Special chassis for hybrid drive airport fire fighting truck

Abstract

The utility model relates to a special chassis for a hybrid drive airport fire fighting truck, which solves the problems of the special chassis for the existing airport fire fighting truck. The engine and the gearbox are arranged at the tail part of the frame; the cooling system is arranged behind the engine; the air inlet system and the exhaust system are arranged on the left and right sides above the engine; the fuel system is arranged outside the right frame of the chassis; the reversing device is arranged in the middle of the frame and in front of the transmission; the electrical system storage battery is arranged at the front part of the vehicle; the suspension systems are arranged on the two sides of the frame according to the axle distance requirement. The steering system is arranged close to the lower part of the outer side of the frame; the braking system is arranged on the left side of the chassis and outside the frame; the electric drive axle is arranged in the middle of the one-axle suspension system and on the inner side of the frame; the rear axle is arranged in the middle of the middle-rear axle suspension system and on the inner side of the frame; and the wheels are uniformly distributed on the electric drive axle and the rear axle. According to the utility model, the hybrid driving mode of mechanical driving of the rear wheel engine and driving of the front wheel motor improves the acceleration capability of the fire fighting truck and improves the economic performance maneuverability.

Description

Technical Field

[0001] The utility model relates to a fire truck chassis, in particular to a special chassis for a hybrid drive airport fire truck. Background Art

[0002] The existing airport fire truck chassis are all equipped with high-power diesel engines, hydraulic automatic transmissions and reversing transfer cases with all-wheel drive mechanical transmissions, such as Figure 1 shown.

[0003] This specialized chassis for airport fire trucks uses a single power source or hybrid centralized drive. Currently, the main issues are: the powertrain cannot provide sufficient power to meet the acceleration requirements of airport fire trucks; and the hybrid centralized drive requires batteries that are heavy and pose safety concerns. Utility Model Content

[0004] The purpose of this utility model is to provide a new chassis power drive method. On the existing drive chassis, the all-wheel drive transfer case is eliminated and a hybrid drive method is adopted in which the power system directly drives the rear wheels and the front axle is driven by an electric motor to provide power to the chassis. Under normal operating conditions, the powertrain directly drives the rear wheels. Under special operating conditions requiring high acceleration, the front wheels are driven by an electric motor to achieve improved acceleration performance. Under normal operating conditions, only the rear wheels are directly driven. This solves the bottleneck of improving acceleration performance by matching a high-power powertrain, and can also save power consumption to a certain extent, achieving the purpose of improving economy. This solution is characterized by high maneuverability and good economy.

[0005] The utility model is realized by the following technical solutions:

[0006] A special chassis for a hybrid drive airport fire truck includes an engine 1, a gearbox 2, a reversing device 3, a fuel system 4, an air intake system 5, an exhaust system 6, a cooling system 7, an electrical system 8, a suspension system 9, a steering system 10, a braking system 11, an electric drive axle 12, a rear axle 13, wheels 14, and a frame system 15.

[0007] The engine 1 and the transmission 2 are arranged at the rear of the frame 15, and the cooling system 7 is arranged behind the engine 1; the intake system 5 and the exhaust system 6 are arranged on the left and right sides above the engine 1; the fuel system 4 is arranged on the outside of the frame 15 on the right side of the chassis; the reversing device 3 is arranged in the middle of the frame 15, in front of the transmission 2; the battery of the electrical system 8 is arranged at the front of the vehicle; the suspension system 9 is arranged on both sides of the frame 15 according to the wheelbase requirements; the steering system 10 is arranged close to the outside of the frame 15 and lower; the braking system 11 is arranged on the left side of the chassis and on the outside of the frame 15; the electric drive axle 12 is arranged in the middle of the single-bridge suspension system 9 and on the inside of the frame 15; the rear axle 13 is arranged in the middle of the center-rear axle suspension system 9 and on the inside of the frame 15; the wheels 14 are evenly distributed on the electric drive axle 12 and the rear axle 13.

[0008] The layout of the special chassis of the utility model overturns the traditional layout of previous fire trucks. It adopts a hybrid drive mode of rear wheel engine mechanical drive and front wheel electric motor drive, which improves the acceleration ability of the fire truck and improves economic performance and maneuverability. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 This is a schematic diagram of the existing dedicated chassis for airport fire trucks;

[0010] Figure 2 It is a schematic diagram of the present utility model. DETAILED DESCRIPTION

[0011] like Figure 2 As shown, the general layout of the present invention consists of an engine 1, a gearbox 2, a reversing device 3, a fuel system 4, an intake system 5, an exhaust system 6, a cooling system 7, an electrical system 8, a suspension system 9, a steering system 10, a braking system 11, an electric drive axle 12, a rear axle 13, wheels 14, a frame system 15, etc.

[0012] The engine 1 and the transmission 2 are arranged at the rear of the frame 15, and the cooling system 7 is arranged behind the engine 1; the intake system 5 and the exhaust system 6 are arranged on the left and right sides above the engine 1; the fuel system 4 is arranged on the outside of the frame 15 on the right side of the chassis; the reversing device 3 is arranged in the middle of the frame 15, in front of the transmission 2; the battery of the electrical system 8 is arranged at the front of the vehicle; the suspension system 9 is arranged on both sides of the frame 15 according to the wheelbase requirements; the steering system 10 is arranged close to the outside of the frame 15 and lower; the braking system 11 is arranged on the left side of the chassis and on the outside of the frame 15; the electric drive axle 12 is arranged in the middle of the single-bridge suspension system 9 and on the inside of the frame 15; the rear axle 13 is arranged in the middle of the center-rear axle suspension system 9 and on the inside of the frame 15; the wheels 14 are evenly distributed on the electric drive axle 12 and the rear axle 13.

[0013] The utility model has the following advantages:

[0014] 1. The front axle is electrically driven, reducing the use of transfer cases under all-wheel drive conditions.

[0015] 2. The addition of motor drive increases the vehicle's power input and solves the problem of insufficient power.

Claims

1. A hybrid drive chassis for airport fire trucks, characterized by: It includes engine, gearbox, reversing device, fuel system, air intake system, exhaust system, cooling system, electrical system, suspension system, steering system, braking system, electric drive axle, rear axle, wheels and frame system; the engine and gearbox are arranged at the rear of the frame, and the cooling system is arranged behind the engine; the air intake system and exhaust system are arranged on the left and right sides above the engine; the fuel system is arranged on the outside of the frame on the right side of the chassis; the reversing device is arranged in the middle of the frame, before the transmission; the battery of the electrical system is arranged at the front of the vehicle; the suspension system is arranged on both sides of the frame according to the wheelbase requirements; the steering system is arranged close to the outside of the frame and lower; the braking system is arranged on the left side of the chassis and on the outside of the frame; the electric drive axle is arranged in the middle of the first axle suspension system and on the inside of the frame; the rear axle is arranged in the middle of the center-rear axle suspension system and on the inside of the frame; the wheels are evenly distributed on the electric drive axle and the rear axle.

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