CN201158409Y - Underpan of low-entrance double-layer public transport vehicle - Google Patents
Underpan of low-entrance double-layer public transport vehicle Download PDFInfo
- Publication number
- CN201158409Y CN201158409Y CNU2007201876954U CN200720187695U CN201158409Y CN 201158409 Y CN201158409 Y CN 201158409Y CN U2007201876954 U CNU2007201876954 U CN U2007201876954U CN 200720187695 U CN200720187695 U CN 200720187695U CN 201158409 Y CN201158409 Y CN 201158409Y
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- leaf spring
- suspension
- vehicle frame
- bus
- plate spring
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Abstract
The utility model discloses a low-entrance double-deck bus chassis including a bus frame; front and rear suspensions arranged at the bottom part of the bus frame; front and rear bus bridges are assembled on the front and the rear suspensions; the main bodies of the front and the rear suspensions all adopt plate springs; the front end of the plate spring of the front suspension is mounted on the bus frame through a plate spring pin, the rear end of the plate spring of the front suspension is assembled with and connected with the bus frame though a supporting lug, and the supporting lug is arranged between the rear end of the plate spring of the front suspension and a supporting lug fitting seat in the supporting manner; the front end of the plate spring of the rear suspension is mounted on the bus frame through a plate spring pin, the rear end is assembled with and connected with the bus frame though a rear lifting lug, the rear lifting lug and the fitting seat thereof are arranged above the plate spring of the rear suspension, and the rear bus bridge is arranged above the plate spring of the rear suspension and is assembled on the plate spring of the rear suspension through connection. Aiming at the defect of the greater height of the bus frame from the ground due to the two-stage steps of the prior plate spring double-deck bus chassis, the low-entrance double-deck bus chassis improves the front and the rear suspensions, and achieves the low entrance of the double-deck bus.
Description
Technical field
The utility model relates to the vehicle chassis technology field, especially a kind of leaf spring suspension low entrance double-layer public transport vehicle chassis.
Background technology
At present, the fore suspension and rear suspension part on domestic double deck passenger car chassis adopts double-deck leaf spring, the height space required owing to the leaf spring installation is bigger, cause near the passenger-carrying chassis of propons higher, the plane is liftoff higher on the vehicle frame, therefore the car door of the double deck passenger car of existing employing leaf spring all is a two-stage stepping, does not realize that one-level is marked time to get on the bus.In the city bus market of a part of in addition domestic passenger vehicle and American-European developed country, the application of low inlet bus is quite general, but what great majority adopted all is air spring suspension, air spring suspension and corollary apparatus cost thereof are higher, air suspension (the comprising vehicle bridge) price of the low floor bus special use of import one cover ZF has only the more flourishing city of part economy can bear its high price for being about 150,000 Renminbi at home.
The utility model content
The purpose of this utility model is to provide a kind of forward and backward suspension all to adopt on leaf spring and the vehicle frame plane liftoff lower, the Qianmen little low entrance double-layer public transport vehicle chassis of terrain clearance of marking time.
The technical solution of the utility model is: a kind of low entrance double-layer public transport vehicle chassis, comprise vehicle frame, bottom of frame is provided with forward and backward suspension, be equipped with forward and backward vehicle bridge on the forward and backward suspension, the main body of described forward and backward suspension all adopts leaf spring, the front end of front suspension leaf spring is installed on the vehicle frame by the leaf spring pin, the rear end of front suspension leaf spring is connected with the vehicle frame assembling by support ear, support ear and mount pad thereof all are arranged at the below of leaf spring, and the support ear support assemblies is between front suspension leaf spring rear end and support ear mount pad; The front end of described rear suspension leaf spring by the leaf spring pin be assemblied on the vehicle frame, the rear end assembles by back hanger and vehicle frame and is connected, back hanger and mount pad thereof all are arranged at rear suspension leaf spring top, and back vehicle bridge is arranged at the top of rear suspension leaf spring and by being linked and packed on the rear suspension leaf spring.
When described vehicle frame leading portion is arranged the passenger vehicle driver zone, adopt angle deflector, horizontal direction machine structure, the longitudinal and transverse beam in vehicle frame stage casing adopts the high-intensity special-shaped steel pipe of individual layer, diagonal brace adopts high-intensity special-shaped steel pipe to constitute truss structure, the vehicle frame back segment adopts flute profile longeron bridging arrangement, in the vehicle frame, the back segment transitional region adopts truss structure.
The utility model all is a two-stage stepping at existing leaf spring double-decker chassis, the plane is liftoff higher on the vehicle frame, the deficiency that space availability ratio is relatively poor, adopt the chassis of innovation to arrange, carrying out mechanism on the leaf spring suspension improves: the rear end of the front suspension leaf spring of conventional passenger-carrying chassis all is to adopt the form that just lifts, by hanger mount pad and the hanger lifting leaf spring that is arranged at plane on the vehicle frame, the utility model is for having reduced the car load height of gravitational center, the realization one-level is marked time and is got on the bus, the rear end of the leaf spring of front suspension of the present utility model is adopted to support and is installed, support ear and support ear mount pad all are arranged at the below of leaf spring, the underlying of support ear and support ear mount pad can make the installation site of the leaf spring of front suspension reduce, and does not take the last plane space of vehicle frame, and the height of vehicle frame leading portion is reduced, thereby visitor's door height in the reduction, the realization one-level is marked time and is got on the bus.The back vehicle bridge of conventional passenger-carrying chassis all is mounted in the below of rear suspension leaf spring, because the plane has reduced height on front suspension of the present utility model and the vehicle frame leading portion, the drop on plane is unlikely to too big on the plane and vehicle frame leading portion in order to make on the vehicle frame back segment, back of the present utility model vehicle bridge is installed in the top of the leaf spring of rear suspension, because the height of back axle is the fixed value of determining according to wheel diameter, move the underlying that promptly is equivalent to the rear suspension leaf spring on the back axle installation site, make the structure of rear suspension compact more, thereby the whole height at rear suspension is descended, reduce to make the drop on plane on vehicle frame back segment and the vehicle frame leading portion, strengthened the riding stability and the traveling comfort of city bus.
By above improvement, the utility model has been realized the low inletization of double-layer public transport vehicle, the application of low entry technique, reduced on the vehicle frame plane to floor level, preceding floor pedal terrain clearance is less than 380mm, realized that one-level is marked time to get on the bus, the riding stability and the traveling comfort of city bus have been strengthened, convenient simultaneously by bus, especially convenient for children, old man and getting on and off of action obstacle passenger arranged have strengthened the function of public transport service; The utilization of double deck passenger car has increased the interior space degree of utilization, and the car load seating capacity is increased to 77 by 35 of common 11 meters cars.After the low inletization that has realized bus on the leaf spring suspension, suspension system (comprising vehicle bridge) price is about 5.5 ten thousand Renminbi, cost than air suspension, the low inlet chassis cost of leaf spring suspension can reduce greatly, the level of economic development that adapts to more multinational interior city, enlarge the field of application of leaf spring suspension, improved competitiveness of product.
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 structural representation of preceding leaf spring suspension;
Fig. 4 is the structural representation of back leaf spring suspension.
The specific embodiment
The utility model adopts truss structure and groove beam bridging arrangement Mixed Design aspect body frame structure for automotive, realize maximization of car load low floor region area and floor side member module General design purpose.
As shown in Figure 1 and Figure 2, when the utility model is used to arrange the passenger vehicle driver zone at vehicle frame leading portion 1, adopt angle deflector, horizontal direction machine structure, effectively reduce the driver zone floor level; In preceding visitor door zone, chassis side rail adopts high-intensity special-shaped steel pipe, in conjunction with little inclined-plane, the Qianmen structure of marking time, realizes that the Qianmen marks time terrain clearance less than 380mm, and before longeron end-grain cutting with big oblique angle to satisfy the requirement of car load angle of attach.Vehicle frame adopts little inclined-plane floor panel structure in propons gangway-floor zone 2, satisfying the gap of strengthening floor lower plane and propons H-girder on the car load low floor architecture basics, satisfies the safe jitter space of propons at the car load operational process.The longitudinal and transverse beam in vehicle frame stage casing 3 adopts the high-intensity special-shaped steel pipe of individual layer, and diagonal brace adopts high-intensity special-shaped steel pipe to constitute truss structure, has realized car load low floor region area maximization design goal on the basis that guarantees the vehicle frame bulk strength.Vehicle frame back segment 4 adopts flute profile longeron bridging arrangement, and is identical with the rearmounted car layout of conventional two-stage stepping, reaches the General design purpose.In the vehicle frame, back segment transitional region 5 adopts truss structures, in conjunction with the body platform framework beam, makes the longeron section transitions mild, reduces the car load stress concentration, improves the car load frame strength.
As shown in Figure 3, front suspension structure of the present utility model, the leaf spring 6 of front suspension adopts two groups of three heavily stressed taper-leaf springs, and setting of front axle is at leaf spring 6 middle parts.The front end of leaf spring 6 is installed on the vehicle frame by leaf spring pin 7, and the rear end of leaf spring 6 is connected with the vehicle frame assembling by support ear 10.The rear end of the front suspension leaf spring of conventional passenger-carrying chassis all is to adopt the form that just lifts, by hanger mount pad and the hanger lifting leaf spring that is arranged at plane on the vehicle frame, the utility model is for having reduced the car load height of gravitational center, the realization one-level is marked time and is got on the bus, the rear end of the leaf spring 6 of front suspension of the present utility model is adopted to support and is installed, support ear 10 and support ear mount pad 11 all are arranged at the below of leaf spring 6, support ear 10 by leaf spring pin 8 and hanger pin 9 support and connection between leaf spring 6 rear ends and support ear mount pad 11.The underlying of support ear 10 and support ear mount pad 11 can make the installation site of the leaf spring 6 of front suspension reduce, and does not take the last plane space of vehicle frame, and the height of vehicle frame leading portion 1 is reduced, thereby visitor's door height is gone up in reduction, and the realization one-level is marked time and got on the bus.
As shown in Figure 4, rear suspension structure of the present utility model, the leaf spring 12 of rear suspension adopts two groups of four heavily stressed taper-leaf springs, the front end of the leaf spring 12 of rear suspension is assemblied on the vehicle frame by leaf spring pin 13, the rear end of leaf spring 12 is connected with the vehicle frame assembling by back hanger 16, back hanger 16 adopts the conventional mode of just hanging, and hanger mount pad 17 and back hanger 16 all are arranged at the top of leaf spring 12, and back hanger 16 is connected between leaf spring 6 rear ends and the hanger mount pad 17 by leaf spring pin 15 and hanger pin 17.The back vehicle bridge of conventional passenger-carrying chassis all is mounted in the below of rear suspension leaf spring, because the plane has reduced height on front suspension of the present utility model and the vehicle frame leading portion, the drop on plane is unlikely to too big on the plane and vehicle frame leading portion in order to make on the vehicle frame back segment, back of the present utility model vehicle bridge 14 is installed in the top of the leaf spring 12 of rear suspension, and back vehicle bridge 14 is assemblied in the top, middle part of leaf spring 12 by U-shaped pipe link 18 and connecting panel 19.Because the height of back axle 14 is fixed values of determining according to wheel diameter, back axle moves the underlying that promptly is equivalent to rear suspension leaf spring 12 on 14 installation sites, make the structure of rear suspension compact more, thereby the whole height at rear suspension is descended, reduce to make the drop on plane on vehicle frame back segment and the vehicle frame leading portion, strengthened the riding stability and the traveling comfort of city bus.
Claims (2)
1, a kind of low entrance double-layer public transport vehicle chassis, comprise vehicle frame, bottom of frame is provided with forward and backward suspension, be equipped with forward and backward vehicle bridge on the forward and backward suspension, it is characterized in that: the main body of described forward and backward suspension all adopts leaf spring, and the front end of front suspension leaf spring is installed on the vehicle frame by the leaf spring pin, and the rear end of front suspension leaf spring is connected with the vehicle frame assembling by support ear, support ear and mount pad thereof all are arranged at the below of leaf spring, and the support ear support assemblies is between front suspension leaf spring rear end and support ear mount pad; The front end of described rear suspension leaf spring by the leaf spring pin be assemblied on the vehicle frame, the rear end assembles by back hanger and vehicle frame and is connected, back hanger and mount pad thereof all are arranged at rear suspension leaf spring top, and back vehicle bridge is arranged at the top of rear suspension leaf spring and by being linked and packed on the rear suspension leaf spring.
2, low entrance double-layer public transport vehicle chassis according to claim 1, it is characterized in that: when described vehicle frame leading portion is arranged the passenger vehicle driver zone, adopt angle deflector, horizontal direction machine structure, the longitudinal and transverse beam in vehicle frame stage casing adopts the high-intensity special-shaped steel pipe of individual layer, diagonal brace adopts high-intensity special-shaped steel pipe to constitute truss structure, the vehicle frame back segment adopts flute profile longeron bridging arrangement, in the vehicle frame, the back segment transitional region adopts truss structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201876954U CN201158409Y (en) | 2007-12-28 | 2007-12-28 | Underpan of low-entrance double-layer public transport vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201876954U CN201158409Y (en) | 2007-12-28 | 2007-12-28 | Underpan of low-entrance double-layer public transport vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201158409Y true CN201158409Y (en) | 2008-12-03 |
Family
ID=40109002
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201876954U Expired - Fee Related CN201158409Y (en) | 2007-12-28 | 2007-12-28 | Underpan of low-entrance double-layer public transport vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201158409Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101214784B (en) * | 2007-12-28 | 2010-08-11 | 郑州宇通客车股份有限公司 | Low entrance double-layer public transport vehicle chassis |
-
2007
- 2007-12-28 CN CNU2007201876954U patent/CN201158409Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101214784B (en) * | 2007-12-28 | 2010-08-11 | 郑州宇通客车股份有限公司 | Low entrance double-layer public transport vehicle chassis |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081203 Termination date: 20161228 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |