket 3 and longitudinal girder 1 is realized using welding.
The rear axle stand 4 of the present embodiment include preceding outrigger 41, rear outrigger 42, front hanging ear mount 43 and rear hangers seat 44, it is described before
Outrigger 41, the difference joggle of rear outrigger 42 in longitudinal girder 1, the front hanging ear mount 43, the correspondence of rear hangers seat 44 be fixed on it is described before
Outrigger 41 and rear outrigger 42.When current outrigger 41, rear outrigger 42 possess sufficient intensity, the rear axle stand 4 of the present embodiment can be using single
One preceding outrigger 41 and single rear outrigger 42.Preceding outrigger 41 and rear outrigger 42 can flexibly joggle in the difference of longitudinal girder 1
Position, front hanging ear mount 43, the correspondence of rear hangers seat 44 are fixed on preceding outrigger 41 and rear outrigger 42 so that front hanging ear mount 43, rear hangers
Spacing between seat 44 can be adjusted flexibly, quick and easy for installation, be adjusted the need for meeting different wheelbases.
The cross section of the longitudinal girder 1 of the present embodiment can in inverted L shape, T fonts, it is I-shaped orThe uiform section shape such as font
Shape.When the cross section of longitudinal girder 1 can be in inverted L shape, some crossbeams 11 distinguish horizontal joggle in inverted L shape longitudinal girder
1 two aspects up and down, form two layers of floor sole.The longitudinal girder 1 of inverted L shape can have two locating surfaces, and one is water
The locating surface that flat joggle is constituted, another is the locating surface that vertical joggle is constituted, and meeting automobile by above-mentioned locating surface carries bottom
The formation of dish structure and the connection positioning with front axle bracket 3, rear axle stand 4, form two layers of floor sole.
When the cross section of longitudinal girder 1 is in T fonts, it is longitudinally big in T fonts that some crossbeams 11 distinguish horizontal joggle
Two aspects up and down of beam 1, form two layers of floor sole.Longitudinal girder 1 is designed as T fonts, increases determining for longitudinal girder 1
Plane, not only meets front axle bracket 3, the positioning of rear axle stand 4, also makes automobile bearing chassis formation Tipple Bottom dish structure, designs simultaneously
Go out battery space and motor space, make full use of the space on chassis.The longitudinal girder 1 of the T fonts can integral drawing and forming,
It can be formed by the corner position clamping grafting beam in longitudinal girder 1.The medial surface of front axle bracket 3 is welded with steel plate, the steel plate
Both sides extend and be connected with rigid frame with right angle, steel square between the outside of front axle bracket 3, the steel plate of the front axle bracket 3 of longitudinal girder 1
One right-angle surface of frame is connected with longitudinal girder 1, and another right-angle surface of rigid frame with right angle is connected with steel plate, realizes front axle bracket 3 and longitudinal direction
The firm connection of crossbeam 1.
When the cross section of longitudinal girder 1 is in I-shaped, some crossbeams 11 distinguish horizontal joggle in I-shaped longitudinal direction
Two aspects up and down of crossbeam 1, form two layers of floor sole.Two horizontal joggles up and down of the I-shaped longitudinal girder 1
Beam has wider clamping face, has preferable positioning in crossbeam 11 therein to joggle, makes the connection of two layers of floor sole
Intensity is higher.The I-shaped longitudinal girder 1 not only meets front axle bracket 3, the positioning of rear axle stand 4, is also formed automobile bearing chassis
Tipple Bottom dish structure, while designing battery space and motor space, makes full use of the space on chassis.
When the cross section of longitudinal girder 1 is inDuring font, some crossbeams 11 distinguish horizontal joggle inFont longitudinal direction
Two aspects up and down of crossbeam 1, form two layers of floor sole.ShouldTwo aspects up and down of font longitudinal girder 1 equally have
There is wider clamping face, there is preferable positioning in crossbeam 11 therein to joggle, make the bonding strength of two layers of floor sole
It is higher, meet the structural strength on chassis.ShouldFont longitudinal girder 1 not only meets front axle bracket 3, the positioning of rear axle stand 4, also makes vapour
Car bearing chassis formation Tipple Bottom dish structure, while designing battery space and motor space, makes full use of the space on chassis.
Preferably, the longitudinal girder 1 of the present embodiment and crossbeam 11 are aluminium alloy extrusions beam；The longitudinal girder 1
Some sub- cavitys 12, the geometrical relationship of the sub- cavity 12 and the formation joggle of crossbeam 11 are arranged in cross section.The aluminium of drawing and forming
Section bar longitudinal girder 1 is internally provided with sub- cavity 12.The sub- cavity 12 turn into aluminium alloy type the joggle of crossbeam 11 clamping face with
Locating surface, makes the joggle of aluminium section bar firm.
The longitudinal girder 1 and crossbeam 11 of passenger-carrying chassis of the present invention can also be adopted as the girder steel or other materials of square-section
Constitute, equally can also realize that the joggle of passenger-carrying chassis is installed, meet the bearing strength of passenger-carrying chassis and the peace of other automobile assemblies
Dress is fixed.
Embodiment two.
As shown in figure 4, the present embodiment and the difference of embodiment one are, the number of the preceding outrigger 41 and rear outrigger 42
Amount is respectively two, and two preceding outriggers 41 are in horizontal distribution or are distributed vertically, and outrigger 42 is distributed in horizontal distribution or vertically after two,
It is connected between two preceding outriggers 41 after front span beam 45, two and rear bridge 46 is connected between outrigger 42, the front hanging ear mount 43,
Hangers seat 44 is correspondingly arranged in the front span beam 45, rear bridge 46 respectively afterwards.Using multiple preceding outrigger 41 and rear outrigger 42 structures
Rear axle stand 4, can further improve the bonding strength of rear axle stand 4, the strong point of high intensity is provided for the installation of rear axle assy,
Front span beam 45, rear bridge 46 can share the stress of front hanging ear mount 43 and rear hangers seat 44, and be transferred to the preceding He of outrigger 41 respectively
Outrigger 42, make the structure stress intensity of passenger-carrying chassis more preferable afterwards.
The remainder of the present embodiment is identical with embodiment one, repeats no more here.
Embodiment three.
As shown in Fig. 5 ~ Fig. 6, the present embodiment and the difference of embodiment two are, the preceding outrigger 41 and rear outrigger 42
Quantity be respectively that outrigger 42 is respectively distributed in hollow after four, four preceding outriggers 41 and four, adjacent two preceding outriggers 41 it
Between be connected with after front span beam 45, adjacent two rear bridge 46 be connected between outrigger 42, the front hanging ear mount 43, rear hangers seat
44 are correspondingly arranged in the front span beam 45, rear bridge 46 respectively.Further, the present embodiment uses the preceding outrigger 41 that hollow is distributed
Structure and the structure of rear outrigger 42, the bonding strength of rear axle stand 4 is further improved on the basis of embodiment two, is rear axle assy
The strong point for providing high intensity is installed, front span beam 45, rear bridge 46 can share the stress of front hanging ear mount 43 and rear hangers seat 44,
And preceding outrigger 41 and rear outrigger 42 are transferred to, make the structure stress intensity of passenger-carrying chassis more preferable.
The remainder of the present embodiment is identical with embodiment two, repeats no more here.
Above content is only presently preferred embodiments of the present invention, for one of ordinary skill in the art, according to the present invention's
Thought, will change in specific embodiments and applications, and this specification content should not be construed as to the present invention
Limitation.
Claims (9)
1. a kind of passenger-carrying chassis foundation structure of overall stress, it is characterised in that：Including two longitudinal girders and some crossbeams, if
Dry crossbeam is distributed in the different height aspect and different longitudinal position of two longitudinal girders, and some crossbeam joggles are big in two longitudinal directions
Beam forms double longeron multilayer soles of overall stress；
The front portion of described pair of longeron multilayer sole is connected with front axle bracket, and the front axle bracket is consolidated by two longitudinal girders
It is fixed；
The rear portion of described pair of longeron multilayer sole is connected with rear axle stand；The rear axle stand is consolidated by two longitudinal girders
It is fixed；
The rear axle stand includes preceding outrigger, rear outrigger, front hanging ear mount and rear hangers seat, the preceding outrigger, rear outrigger difference joggle
In longitudinal girder, the front hanging ear mount, rear hangers seat correspondence are fixed on the preceding outrigger and rear outrigger.
2. a kind of passenger-carrying chassis foundation structure of overall stress according to claim 1, it is characterised in that：The front axle bracket
Overall U-shaped, two vertical end medial surfaces of U-shaped front axle bracket fit fixation with the lateral surface of longitudinal girder；
The inside of the longitudinal girder is inserted with connection inserted link, and one end of the connection inserted link is fixedly connected with longitudinal girder, institute
The other end for stating connection inserted link is fixedly connected with U-shaped front axle bracket.
3. a kind of passenger-carrying chassis foundation structure of overall stress according to claim 1, it is characterised in that：The preceding outrigger
Be respectively two with the quantity of rear outrigger, two preceding outriggers in horizontal distribution or vertical distribution, after two outrigger in horizontal distribution or
It is connected between vertical distribution, two preceding outriggers after front span beam, two and rear bridge is connected between outrigger, the front hanging ear mount,
Hangers seat is correspondingly arranged in the front span beam, rear bridge respectively afterwards.
4. a kind of passenger-carrying chassis foundation structure of overall stress according to claim 1, it is characterised in that：The preceding outrigger
It is respectively four with the quantity of rear outrigger, outrigger is respectively distributed in hollow after four preceding outriggers and four, two adjacent preceding outriggers
Between be connected with after front span beam, adjacent two rear bridge be connected between outrigger, the front hanging ear mount, rear hangers seat are right respectively
The front span beam, rear bridge should be arranged at.
5. a kind of passenger-carrying chassis foundation structure of overall stress according to claim 1, it is characterised in that：The longitudinal direction is big
The cross section of beam is in inverted L shape or T fonts, and it is longitudinally big in inverted L shape longitudinal girder or T fonts that some crossbeams distinguish horizontal joggle
Two aspects up and down of beam, form two layers of floor sole.
6. a kind of passenger-carrying chassis foundation structure of overall stress according to claim 1, it is characterised in that：The longitudinal direction is big
The cross section of beam is in I-shaped, and some crossbeams distinguish horizontal joggle in two aspects, shape up and down of I-shaped longitudinal girder
Into two layers of floor sole.
7. a kind of passenger-carrying chassis foundation structure of overall stress according to claim 1, it is characterised in that：The longitudinal direction is big
The cross section of beam is inFont, some crossbeams distinguish horizontal joggle inTwo aspects, shape up and down of font longitudinal girder
Into two layers of floor sole.
8. a kind of passenger-carrying chassis foundation structure of overall stress according to claim 1 ~ 7 any one, it is characterised in that：
The longitudinal girder and crossbeam are aluminium alloy extrusions beam；Some sub- cavitys are arranged in the cross section of the longitudinal girder, it is described
The geometrical relationship of sub- cavity and crossbeam formation joggle.
9. a kind of passenger-carrying chassis foundation structure of overall stress according to claim 1 ~ 4 any one, it is characterised in that：
The longitudinal girder and crossbeam are the girder steel of square-section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410847078.7A CN104494701B (en) | 2014-12-31 | 2014-12-31 | A kind of passenger-carrying chassis foundation structure of overall stress |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410847078.7A CN104494701B (en) | 2014-12-31 | 2014-12-31 | A kind of passenger-carrying chassis foundation structure of overall stress |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104494701A CN104494701A (en) | 2015-04-08 |
| CN104494701B true CN104494701B (en) | 2017-09-26 |
Family
ID=52936187
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410847078.7A Expired - Fee Related CN104494701B (en) | 2014-12-31 | 2014-12-31 | A kind of passenger-carrying chassis foundation structure of overall stress |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105015621B (en) * | 2015-06-30 | 2017-08-08 | 东莞中山大学研究院 | A kind of low-floor electric motor coach lightweight chassis structure |
| CN106005014B (en) * | 2016-07-29 | 2019-12-17 | 东莞中山大学研究院 | Chassis module structure of light-weight minibus |
| CN109131564B (en) * | 2018-08-27 | 2021-01-15 | 武汉智能控制工业技术研究院有限公司 | Aluminum alloy automobile chassis hard spot system and automobile |
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| CN2302157Y (en) * | 1997-03-24 | 1998-12-30 | 山东海山集团总公司 | Vibration damper for tractor |
| CN101214784A (en) * | 2007-12-28 | 2008-07-09 | 郑州宇通客车股份有限公司 | Low-entrance double-layer bus chassis |
| CN103183054A (en) * | 2011-12-29 | 2013-07-03 | 东莞三新电动汽车技术有限公司 | Lightweight underframe for bus |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008045008A1 (en) * | 2008-08-29 | 2010-03-04 | Man Nutzfahrzeuge Aktiengesellschaft | Modular multifunction bearing block |
| CN201329903Y (en) * | 2008-12-31 | 2009-10-21 | 东风汽车有限公司 | Combined frame |
| CN101602378B (en) * | 2009-06-30 | 2013-05-08 | 江苏友邦精工实业有限公司 | Vehicle frame beam for highway passenger vehicles and touring buses |
| CN102809470B (en) * | 2011-06-03 | 2014-11-26 | 上汽依维柯红岩商用车有限公司 | Bending test method for ladder type frame assembly of heavy automobile |
| CN204020994U (en) * | 2014-07-30 | 2014-12-17 | 郑州宇通客车股份有限公司 | A kind of chassis frame and use the vehicle of this chassis frame |
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- 2014-12-31 CN CN201410847078.7A patent/CN104494701B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2302157Y (en) * | 1997-03-24 | 1998-12-30 | 山东海山集团总公司 | Vibration damper for tractor |
| CN101214784A (en) * | 2007-12-28 | 2008-07-09 | 郑州宇通客车股份有限公司 | Low-entrance double-layer bus chassis |
| CN103183054A (en) * | 2011-12-29 | 2013-07-03 | 东莞三新电动汽车技术有限公司 | Lightweight underframe for bus |
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