Novel short rear overhang wheel edge driving low-entrance urban bus chassis

Abstract

The utility model discloses a novel short-rear-overhang wheel-side-driven low-entrance urban bus chassis, which belongs to the technical field of urban bus chassis, aims at solving the problems that people are difficult to get on and off a bus in a disabled area and riding experience is affected, and comprises a frame assembly and a front axle assembly arranged on one side of the frame assembly. A rear axle assembly is arranged on one side of the frame assembly, front tire assemblies are installed at the two ends of each front axle assembly, rear tire assemblies are installed at the two ends of each rear axle assembly, front suspension assemblies matched with the front axle assemblies are arranged on the sides, close to each other, of the two front tire assemblies, and a brake assembly used in a matched mode is arranged on one side of the frame assembly. According to the utility model, by adopting the short suspension, the riding comfort and convenience of the vehicle are improved, the problem of insufficient passenger capacity of 8-meter small and medium-sized buses in rush hours is solved, the use requirements of customers for reducing small and medium-sized buses can be met, and the running energy consumption, the occupied area, the maintenance cost and the like are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of city bus chassis, in particular to a novel short rear suspension wheel side driven low entry city bus chassis. Background Art

[0002] Nowadays, pure electric city buses are very popular in various cities. It is easy to see city buses speeding by on the road. However, with the emergence of various public transportation tools such as subways, light rails, online taxis, shared bicycles, electric bicycles, etc., city buses have a low occupancy rate except during peak hours. Therefore, in order to save vehicle costs and reduce energy consumption, 8-meter-level small and medium-sized city buses have become the most popular city buses among customers. Traditional 8-meter buses basically have two-level steps, which are very inconvenient for wheelchair passengers, the elderly, and children. Therefore, we are considering designing an 8-meter-level low-entry vehicle. At the same time, due to the short length of the 8-meter-level vehicle and the addition of a disabled area, the vehicle has a small passenger capacity. In order to cope with the situation of more passengers during peak hours, it is necessary to increase the passenger area space as much as possible to increase the passenger capacity. In order to solve the above pain points, this 8-meter-class short rear overhang wheel-side drive low-entry city bus came into being. It not only has the characteristics of low entry and disabled area, but also solves the problem of small passenger capacity. As a city's main means of transportation, city buses undertake the main transportation services of a city. With the advancement of science and technology, national policies require urbanization, and the population of large cities is becoming more and more dense. There are more and more types of public transportation, including subways, light rails, online taxis, shared bicycles, electric bicycles and other public transportation. These public transportations have diverted the source of urban buses. The continuous decline in urban bus passenger volume and sharp decline in revenue have caused many bus companies to "lose money" and even fall into the dilemma of suspension of operation, which is full of challenges for the future development of city buses.

[0003] There are more and more types of public transportation, such as subways, light rails, online taxis, shared bicycles, and electric bicycles. As the main form of urban passenger transportation, buses are required to be smaller and larger in capacity. However, the two are inherently conflicting issues. The smaller the size of the vehicles, the smaller the standing area of ​​the vehicles, which will inevitably lead to a decrease in passenger capacity.

[0004] Combining the above with customer demand research, vehicles longer than 9 meters are no longer the main demand direction for many urban bus customers. Currently, 8-meter vehicles are generally recognized as a more appropriate bus length.

[0005] The common 8-meter models in the market are of two types: two-step models, which have no disabled area, wheelchairs cannot get on and off the vehicle, and the passenger area is small, which affects the passenger experience and the city image; the other type is an 8-meter first-step model, which has a disabled area, but the passenger area is too small and the passenger capacity is limited. Therefore, the market needs to develop a model with a first-step, a disabled area, and a larger passenger capacity. Utility Model Content

[0006] The utility model aims to solve one of the technical problems existing in the prior art or related technology.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a large-scale dairy farming wastewater treatment device, comprising a frame assembly and a front axle assembly, the front axle assembly being arranged on one side of the frame assembly, a rear axle assembly being arranged on one side of the frame assembly, front tire assemblies being installed at both ends of the front axle assembly, rear tire assemblies being installed at both ends of the rear axle assembly, a front suspension assembly being adapted to the front axle assembly being arranged on one side where the two front tire assemblies are close to each other, a matching brake assembly being arranged on one side of the frame assembly, an air supply assembly being arranged on one side of the rear axle assembly, a cooling assembly being arranged on one side of the rear axle assembly, and a steering assembly being arranged on one side of the frame assembly, and the steering assembly being adapted to the front tire assembly.

[0008] Preferably, the rear axle assembly includes a rear suspension assembly and two wheel-side motors, the two wheel-side motors are arranged on one side of the rear axle assembly, and one end of the output shaft of the two wheel-side motors is provided with a matching rear tire assembly.

[0009] Preferably, the air supply assembly comprises an electric air compressor, a muffler is installed on one side of the electric air compressor, a dryer is installed on the top side of the electric air compressor, and a condenser is installed on one side of the dryer.

[0010] Preferably, the cooling component includes a heat dissipation assembly and an expansion water tank, and the heat dissipation assembly is connected to the expansion water tank through a pipeline.

[0011] Preferably, the length of the rear suspension assembly is smaller than the length of the front suspension assembly, and the length of the rear suspension assembly is 1045 mm.

[0012] Preferably, the air supply assembly is located between the center line of the rear axle of the frame assembly and the rear door frame of the middle door, the brake assembly is located between the center line of the rear axle of the frame assembly and the rear door frame of the middle door, and the distance between the center line of the rear axle of the frame assembly and the rear door frame of the middle door is 990 mm.

[0013] By adopting the above technical solution, the beneficial effects achieved by the utility model are as follows:

[0014] 1. In the utility model, the space occupied by the tire can be removed by setting the length of the rear suspension assembly, so that the space occupied by the rear tire assembly is very small. The air supply component, the steering component, and the cooling component are installed in a limited and narrow space, so that the compactness of the chassis is improved as a whole, and the aesthetics is also significantly improved. In addition, compared with the traditional long rear overhang structure, the short rear overhang structure can reduce the center of gravity height under the condition of the same load-bearing capacity, thereby improving the stability of the whole vehicle. In addition, by shortening the rear overhang length, the structural strength requirement is significantly reduced, and the waste of resources caused by the excessively long suspension is reduced.

[0015] 2. The utility model improves the ride comfort and convenience of the vehicle by adopting a short suspension, solves the problem of insufficient passenger capacity of 8-meter-class small and medium-sized buses during rush hour, not only meets the customer's demand for reducing the use of small and medium-sized buses, but also reduces driving energy consumption, floor space, maintenance costs, etc., and realizes the adaptation function of small size, large space and high passenger capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a side structural schematic diagram of an embodiment of the utility model;

[0017] Figure 2 This is a schematic diagram of the main structure of an embodiment of the utility model;

[0018] Figure 3 This is a structural schematic diagram of a rear axle assembly according to an embodiment of the utility model;

[0019] Figure 4 This is a schematic diagram of the structure of an air supply component according to an embodiment of the utility model;

[0020] Figure 5 This is a schematic structural diagram of a cooling component according to an embodiment of the utility model.

[0021] Reference numerals:

[0022] 1. Frame assembly; 2. Front axle assembly; 3. Rear axle assembly; 301. Rear suspension assembly; 302. Wheel-side motor; 4. Front tire assembly; 5. Rear tire assembly; 6. Front suspension assembly; 7. Brake assembly; 8. Air supply assembly; 801. Electric air compressor; 802. Muffler; 803. Dryer; 804. Condenser; 9. Cooling assembly; 901. Expansion water tank; 902. Heat dissipation assembly; 10. Steering assembly. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in combination with specific implementation methods and with reference to the accompanying drawings. It should be noted that the embodiments of the utility model and the features in the embodiments can be combined with each other without conflict.

[0024] It should be understood that these descriptions are exemplary only and are not intended to limit the scope of the present invention.

[0025] A novel short rear suspension wheel side drive low entry city bus chassis provided by some embodiments of the utility model will be described below in conjunction with the accompanying drawings.

[0026] 1. This new short rear suspension wheel side drive low entry city bus chassis is specially developed for 8-meter bus. Its technical parameters are as follows:

[0027]

[0028]

[0029] Combination Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the utility model provides a novel short rear suspension wheel side drive low entry city bus chassis, including a frame assembly 1, and also includes a front axle assembly 2, the front axle assembly 2 is arranged on one side of the frame assembly 1, a rear axle assembly 3 is arranged on one side of the frame assembly 1, front tire assemblies 4 are installed at both ends of the front axle assembly 2, rear tire assemblies 5 are installed at both ends of the rear axle assembly 3, a front suspension assembly 6 adapted to the front axle assembly 2 is arranged on the side where the two front tire assemblies 4 are close to each other, a matching brake assembly 7 is arranged on one side of the frame assembly 1, an air supply assembly 8 is arranged on one side of the rear axle assembly 3, a cooling assembly 9 is arranged on one side of the rear axle assembly 3, and a steering assembly is arranged on one side of the frame assembly 1. Part 10, the steering component 10 is compatible with the front tire assembly 4. By lowering the height of the vehicle body and setting a low entrance and a first-level step, wheelchairs for disabled people can enter the vehicle without obstacles, greatly improving the comfort and convenience of public transportation. The wheelbase reaches 5350mm, which reaches the wheelbase of a normal 10-meter vehicle. The passenger standing area is located on the first-level step floor plane, with a total area of ​​7㎡. The conventional long-wheelbase 8-meter low-entrance bus has a wheelbase of 4100mm and a first-level step floor plane standing area of ​​5㎡. Compared with the conventional 8-meter low-entrance long rear overhang structure, the 8-meter low-entrance short rear overhang long wheelbase structure has an additional 2㎡ of first-level step floor plane, which effectively improves the passenger carrying capacity.

[0030] Further as Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, it is worth specifically explaining that the rear axle assembly 3 includes a rear suspension assembly 301 and two wheel-side motors 302. The two wheel-side motors 302 are arranged on one side of the rear axle assembly 3. One end of the output shaft of the two wheel-side motors 302 is provided with a matching rear tire assembly 5. By adopting the setting of the wheel-side motor 302 drive, compared with the traditional central drive, the distributed wheel-side electric drive solution adopted in this solution has more advantages in energy consumption, and the wheel-side motor 302 has high efficiency, and the motor efficiency MAP reaches the double 90 standard, and the high efficiency can cover more industries. It can save energy consumption of the whole vehicle. Compared with the traditional direct-drive components, it eliminates the rigid bridge and transmission shaft and innovatively uses parallel helical gear reduction direct drive main reduction to bevel gear, which increases the transmission efficiency by about 5%, greatly reduces the loss of transmission efficiency, and the feedback torque is twice as large as that of the traditional bridge, which can recover more energy. The 8-meter drive component has a weight reduction of more than 700kg and can adjust the program according to the vehicle load condition. Under low-load conditions, the motor has been working in the high-efficiency area to reduce energy consumption. It has the advantages of high motor efficiency, high transmission efficiency, large feedback torque, lightweight vehicle and good adaptability to working conditions.

[0031] Further as Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, it is worth explaining in detail that the cooling component 9 includes a heat dissipation assembly 902 and an expansion water tank 901, and the heat dissipation assembly 902 is connected to the expansion water tank 901 through a pipeline.

[0032] Further as Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, it is worth explaining in detail that the air supply component 8 includes an electric air compressor 801, a muffler 802 is installed on one side of the electric air compressor 801, a dryer 803 is installed on the top side of the electric air compressor 801, and a condenser 804 is installed on one side of the dryer 803.

[0033] Further as Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, it is worth specifically stating that the length of the rear suspension assembly 301 is less than the length of the front suspension assembly 6, and the length of the rear suspension assembly 301 is 1045 mm. By setting the length of the rear suspension assembly 301, the space occupied by the tire can be removed, so that the space occupied by the rear tire assembly 5 is very small. The air supply component 8, the steering component 10, and the cooling component 9 are installed in a limited and narrow space, so that the compactness of the chassis is improved as a whole, and the aesthetics is also significantly improved. Compared with the traditional long rear suspension structure, the short rear suspension structure can reduce the center of gravity height under the condition of the same load-bearing capacity, thereby improving the stability of the vehicle. In addition, by shortening the rear suspension length, the structural strength requirement is significantly reduced, reducing the waste of resources caused by the excessive length of the suspension.

[0034] Further as Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, it is worth explaining in detail that the air supply component 8 is located between the center line of the rear axle of the frame assembly 1 and the middle door rear door frame, the brake component 7 is located between the center line of the rear axle of the frame assembly 1 and the middle door rear door frame, and the distance between the center line of the rear axle of the frame assembly 1 and the middle door rear door frame is 990 mm. By arranging the air supply component 8 and the brake component 7 in the space of 990 mm from the center line of the rear axle of the frame assembly 1 to the middle door rear door frame, the space utilization is rationalized, and the chassis space is fully utilized, making the structure more compact and beautiful.

[0035] In the present invention, the term "plurality" means two or more than two, unless otherwise clearly defined. The term "and / or" used herein includes any and all combinations of one or more related listed items. The terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "connect" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0036] It should be noted that when an element is referred to as being "assembled on", "installed on", "fixed on" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0037] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0038] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A novel short rear suspension wheel side drive low entry city bus chassis, comprising a frame assembly (1), characterized in that: Also includes A front axle assembly (2), the front axle assembly (2) being arranged on one side of the frame assembly (1), a rear axle assembly (3) being arranged on one side of the frame assembly (1), front tire assemblies (4) being installed at both ends of the front axle assembly (2), rear tire assemblies (5) being installed at both ends of the rear axle assembly (3), a front suspension assembly (6) being adapted to the front axle assembly (2) being arranged on one side of the two front tire assemblies (4) being close to each other, a matching brake assembly (7) being arranged on one side of the frame assembly (1), an air supply assembly (8) being arranged on one side of the rear axle assembly (3), a cooling assembly (9) being arranged on one side of the rear axle assembly (3), and a steering assembly (10) being arranged on one side of the frame assembly (1), the steering assembly (10) being adapted to the front tire assembly (4).

2. The novel short rear suspension wheel side drive low entry city bus chassis according to claim 1 is characterized in that: The rear axle assembly (3) comprises a rear suspension assembly (301) and two wheel-side motors (302), wherein the two wheel-side motors (302) are arranged on one side of the rear axle assembly (3), and a matching rear tire assembly (5) is arranged at one end of the output shaft of the two wheel-side motors (302).

3. The novel short rear suspension wheel side drive low entry city bus chassis according to claim 2 is characterized in that: The air supply assembly (8) comprises an electric air compressor (801), a muffler (802) is installed on one side of the electric air compressor (801), a dryer (803) is installed on the top side of the electric air compressor (801), and a condenser (804) is installed on one side of the dryer (803).

4. The novel short rear suspension wheel side drive low entry city bus chassis according to claim 3 is characterized in that: The cooling component (9) comprises a heat dissipation assembly (902) and an expansion water tank (901), and the heat dissipation assembly (902) is connected to the expansion water tank (901) via a pipeline.

5. The novel short rear suspension wheel side drive low entry city bus chassis according to claim 4 is characterized in that: The length of the rear suspension assembly (301) is smaller than the length of the front suspension assembly (6), and the length of the rear suspension assembly (301) is 1045 mm.

6. The novel short rear suspension wheel side drive low entry city bus chassis according to claim 5 is characterized in that: The air supply assembly (8) is located between the center line of the rear axle of the frame assembly (1) and the middle door rear door frame, and the brake assembly (7) is located between the center line of the rear axle of the frame assembly (1) and the middle door rear door frame. The distance between the center line of the rear axle of the frame assembly (1) and the middle door rear door frame is 990 mm.

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