CN201071075Y - Engine pre-positioning type three-bridge passenger car - Google Patents
Engine pre-positioning type three-bridge passenger car Download PDFInfo
- Publication number
- CN201071075Y CN201071075Y CNU2007201251962U CN200720125196U CN201071075Y CN 201071075 Y CN201071075 Y CN 201071075Y CN U2007201251962 U CNU2007201251962 U CN U2007201251962U CN 200720125196 U CN200720125196 U CN 200720125196U CN 201071075 Y CN201071075 Y CN 201071075Y
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- bridge
- axle
- back axle
- longeron
- frame assembly
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Abstract
An front engine three-axle passenger coach comprises a coach body, a carriage assembly, a front axle and a driving axle, wherein the coach body is arranged above the carriage assembly, the carriage assembly has a framed structure and is composed of a longitudinal beam and a crossbeam, the front part of the carriage assembly is supported by the front axle, the middle and rear part of the carriage assembly are supported by the driving axle, a following axle is arranged at the rear side of the driving axle, and the rear part of the carriage assembly is supported by the following axle. The utility model adopts three-axle (front axle, driving axle and following axle) structure, so as to enlarge the coach body, lengthen the length of the carriage assembly, and effectively improve the passenger-carrying capacity of the public passenger coach. The following axle has simple structure, convenient maintenance and good economic performance, and most of parts can be used with another two axles in common. The elastic vertical suspension properties of the following axle and the optimal configuration of the front and rear axles ensure the longitudinal and transverse stability of the entire passenger coach, and maximally reduce the suspension possibility of the rear part of the passenger coach.
Description
Technical field
The utility model belongs to the passenger vehicle technical field, specifically, relates to a kind of engine behind front wheel formula three bridge passenger vehicles.
Background technology
Along with increasing rapidly of urban population, market is more and more higher to the requirement of vehicular transport efficient, environmental protection and various functions, and maximization, the customizations of bus develop into inexorable law.According to the road conditions that improve day by day China large-and-medium size cities, large-scale bus has obvious social and economic benefit.Improving the passenger capacity and the speed of a motor vehicle is to improve the main path of passenger vehicle conveying efficiency, but, passenger up and down frequent handling characteristics short according to the urban bus average transport distance, satisfying under the standard prerequisite of national urban bus power requirement, improving passenger capacity is the effective scheme that improves conveying efficiency.
Because the width of vehicle body will be subjected to the restriction of road width, the passenger capacity that therefore improves bus must increase the length of vehicle body, and the length of frame assembly is also wanted corresponding increase.If frame assembly still adopts original double-bridge structure, not meeting country on the one hand can not be above the standard of wheelbase 65%, on the other hand about bus rear overhang part, the rear overhang part is long, then the weight of car load mainly concentrates on the rear portion, and the load of propons reduces, and can cause the direction instability.
The engine behind front wheel formula motor omnibus that has adopts increases secondary bridge, add the growth that long wheelbase adapts to frame assembly, to improve the passenger vehicle passenger capacity.But add the steering flexibility that long wheelbase can reduce automobile, as the doube bridge of using for reference the employing of multiaxis lorry form drives, the balance suspension structure, parts such as retarder, air chamber are installed on the back axle central siphon, adjacent bridge connects with the steel plate leaf spring, can rotate around idler axle, other is provided with lower guide rod, its mechanism's complexity, difficult in maintenance, cost is high; And the back axle tire can not lifting, and it is not enough to exist the back axle wear on tyres seriously to wait.
The utility model content
Technical problem to be solved in the utility model is to provide a kind of engine behind front wheel formula three bridge passenger vehicles that can effectively improve passenger capacity.
The technical solution of the utility model is as follows: a kind of engine behind front wheel formula three bridge passenger vehicles, comprise vehicle body, frame assembly, propons and drive axle, wherein vehicle body is positioned at the top of frame assembly, this frame assembly is a framed structure, be made up of longitudinal and cross beam, the front portion of frame assembly is supported by propons, and its key is: the postmedian of described frame assembly is supported by drive axle, rear side at drive axle is installed follow-up bridge, and the rear portion of frame assembly is supported by this follow-up bridge.
Adopt above technical scheme, with vehicle body and frame assembly lengthening, rear side at drive axle is provided with follow-up bridge, the frame assembly front portion is supported by follow-up bridge by drive axle support, rear portion by propons support, postmedian, when reducing bus rear overhang partial-length to greatest extent, making it to meet relevant national standard, effectively improved the passenger capacity of bus like this.
Above-mentioned follow-up bridge comprises back axle central siphon, back axle wheel hub, longitudinally guiding arm, Panhard rod and coil spring assembly, wherein the back axle central siphon is positioned at the below of frame assembly and perpendicular with longeron, the back axle wheel hub is installed at two at the back axle central siphon, and the upper bracket that is fixed on two longeron lateral surfaces connects with the back axle central siphon by coil spring assembly; Be provided with the longitudinally guiding arm in the inboard of longeron, the front end of this longitudinally guiding arm is hinged with the front journal that is fixed on the longeron medial surface, and the bearing on rear end and the back axle central siphon is hinged; Have the Panhard rod of arranging in the same way with it above the back axle central siphon, one of this Panhard rod is hinged on the medial surface of respective side longeron, and the bearing on other end and respective side longeron next door is hinged.
Above-mentioned longitudinally guiding arm and Panhard rod are parallel to the medial surface of longitudinal and cross beam respectively, and their axial line is vertical mutually.
The longitudinally guiding arm can transmit tractive force and braking force and consequent moment longitudinally.When wheel makes follow-up bridge and frame assembly when changing because of load change, two longitudinally guiding arms can swing up and down around its jointed shaft with front journal, to control the characteristics of motion of follow-up bridge.Panhard rod is used for transmitting the transverse force of follow-up bridge suspension, when follow-up bridge and frame assembly variable in distance, Panhard rod can swing up and down around its jointed shaft, to reduce the follow-up bridge cross travel, under space permission, proof strength prerequisite, the lateral stability pole length is got greatly as far as possible, gets little as far as possible with rear axle beam pipe clamp angle.
Above-mentioned coil spring assembly is made of coil spring, undersetting and the axis of guide, and wherein undersetting is fixed on the end face of back axle central siphon, and coil spring is between upper bracket and undersetting, and the three connects by the axis of guide.Coil spring mainly bears vertical load, and when left and right sides coil spring stand under load was uneven, the axis of guide can be beated to inclination and be led, and reduces longitudinally guiding arm and lateral stability torsion of bar; When follow-up bridge was unsettled, the axis of guide also can be shared the load of part longitudinally guiding arm and Panhard rod.
The bottom surface of back axle central siphon is fixed with supporting plate under above-mentioned undersetting, and this supporting plate connects with the lower end of the bumper that is in tilted layout, and the upper end of bumper connects with erection column on the longeron lateral surface.Bumper plays a part to reduce to vibrate, and rises and falls to the influence of vehicle body with ground to reduce wheel.
The utility model is installed the gas circuit load sensing valve on the interior crossbeam of follow-up bridge front upper place, this gas circuit load sensing valve is connected on the brake gas circuit, can adjust the braking force size according to the follow-up bridge load, can reduce wear on tyres when zero load or underloading, cut down the consumption of energy, and improves manoevreability.
The beneficial effects of the utility model are:
1, employing propons, drive axle add three bridge constructions of follow-up bridge, can strengthen the length of vehicle body and frame assembly, have effectively improved the passenger capacity of bus.
2, simple in structure, easy to maintenance, the good economy performance of follow-up bridge, most parts can be general with other two bridge.
3, follow-up bridge hangs vertical elastic behavior and the front and back bridge is distributed rationally, has guaranteed the stability of car load vertical and horizontal, has reduced the unsettled possibility of rear vehicle to greatest extent.
4, the critical component coil spring adopts the finite element method analysis design, simulates fatigue experiment, the reliability height.
5, assembling gas circuit load sensing valve can be adjusted the braking force size according to the follow-up bridge load, can reduce wear on tyres when zero load or underloading, reduce air consumption, improves manoevreability.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the birds-eye view of Fig. 1.
Fig. 3 is the assembling scheme drawing of follow-up bridge and follow-up bridge and frame assembly.
The specific embodiment
The utility model is described in further detail below in conjunction with drawings and Examples:
As Fig. 1, Fig. 2 and shown in Figure 3, the utility model is made of several major parts such as vehicle body 1, frame assembly 2, propons 3, drive axle 4 and driving engines, wherein vehicle body 1 is installed in the top of frame assembly 2, frame assembly 2 is a framed structure, form by two longeron 2a that are parallel to each other and the some crossbeam 2b that are parallel to each other, and longeron 2a is vertical mutually with crossbeam 2b.Propons 3 is positioned at the front portion of frame assembly 2, and connects with frame assembly 2 by a pair of propons leaf spring 19 and a pair of bumper 20, and the front portion of frame assembly 2 is supported by this propons 3.Engine installation and is arranged in the front side (figure does not draw) of propons 3 on frame assembly 2.Drive axle 4 is positioned at the postmedian of frame assembly 2, connects with frame assembly 2 by a pair of drive axle leaf spring 21 and a pair of bumper 13, and the postmedian of frame assembly 2 is supported by this drive axle 4.The connecting relation of described propons 3, drive axle 4 and frame assembly 2 is same as the prior art, does not do at this and gives unnecessary details.Rear side at drive axle 4 is installed follow-up bridge 5, and the rear portion of frame assembly 2 is supported by this follow-up bridge 5.
As can be known from Fig. 3, follow-up bridge 5 is by component set-ups such as back axle central siphon 6, back axle wheel hub 7, longitudinally guiding arm 8, Panhard rod 9, upper bracket 10, coil spring 14, undersetting 15, the axis of guide 16, supporting plate 17 and bumpers 18, wherein back axle central siphon 6 is positioned at the below of frame assembly 2 and perpendicular with longeron 2a, at two of back axle central siphon 6 back axle wheel hub 7 is installed.The lateral surface of two longeron 2a respectively is welded with a upper bracket 10, the end face welding undersetting 15 of the back axle central siphon 6 between back axle wheel hub 7 and respective side longeron 2a, and coil spring 14 is arranged between upper bracket 10 and the undersetting 15, and the three connects by the axis of guide 16.The bottom surface soldering pallet 17 of back axle central siphon 6 under undersetting 15, this supporting plate 17 connects with the lower end of the bumper 18 that is in tilted layout, and the upper end of bumper 18 connects with erection column on the longeron 2a lateral surface, and bumper 18 is parallel to the lateral surface of longeron 2a.
From Fig. 3 further as can be known, respectively be provided with a longitudinally guiding arm 8 in the inboard of two longeron 2a, this longitudinally guiding arm 8 is parallel with the medial surface of longeron 2a, and the front end of longitudinally guiding arm 8 is hinged with the front journal 12 that is fixed on longeron 2a medial surface, and the bearing 11 on rear end and the back axle central siphon 6 is hinged.Have the Panhard rod of arranging in the same way with it 9 above back axle central siphon 6 stage casings, this Panhard rod 9 is parallel to the medial surface of crossbeam 2b, and the axial line of Panhard rod 9 is vertical mutually with the axial line of longitudinally guiding arm 8.One of Panhard rod 9 is hinged on the medial surface of the longeron 2a of homonymy with it, and the bearing 11 on other end and respective side longeron 2a next door is hinged.
Claims (5)
1. engine behind front wheel formula three bridge passenger vehicles, comprise vehicle body (1), frame assembly (2), propons (3) and drive axle (4), wherein vehicle body (1) is positioned at the top of frame assembly (2), this frame assembly (2) is a framed structure, form by longeron (2a) and crossbeam (2b), the front portion of frame assembly (2) is supported by propons (3), it is characterized in that: the postmedian of described frame assembly (2) is supported by drive axle (4), rear side at drive axle (4) is installed follow-up bridge (5), and the rear portion of frame assembly (2) is supported by this follow-up bridge (5).
2. engine behind front wheel formula three bridge passenger vehicles according to claim 1, it is characterized in that: described follow-up bridge (5) comprises back axle central siphon (6), back axle wheel hub (7), longitudinally guiding arm (8), Panhard rod (9) and coil spring assembly, wherein back axle central siphon (6) is positioned at the below of frame assembly (2) and perpendicular with longeron (2a), back axle wheel hub (7) is installed at two at back axle central siphon (6), and the upper bracket (10) that is fixed on two longerons (2a) lateral surface connects with back axle central siphon (6) by coil spring assembly; Be provided with longitudinally guiding arm (8) in the inboard of longeron (2a), the front end of this longitudinally guiding arm (8) is hinged with the front journal (12) that is fixed on longeron (2a) medial surface, and the bearing (11) on rear end and the back axle central siphon (6) is hinged; Have the Panhard rod of arranging in the same way with it (9) in the top of back axle central siphon (6), (9) one of this Panhard rods are hinged on the medial surface of respective side longeron (2a), and the bearing (11) on other end and respective side longeron (2a) next door is hinged.
3. engine behind front wheel formula three bridge passenger vehicles according to claim 2 is characterized in that: described longitudinally guiding arm (8) and Panhard rod (9) are parallel to the medial surface of longeron (2a) and crossbeam (2b) respectively, and their axial line is vertical mutually.
4. engine behind front wheel formula three bridge passenger vehicles according to claim 2, it is characterized in that: described coil spring assembly is made of coil spring (14), undersetting (15) and the axis of guide (16), wherein undersetting (15) is fixed on the end face of back axle central siphon (6), coil spring (14) is positioned between upper bracket (10) and the undersetting (15), and the three connects by the axis of guide (16).
5. engine behind front wheel formula three bridge passenger vehicles according to claim 4, it is characterized in that: the bottom surface of back axle central siphon (6) is fixed with supporting plate (17) under described undersetting (15), this supporting plate (17) connects with the lower end of the bumper that is in tilted layout (18), and the upper end of bumper (18) connects with erection column on longeron (2a) lateral surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201251962U CN201071075Y (en) | 2007-09-11 | 2007-09-11 | Engine pre-positioning type three-bridge passenger car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201251962U CN201071075Y (en) | 2007-09-11 | 2007-09-11 | Engine pre-positioning type three-bridge passenger car |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201071075Y true CN201071075Y (en) | 2008-06-11 |
Family
ID=39549635
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201251962U Expired - Lifetime CN201071075Y (en) | 2007-09-11 | 2007-09-11 | Engine pre-positioning type three-bridge passenger car |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201071075Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN102107597A (en) * | 2011-02-17 | 2011-06-29 | 重庆恒通客车有限公司 | Engine preposed type double rear axle carriage chassis |
| CN105799489A (en) * | 2014-12-31 | 2016-07-27 | 长春孔辉汽车科技股份有限公司 | Multi-shaft hybrid power vehicle |
-
2007
- 2007-09-11 CN CNU2007201251962U patent/CN201071075Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN102107597A (en) * | 2011-02-17 | 2011-06-29 | 重庆恒通客车有限公司 | Engine preposed type double rear axle carriage chassis |
| CN105799489A (en) * | 2014-12-31 | 2016-07-27 | 长春孔辉汽车科技股份有限公司 | Multi-shaft hybrid power vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080611 |