CN2402521Y - Bus chassis - Google Patents
Bus chassis Download PDFInfo
- Publication number
- CN2402521Y CN2402521Y CN 99230101 CN99230101U CN2402521Y CN 2402521 Y CN2402521 Y CN 2402521Y CN 99230101 CN99230101 CN 99230101 CN 99230101 U CN99230101 U CN 99230101U CN 2402521 Y CN2402521 Y CN 2402521Y
- Authority
- CN
- China
- Prior art keywords
- side member
- underframe
- crossbeam
- longeron
- fixed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a passenger car chassis. A front and rear first level foot step can be achieved and the distance of passenger car chassis to the ground is smaller than 380 mm and thus passengers can get on and off conveniently. A front chassis section is composed of a front longitudinal beam, a front cross beam, a front door cross beam, a front bridge longitudinal beam and a front door foot step frame. A middle chassis section is composed of a middle longitudinal beam, a middle cross beam and a rear door foot step frame. The front and the rear end of the longitudinal beam are connected with the front and the rear sections of the chassis respectively through connecting the cross beam and a vertical column of a rear bridge. The upper sides of the front longitudinal beam and the middle longitudinal beam are in the same level and the distance of the upper sides to the ground is smaller than 380 mm. A rear section of the chassis is composed of a rear longitudinal beam, a cross beam of a rear bridge and an engine supporting frame and the rear chassis section is higher than the middle longitudinal beam. A front and a rear air spring supporting frames, a front and a rear shock absorber supporting frames and a front and a rear distance rod supporting frames are arranged on the front and the rear sections of the chassis.
Description
The utility model relates to a kind of underframe of coach, relates in particular to the underframe of large and medium-sized urban bus.
At present, domestic large and medium-sized bus generally adopts the steel spring suspension frame structure, so the underframe of coach ground clearance is higher mostly, adopt secondary or the multistage structure of marking time thereby cause forward and backward passenger door to be marked time, passenger getting on/off inconvenience especially makes some women, children and old, weak, sick, residual passenger in the comparatively difficulty of getting on or off the bus also.The passenger vehicle of Kai Fa a kind of super-low floor in recent years, though the stage casing of underframe of coach ground-surface height≤450mm of plane separation on it, because the underframe stage casing is the frame-shaped structure of upper and lower two-layer longeron, structure is complicated, has increased the difficulty of production, manufacturing.
The purpose of this utility model provides a kind of underframe of coach, matches with air suspension, and preceding, the stage casing of underframe is at same horizontal surface, and plane terrain clearance≤380mm on it realizes that forward and backward passenger door is marked time to mark time for one-level, and makes whole Undercarriage structure comparatively simple.
The utility model is that the technical scheme that achieves the above object is: a kind of underframe of coach, comprise the girder work that constitutes by underframe leading portion, stage casing, back segment, front end is fixed with the front side member of front cross rail, front end by the Qianmen crossbeam be connected with the front side member rear end, the rear end be fixed be connected crossbeam the door subtype before sleeper, the Qianmen that is connected in Qianmen crossbeam and the front side member right side frame of marking time constitutes the underframe leading portion, air bellow support, front shock absorber support before preceding sleeper is provided with, the Qianmen crossbeam is provided with the forward thrust shaft bar; The middle longeron that is connected with intermediate transverse girder, the back door that is arranged on intermediate transverse girder and the middle longeron right side frame of marking time constitutes the underframe stage casing, and middle longeron front end is connected with being connected crossbeam, and rear portion and back axle A-pillar are connected, front side member is concordant with the last plane of middle longeron, front side member and middle longeron ground clearance≤380mm; Front end is fixed with the back axle A-pillar, the rear end is by back axle rear column and the affixed floor side member of engine bed, the back axle crossbeam that is connected with floor side member constitutes the underframe back segment, and floor side member is higher than middle longeron, air bellow support, rear shock absorber support and back track bar bracket after the back axle crossbeam is provided with.
The utility model adopts the advantage of technique scheme to be: at the road clearance that guarantees underframe of coach, adapted air spring suspension structure, preceding, the stage casing longeron of underframe of coach is on same horizontal surface, and last plane is overhead highly near minimum, make the last plane terrain clearance≤380mm of underframe of coach, really reach super-low floor.And preceding, the stage casing of underframe are propons district and the complete level of passenger zone, realize that the forward and backward layer of marking time of passenger door is one-level and marks time, and make things convenient for passenger's passenger vehicle up and down especially, make the passenger increase the safety of passenger getting on/off comfortablely by bus.Because single longeron formula structure is adopted in the stage casing of underframe, make Undercarriage structure simple simultaneously, convenient production manufactured.
The utility model will be further described below in conjunction with accompanying drawing:
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is that the A of Fig. 1 is to scheme drawing.
As Fig. 1, shown in 2, underframe of coach of the present utility model is by leading portion, stage casing and back segment constitute the syllogic girder work, front end is welded with two front side members 24 of front cross rail 25, front end is by Qianmen crossbeam 2 and the welding of front side member 24 rear ends, the rear end is welded with the preceding sleeper 22 of door subtype that connects crossbeam 5, and mark time frame 1 of the Qianmen that is connected in Qianmen crossbeam 2 and front side member 24 right sides constitutes the underframe of coach leading portion, air bellow support 4 and front shock absorber support 21 before preceding sleeper 4 is provided with, Qianmen crossbeam 5 is provided with forward thrust shaft bar 3, and frame 1 and front side member 24 are marked time on same horizontal surface in the Qianmen.The stage casing of underframe is a single-beam longeron formula structure, it is by welding two middle longerons 6 that are connected with several intermediate transverse girders 7, the back door pedal frame 8 that welding is connected in intermediate transverse girder 7 and middle longeron 6 right sides constitutes the underframe stage casing, back door pedal frame 8 and longeron 6 are also on same horizontal surface, middle longeron 6 front ends are welded with connection crossbeam 5 and link to each other with the underframe leading portion, the rear portion of middle longeron 6 is welded with several back axle A-pillars 28, be connected with the back segment of underframe, the front side member 24 of underframe is concordant with the last plane of middle longeron 6, and height≤380mm overhead, just underframe before, the stage casing is that the propons district keeps concordant with passenger zone, thereby before making, after the frame 1 of marking time, 8 overhead height≤380mm, really accomplished ultralow chassis of bus, and mark time before and after making and accomplished really that also one-level marks time, made things convenient for old especially, a little less than, sick, residual and child gets on or off the bus, and has improved the safety of passenger getting on/off.Front end is welded with propons A-pillar 28, the rear end is by propons rear column 30 and engine bed 14 welding or with two floor side members 17 of fastener bonded assembly, and the several back axle crossbeams 9 that are welded on floor side member 17 constitute the underframe back segment, and floor side member 17 is higher than middle longeron 6, on back axle crossbeam 9, also be welded with back air bellow support 12, back shock bracket device 17, back track bar bracket 10, on the back axle crossbeam 9 at the rear portion of floor side member 17, be provided with battery cell bracket 13.Each longeron of whole underframe of coach and each crossbeam adopt the rectangular tube welding, and match with self-supporting body, make complete vehicle structure simple, and be safe and reliable.
For further improving the strength and stiffness of underframe of coach, shown in Fig. 1～2, the bottom of two preceding sleepers 22 also is welded with two and strengthens longeron 26, and by the propons column 27 between preceding sleeper 22 and the reinforcement longeron 26, constitute stationary frame structure with preceding sleeper 22, strengthen for two also being welded with crossbeam 20 between the longeron 26.Strength beam 23, middle strength beam 18 and back strength beam 15 before between the floor side member 17 of the middle longeron 6 in the front side member 24 of underframe leading portion, stage casing and back segment, being welded with respectively.And can be welded with as shown in Figure 1 brace panel 19 in each longitudinal and cross beam intersection.Both sides and 9 on back axle crossbeam at floor side member 17 also are welded with wheel cover frame 11.Be welded with back axle A-pillar 28 and diagonal brace 29 between middle longeron 6 and the floor side member 17, the bottom at floor side member 17 rear portions also has back axle rear column 30 and bottom girder 31 to constitute fixing framed structure, with the rigidity of raising floor side member 17, and also be welded with diagonal brace 29 between rear column 30 and the floor side member 17.
Claims (4)
1, a kind of underframe of coach comprises the girder work that is made of underframe leading portion, stage casing, back segment, it is characterized in that:
A, front end are fixed with the front side member (24) of front cross rail (25), front end by Qianmen crossbeam (2) be connected with front side member (24) rear end, the rear end be fixed be connected crossbeam (5) the door subtype before sleeper (22), the Qianmen that is connected in Qianmen crossbeam (2) and front side member (24) the right side frame (1) of marking time constitutes the underframe leading portion, air bellow support (4), front shock absorber support (21) before preceding sleeper (22) is provided with, Qianmen crossbeam (2) is provided with forward thrust shaft bar (3);
B, the middle longeron (6) that is connected with intermediate transverse girder (7), the back door that is arranged on intermediate transverse girder (7) and middle longeron (6) the right side frame (8) of marking time constitutes the underframe stage casing, in longeron (6) front end be connected crossbeam (5) and be connected, rear portion and back axle A-pillar (28) are connected, front side member (24) is concordant with the last plane of middle longeron (6), front side member (24) and middle longeron (6) ground clearance≤380mm;
C, front end are fixed with back axle A-pillar (28), the rear end is by back axle rear column (30) and the affixed floor side member (17) of engine bed (14), the back axle crossbeam (9) that is connected with floor side member (17) constitutes the underframe back segment, and floor side member (17) is higher than middle longeron (6), and back axle crossbeam (9) is provided with back air bellow support (12), rear shock absorber support (16) and back track bar bracket (10).
2, underframe of coach according to claim 1, it is characterized in that: preceding sleeper (22) bottom also is fixed with strengthens longeron (26), and, strengthen also being fixed with crossbeam (20) on the longeron (26) by propons column (27) and preceding sleeper (22) formation stationary frame structure.
3, underframe of coach according to claim 1 is characterized in that: front side member (24), middle longeron (6) and floor side member (17) are fixed with preceding strength beam (23), middle strength beam (18) and back strength beam (15) respectively.
4, underframe of coach according to claim 1, it is characterized in that: floor side member (17) and back axle crossbeam (9) also are fixed with wheel cover frame (11), middle longeron (6) is connected with diagonal brace (29) with floor side member (17), floor side member (17) rear portion has back axle rear column (30) and bottom girder (31) to constitute stationary frame structure, and also is fixed with diagonal brace (29) between back axle rear column (30) and the floor side member (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99230101 CN2402521Y (en) | 1999-11-26 | 1999-11-26 | Bus chassis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99230101 CN2402521Y (en) | 1999-11-26 | 1999-11-26 | Bus chassis |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2402521Y true CN2402521Y (en) | 2000-10-25 |
Family
ID=34019246
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99230101 Expired - Fee Related CN2402521Y (en) | 1999-11-26 | 1999-11-26 | Bus chassis |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2402521Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101817367A (en) * | 2010-04-13 | 2010-09-01 | 重庆恒通客车有限公司 | Two-stage stepping chassis and automotive chassis overhang structure of passenger car with front-located engine |
| CN101934820A (en) * | 2010-04-13 | 2011-01-05 | 重庆恒通客车有限公司 | Two-stage stepping passenger bus with front engine |
| CN103863041A (en) * | 2014-03-26 | 2014-06-18 | 安徽安凯汽车股份有限公司 | Fixing structure of front two-step bus air suspension |
| CN103963797A (en) * | 2014-03-26 | 2014-08-06 | 南车眉山车辆有限公司 | Light weight wagon chassis |
| CN107719472A (en) * | 2017-11-24 | 2018-02-23 | 河南少林客车股份有限公司 | A kind of two-part underframe of coach and the car using the underframe of coach |
| CN107766679A (en) * | 2017-11-15 | 2018-03-06 | 厦门理工学院 | A kind of redesign method of the underframe of coach module based on interface digital expression |
| 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 |
-
1999
- 1999-11-26 CN CN 99230101 patent/CN2402521Y/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101817367A (en) * | 2010-04-13 | 2010-09-01 | 重庆恒通客车有限公司 | Two-stage stepping chassis and automotive chassis overhang structure of passenger car with front-located engine |
| CN101934820A (en) * | 2010-04-13 | 2011-01-05 | 重庆恒通客车有限公司 | Two-stage stepping passenger bus with front engine |
| CN101934820B (en) * | 2010-04-13 | 2012-09-12 | 重庆恒通客车有限公司 | Two-stage stepping passenger bus with front engine |
| CN103863041A (en) * | 2014-03-26 | 2014-06-18 | 安徽安凯汽车股份有限公司 | Fixing structure of front two-step bus air suspension |
| CN103963797A (en) * | 2014-03-26 | 2014-08-06 | 南车眉山车辆有限公司 | Light weight wagon chassis |
| CN103863041B (en) * | 2014-03-26 | 2015-12-16 | 安徽安凯汽车股份有限公司 | A kind of secondary is marked time the fixed sturcture of bus front air suspension |
| CN103963797B (en) * | 2014-03-26 | 2016-05-25 | 中车眉山车辆有限公司 | A kind of lightweight rail wagon base frame |
| CN107766679A (en) * | 2017-11-15 | 2018-03-06 | 厦门理工学院 | A kind of redesign method of the underframe of coach module based on interface digital expression |
| CN107766679B (en) * | 2017-11-15 | 2021-03-02 | 厦门理工学院 | Bus chassis module redesign method based on interface digital expression |
| CN107719472A (en) * | 2017-11-24 | 2018-02-23 | 河南少林客车股份有限公司 | A kind of two-part underframe of coach and the car using the underframe of coach |
| 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 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |