CN110154733B

CN110154733B - Hybrid engineering vehicle

Info

Publication number: CN110154733B
Application number: CN201910532155.2A
Authority: CN
Inventors: 彭金平; 胡永柱; 罗云; 牛俊; 胡珊; 龚明佳; 刘奇峰; 唐国平
Original assignee: Anhui Hualing Automobile Co Ltd
Current assignee: Anhui Hualing Automobile Co Ltd
Priority date: 2019-06-19
Filing date: 2019-06-19
Publication date: 2024-03-01
Anticipated expiration: 2039-06-19
Also published as: CN110154733A

Abstract

The invention discloses a hybrid engineering vehicle, wherein an engine and a gearbox are arranged between two longitudinal beams, and the engine outputs power through the gearbox to enable wheels to operate; the outer side of one longitudinal beam is fixedly provided with a post-treatment assembly, a urea kettle assembly, a two-stage oil-water separator assembly, a piezoelectric bottle frame assembly and a fuel tank assembly; the driving motor is arranged in line with the engine and the gearbox, and outputs power through the gearbox to enable wheels to run; the outer side of the other longitudinal beam is fixedly provided with a power battery assembly; the engineering upper part is arranged at the rear part of the frame assembly; the invention can respectively output power by the driving motor or the engine, and can switch different driving modes according to different driving states of the vehicle, thereby reducing fuel consumption in the starting and low-speed driving processes and achieving the effects of energy conservation and emission reduction; the components matched with the engine and the components matched with the driving motor are respectively arranged on two sides of the longitudinal beam, are uniformly distributed and do not interfere with each other.

Description

Hybrid engineering vehicle

Technical Field

The invention relates to the technical field of vehicle engineering, in particular to a hybrid engineering vehicle.

Background

Under the double pressure of energy supply shortage and serious environmental pollution, the national exhaust emission standard of commercial vehicles is more and more strict; the concrete mixing transport vehicle is generally used for transporting concrete in a point-to-point medium-short distance, and often needs to travel in a city, and because the road condition of the city is complex, the traveling process needs to be continuously braked, decelerated and accelerated; the traditional engineering vehicle is driven by a diesel engine, the diesel engine has the greatest oil consumption at the starting stage, the diesel engine has the defects of poor dynamic property, slow starting and high oil consumption when being used as power, meanwhile, the braking distance is long when the concrete mixing transport vehicle is in heavy load, the urban road condition is braked frequently, the kinetic energy is converted into heat energy to be dissipated when the urban road condition is braked, and the energy loss is serious.

The concrete mixing transport vehicle is limited by the axle distance of the chassis, the mixing upper assembly and the length of the whole vehicle, and the arrangement space of each system of the chassis and the whole vehicle is very limited; how to reduce the exhaust emission of a concrete mixer truck is a technical problem that needs to be solved at present for those skilled in the art.

Disclosure of Invention

The invention provides a hybrid engineering vehicle, which achieves the effects of energy conservation and emission reduction through the mutual coordination of an engine and a driving motor; the components are uniformly distributed and do not interfere with each other, and the specific scheme is as follows:

a hybrid engineering vehicle comprising:

the frame assembly comprises a longitudinal beam and a transverse beam which are mutually fixedly connected to form a frame;

the engine and the gearbox are arranged between the two longitudinal beams; the engine outputs power through the gearbox; one of the longitudinal beams is fixedly arranged on the outer side between the first bridge and the second bridge, and a urea kettle assembly, a two-stage oil-water separator assembly, a piezoelectric bottle frame assembly and a fuel tank assembly are fixedly arranged on the outer side between the second bridge and the middle bridge;

the chassis driving motor is arranged in line with the engine and the gearbox, and outputs power through the gearbox; the outer side of the other longitudinal beam is fixedly provided with a power battery assembly;

engineering upper mounting, which is mounted at the rear part of the frame assembly;

and the cab is arranged at the front part of the frame assembly.

Optionally, the integrated frame is arranged between the engineering upper garment and the cab;

the integrated frame is transversely divided into three independent spaces, a controller is arranged in a second inner cavity of the middle part, a high-voltage distribution box and a high-voltage wire fixing plate are arranged in a first inner cavity on one side, and an electronic fan radiating assembly is arranged in a third inner cavity on the other side.

Optionally, a mechanical power-assisted steering oil pump is installed on the engine, and an electric power-assisted steering oil pump is installed in the first inner cavity of the integrated frame;

the steering oilcan and the steering gear are arranged on the frame assembly, and the mechanical power-assisted steering oil pump and the electric power-assisted steering oil pump can respectively and independently control the steering gear.

Optionally, a mechanical air conditioner compressor is installed on the engine, and an electric air conditioner compressor is installed on the frame assembly.

Optionally, the engineering upper package is a stirring tank, the frame assembly is provided with an upper package driving motor, and the upper package driving motor drives the engineering upper package to rotate.

Optionally, the second inner cavity of the integrated frame is vertically divided into three layers, and an upper driving motor controller and an all-in-one controller are arranged on the lower layer; the middle layer is provided with a whole vehicle controller and a chassis driving motor controller; the upper layer is provided with a battery cooling unit.

Optionally, an MSD switch is disposed on an outer side wall of the first inner cavity of the integrated frame, and a charging port is disposed on an outer side wall of the third inner cavity of the integrated frame;

and a battery cooling water supplementing kettle and a driving motor cooling water supplementing kettle are arranged at the top of the integrated frame.

Optionally, the longitudinal beams forming the frame assembly are arranged in a single layer, and the front width of each longitudinal beam is larger than the rear width; the engine, the chassis driving motor and the gearbox are arranged at the front part of the longitudinal beam;

a reinforcing plate is arranged at the joint of the cross beam and the longitudinal beam; and reinforcing plates are arranged at the positions where the distance between the two longitudinal beams changes.

Optionally, the power battery assembly includes a battery fixing bracket and a battery pack, the battery fixing bracket being laminated and detachably fixed;

the battery fixing bracket also comprises a skin surrounding the battery fixing bracket; and two fuse boxes are fixedly arranged outside the skin.

Optionally, an air receiver and dryer assembly is arranged between the two longitudinal beams of the frame assembly.

Optionally, an inter-cooling engine radiator and an engine electromagnetic fan are arranged in front of the engine;

and an air filtering assembly and an air inlet channel assembly are arranged above the outer side of the longitudinal beam.

The invention provides a hybrid engineering vehicle, wherein a frame assembly comprises a longitudinal beam and a transverse beam which are mutually fixedly connected to form a frame, so as to play a supporting role; the engine and the gearbox are arranged between the two longitudinal beams, and the engine outputs power through the gearbox to enable wheels to operate; the outer side of one longitudinal beam is fixedly provided with a post-treatment assembly, a urea kettle assembly, a two-stage oil-water separator assembly, a low-voltage electric bottle frame assembly and a fuel tank assembly, and the above components are matched with an engine to work, wherein the post-treatment assembly is positioned between a first bridge and a second bridge, and the urea kettle assembly, the two-stage oil-water separator assembly, the low-voltage electric bottle frame assembly and the fuel tank assembly are positioned between the second bridge and a middle bridge; the driving motor is arranged in line with the engine and the gearbox, and outputs power through the gearbox to enable wheels to run; the outer side of the other longitudinal beam is fixedly provided with a power battery assembly which is matched with the driving motor for working; the engineering upper part is arranged at the rear part of the frame assembly, the cab is arranged at the front part of the frame assembly, and the frame assembly provides support; the hybrid engineering vehicle can respectively output power by the driving motor or the engine, and the driving motor or the engine is used according to different working conditions, so that the effects of energy conservation and emission reduction are achieved; the components matched with the engine and the components matched with the driving motor are respectively arranged on two sides of the longitudinal beam, and the components are uniformly distributed and do not interfere with each other.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1A and fig. 1B are respectively structural diagrams of two different sides of a hybrid engineering vehicle provided by the invention;

FIG. 2A is a top view of the block diagram of FIG. 1;

FIG. 2B is a top view of the front portion of the frame assembly;

FIG. 2C is a side view of the front portion of the frame assembly;

FIG. 3A is a front view of an integrated frame;

fig. 3B to 3D are left, right and top views, respectively, of the integrated frame;

fig. 4A and fig. 4B are overall block diagrams of a hybrid engineering vehicle including an engineering upper garment, respectively;

FIGS. 5A and 5B are top and side views, respectively, of a frame assembly;

fig. 6A-6C are front, top and side views, respectively, of a power cell assembly;

fig. 7 is a graph of the operating modes corresponding to different phases of the driving cycle.

The drawings include:

the vehicle frame assembly 1, the longitudinal beam 11, the cross beam 12, the electric air conditioning compressor 13, the steering oilcan 14, the steering gear 15, the air receiver 16, the dryer assembly 17, the transmission shaft 18, the air conditioning condenser 19, the engine 2, the gearbox 21, the aftertreatment assembly 22, the urea pot assembly 23, the two-stage oil-water separator assembly 24, the low-voltage bottle frame assembly 25, the fuel tank assembly 26, the mechanical power steering oil pump 27, the mechanical air conditioning compressor 28, the intercooler 29, the engine radiator 210, the engine electromagnetic fan 211, the air filter assembly 212, the air inlet port assembly 213, the chassis driving motor 3, the power battery assembly 31, the battery fixing bracket 311, the battery pack 312, the fuse box 313, the engineering upper package 4, the upper package driving motor 41, the cab 5, the integrated frame 6, the high-voltage distribution box 61, the electronic fan heat dissipation assembly 62, the electric power steering oil pump 63, the upper package driving motor controller 64, the multi-in-controller 65, the whole vehicle controller 66, the chassis driving motor controller 67, the battery cooling unit 68, the MSD switch 69, the charging port 610, the battery cooling kettle 611, the motor cooling kettle 612, and the high-voltage wire fixing plate 613.

Detailed Description

The invention has the core of providing a hybrid engineering vehicle, which achieves the effects of energy conservation and emission reduction through the mutual cooperation of an engine and a driving motor; the components are uniformly distributed and do not interfere with each other.

In order to make those skilled in the art better understand the technical scheme of the present invention, the following describes the hybrid engineering vehicle of the present invention in detail with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1A and fig. 1B, the two different side structures of the hybrid engineering vehicle provided by the invention are respectively shown; fig. 2A is a chassis structure diagram of the hybrid engineering vehicle provided by the invention; the vehicle frame assembly 1 is a bearing member of the whole vehicle, wherein the upper part is used for mounting and supporting other multiple components, the vehicle frame assembly 1 comprises two longitudinal beams 11 and cross beams 12 which are mutually fixedly connected to form a frame, the longitudinal beams 12 are arranged, the longitudinal beams extend along the length direction of the vehicle body, the cross beams 12 extend along the width direction of the vehicle body, and the longitudinal beams 11 and the cross beams 12 are approximately perpendicular to each other; the cross beams 12 are arranged in a plurality, and two ends of the cross beams 12 are fixed on the longitudinal beams 11 to form a frame structure.

The engine 2 supplies energy to the fuel oil for working, and the engineering machinery is usually driven by a diesel engine; the engine 2 and the gearbox 21 are arranged between the two longitudinal beams 11 and supported by the frame assembly 1, and the engine 2 and the gearbox 21 are linearly arranged along the length direction of the longitudinal beams 11; the engine 2 outputs power through a gearbox 21, the gearbox 21 drives a transmission shaft 18 to rotate, and the transmission shaft 18 further transmits to wheels to enable the wheels to rotate.

One of the longitudinal beams 11 is positioned on the outer side between the first bridge A and the second bridge B and is fixedly provided with a post-treatment assembly 22, and the outer side of the longitudinal beam 11 positioned between the second bridge B and the middle bridge C is fixedly provided with a urea pot assembly 23, a two-stage oil-water separator assembly 24, a low-voltage electric bottle frame assembly 25 and a fuel tank assembly 26 which are matched with the engine 2.

The axle is connected with the frame assembly 1 through the suspension, and the wheel is installed to the tip of axle, and the effect of axle is connected wheel and automobile body, bears the load of car, and for engineering vehicle, usually set up many axles, as shown in fig. 2A, one bridge A corresponds the forefront a pair of wheels, and two bridge B corresponds the second pair of wheels, and middle bridge C corresponds the third pair of wheels, and rear axle D corresponds the fourth pair of wheels.

The aftertreatment assembly 22 is positioned between the first bridge and the second bridge to facilitate connection with the engine 2, and the aftertreatment assembly 22 is used for receiving and treating exhaust gas discharged from the engine 2; a urea pot assembly 23, a two-stage oil-water separator assembly 24, a fuel tank assembly 26 and a low-voltage electric bottle frame assembly 25 are arranged between the two bridges, and the urea pot assembly 23 and the post-treatment assembly 22 are positioned nearer to each other and are used for conveying urea to the post-treatment assembly 22; the two-stage oil-water separator assembly 24 is used for filtering the oil supply of the engine and removing the moisture in the fuel oil, and the two-stage oil-water separator assembly 24 and the fuel tank assembly 26 are adjacently arranged, so that the length of a pipeline is shortened; the main body parts of the engine 2 and the gearbox 21 are positioned between the first bridge and the second bridge, and the two-stage oil-water separator assembly 24 and the oil inlet of the engine 2 are positioned on the same side, so that the arrangement of fuel pipes is facilitated. The low voltage battery bottle frame assembly 25 contains a low voltage battery to power the low voltage components of the whole vehicle and the engine starting motor.

The chassis driving motor 3 is arranged in line with the engine 2 and the gearbox 21, and is shown in fig. 2B and 2C, and is respectively a top view and a side view of the front part of the frame assembly 1; the chassis driving motor 3 is positioned between the engine 2 and the gearbox 21; the chassis driving motor 3 outputs power through the gearbox 21, and the chassis driving motor 3 and the engine 2 can work independently to drive the gearbox 21. The power battery assembly 31 is fixedly arranged on the outer side of the other longitudinal beam 11, the power battery assembly 31 is positioned between the two bridges and the middle bridge, the power battery assembly 31 and the chassis driving motor 3 are matched to work, and electric energy can be provided for the chassis driving motor 3 so that the chassis driving motor 3 rotates to work.

The engineering upper part 4 is arranged at the rear part of the upper surface of the frame assembly 1, and the engineering upper part 4 is used for realizing engineering operation; a cab 5 is mounted on the front of the upper surface of the frame assembly 1 for operational control.

The hybrid engineering vehicle can be independently driven by the chassis driving motor 3 or the engine 2 respectively, realizes double-power output, is driven by the gearbox 21, and is switched to different driving modes according to different driving states of the vehicle, so that the fuel consumption in starting and low-speed driving processes is reduced, the engine 2 is used for driving during driving adjustment, the chassis driving motor 3 does not need to work for a long time, the burden is small, and the effects of energy conservation and emission reduction are achieved. The invention respectively arranges the parts matched with the engine 2 and the parts matched with the chassis driving motor 3 at two sides of the longitudinal beam 11, adopts modularized design, and the fuel driving parts and the electric driving parts are arranged independently and uniformly, do not interfere with each other, reasonably utilizes the space of the frame assembly 1, and has reasonable layout.

The chassis driving motor 3 can serve as a generator in the downhill or braking process, kinetic energy is recovered and converted into electric energy for standby, and a certain braking force is generated when the chassis driving motor 3 serves as the generator, so that the running cost of a vehicle is reduced; in order to recover the regenerative braking energy to the maximum extent, the regenerative braking of the chassis driving motor 3 is preferentially performed through a control strategy, and when the regenerative braking of the chassis driving motor 3 cannot meet the braking strength or the battery SOC reaches the maximum limit value, the mechanical braking is participated in the work again, so that the reliability of the braking process is ensured.

The pure electric vehicle has the problems of large self weight, short endurance mileage and the like, so that the pure electric vehicle is difficult to apply in a large scale in engineering vehicles, and the hybrid engineering vehicle is driven by two kinds of power, the driving mileage is not limited by the capacity of a battery, and the obvious energy-saving and emission-reducing effects can be achieved.

In the hybrid engineering vehicle of the present invention, the engine 2 is a main power source, and the chassis drive motor 3 is an auxiliary power source. Therefore, the working points of the two power devices are optimized according to different working conditions, the energy distribution ratios of the two power sources are reasonably distributed, the purpose of optimal fuel consumption is achieved, and various factors are comprehensively considered under the condition of ensuring the power performance to determine an energy distribution strategy.

The chassis driving motor 3 has the dual functions of electric power and power generation, and the speed characteristic of the power generation state of the chassis driving motor 3 is basically the same as that of the electric state. In order to recover as much braking energy as possible, the chassis drive motor 3 may be used to absorb braking energy and feed it back to the battery assembly 31 for storage during vehicle coasting or braking. In order to recover the regenerative braking energy to the maximum extent, the control strategy determines to preferentially regeneratively brake by the chassis driving motor 3, and when the chassis driving motor 3 cannot meet the braking strength of the whole vehicle or the battery SOC reaches the maximum limit value, the mechanical braking participates in the work, so that the reliability of the braking process is ensured.

The following description is made for different operation driving modes:

in the pure electric mode, the VCU whole vehicle controller controls the chassis driving motor to independently drive the vehicle to run according to the vehicle state and basic parameters of each power component, and the engine is in a closed state and is used for starting or running at a low speed. And the VCU calculates the target driving torque of the chassis driving motor according to the state of each controller and sends the target driving torque to the MCU driving motor controller for execution.

In the pure engine mode, when the whole vehicle required torque is in an optimal working interval of the engine, the engine has better economy and emission, the electric quantity of the power battery is at a higher level, the hybrid power system works in the pure engine mode, and the whole vehicle required torque is provided by the engine. The VCU calculates a target torque of the engine according to the state of each controller, and sends the target torque to the ECU engine controller for execution.

In the hybrid power mode, when the required torque of the whole vehicle is larger than the maximum working torque of the engine and the electric quantity is higher than a set threshold value, the engine works on a maximum working curve, and the redundant required torque is provided by the chassis driving motor, so that the engine has better fuel economy and can meet the power requirement. When the required torque of the whole vehicle is smaller than the minimum working torque of the engine, the engine works on the minimum working curve at the moment, and the redundant required torque charges the battery assembly 31 through the chassis driving motor, so that the engine is ensured to work in a better area all the time.

Table 1 shows the basic control strategy for the different modes of operation. As shown in fig. 7, a graph of the operation modes corresponding to the different phases of the driving cycle is shown.

TABLE 1 basic control strategy for different modes of operation

On the basis of the scheme, the hybrid engineering vehicle further comprises an integrated frame 6 arranged between the engineering upper garment 4 and the cab 5, wherein the integrated frame 6 is of a box structure, other parts can be installed inside the integrated frame 6, and the integrated frame 6 is fixed on the frame assembly 1 through a connecting plate at the bottom; as shown in fig. 3A, which is a front view of the integration frame 6, fig. 3B to 3D are a left side view, a right side view, and a top view of the integration frame 6, respectively; the integrated frame 6 is divided into three independent spaces in the transverse direction, namely a left inner cavity, a middle inner cavity and a right inner cavity, wherein the left side in the figure 3A is a first inner cavity, the middle is a second inner cavity and the right side is a third inner cavity; the first cavity is provided with a high-voltage distribution box 61 and a high-voltage wire fixing plate 613, the second cavity is provided with a controller, and the third cavity is provided with an electronic fan radiating assembly 62.

The high-voltage distribution box 61 is on the same side as the power battery assembly 31, so that high-voltage wire connection is facilitated; in order to facilitate the fixing of the high-voltage line, a high-voltage line fixing plate 613 is provided below the high-voltage distribution box 61. The electronic fan radiating assembly 62 is arranged forwards, so that air suction and heat radiation are facilitated, and the electronic fan radiating assembly 62 blows air to the heat exchanger to accelerate heat exchange with air.

Preferably, the mechanical power-assisted steering oil pump 27 is arranged on the engine 2, and the electric power-assisted steering oil pump 63 is arranged in the first inner cavity of the integrated frame 6; the steering oilcan 14 and the steering gear 15 are mounted on the frame assembly 1, and the mechanical power steering oil pump 27 and the electric power steering oil pump 63 can respectively and independently control the steering gear 15.

The electric power steering oil pump 63 is arranged at the bottom of the frame assembly 1 on the same side as the high-voltage distribution box 61; the electric power steering oil pump 63 is located close to the mechanical power steering oil pump 27 provided on the engine 2 on the same side as the steering pot 14 and the steering gear 15.

The steering system adopts double-source control, the steering machine 15 is independently controlled by the mechanical power-assisted steering oil pump 27 and the electric power-assisted steering oil pump 63 respectively, and in the process of adopting engine driving or motor driving, the steering power assistance is realized by two different power assistance modes respectively; both steering assistance modes are hydraulically controlled, and the mechanical power-assisted steering oil pump 27 and the electric power-assisted steering oil pump 63 respectively control the steering gear 15 to realize steering assistance.

The engine 2 is provided with a mechanical air conditioner compressor 28, the frame assembly 1 is provided with an electric air conditioner compressor 13, so that the air conditioner system realizes double-source control; the electric air conditioner compressor 13 is arranged on the front side of the frame assembly 1, on the side of the post-treatment assembly 22, adjacent to the air conditioner condenser 19, and the air conditioner condenser 19 is arranged on the front side of the frame assembly.

As shown in fig. 4A and 4B, the overall structure diagrams of the hybrid engineering vehicle including the engineering upper garment 4 according to the present invention are shown respectively; the engineering upper part 4 is a stirring tank, concrete is contained in the stirring tank, the upper part driving motor 41 is arranged on the frame assembly 1, and the upper part driving motor 41 drives the engineering upper part 4 to rotate. The stirring tank is driven by the motor, and the motor is independently driven to rotate relative to the traditional mode that the flywheel shell of the engine is required to be driven to rotate, so that the normal operation of the stirring tank is not influenced under the flameout state of the engine, and the oil-saving effect can be achieved. A complete working condition of the concrete mixing transport vehicle comprises stopping starting, feeding and stirring, running and stirring, waiting for discharging and stirring, reversing discharging and stopping rotation of a return cylinder. Under the working condition of waiting for unloading and stirring, the engine 2 can stop working, and the uploading driving motor 41 can be beneficial to continuously driving uploading stirring by the electric quantity stored by the power battery assembly 31; the working condition can realize the purpose of saving fuel of the engine.

Preferably, the second inner cavity of the integrated frame 6 is vertically divided into three layers, namely an upper layer, a middle layer and a lower layer, and the upper driving motor controller 64 and the all-in-one controller 65 are arranged on the lower layer; the middle layer is provided with a whole vehicle controller 66 and a chassis driving motor controller 67; the upper layer is provided with a battery cooling unit 68.

The upper drive motor controller 64 controls the upper drive motor 41, and the upper drive motor 41 is assigned high-voltage power by U, V, W three-phase lines. The all-in-one controller 65 is used for controlling the electric air conditioner compressor 13, the electric power steering oil pump 63, DCDC (charging the low-voltage battery), and the like. The vehicle controller 66 is used to control the operation of the vehicle. The chassis driving motor controller 67 controls the chassis driving motor 3, the U, V, W three-phase line distributes high voltage power to the chassis driving motor 3, and when the braking working condition energy is paid back, power is reversely transmitted to the chassis driving motor controller 67, the battery high-voltage box is conducted, and then the battery assembly 31 is charged.

The battery cooling unit 68 is disposed rearward to facilitate heat dissipation. The battery cooling unit 68 is smoothly connected with the pipeline of the power battery assembly 31, and is beneficial to heat dissipation of the battery from high to low. The upper driving motor controller 64 is used for controlling the upper driving motor 41 to work, and the wiring port and the water inlet and outlet pipe port of the upper driving motor controller 64 are arranged backwards, so that high-voltage wire connection and cooling water pipe connection are facilitated.

The MSD switch 69 is arranged on the outer side wall of the first inner cavity of the integrated frame 6, the Chinese name is manual maintenance switch, the MSD switch 69 is used for controlling the on-off of the high-voltage distribution box 61, the MSD switch 69 is arranged towards the outer side, the MSD switch 69 is disconnected when an emergency situation occurs or the whole vehicle is overhauled, the high-voltage electricity of the whole vehicle is cut off, and the safety protection effect is achieved. The upper outer surface of the integrated frame 6 is provided with a switch door which is kept closed under normal conditions to prevent the MSD switch 69 from being inserted and pulled by mistake. A charging port 610 is arranged on the outer side wall of the third inner cavity of the integrated frame 6 and is used for being charged by an external power supply.

The battery high-voltage distribution box is provided with an MSD switch, the battery high-voltage distribution box is connected with the anode and the cathode of the battery through high-voltage wires, and the battery high-voltage distribution box distributes high-voltage power to the upper driving motor controller 64, the chassis driving motor controller 67 and the like. The charging port 610 is connected to a battery high voltage distribution box to charge the battery assembly 31.

A battery cooling water supplementing kettle 611 and a driving motor cooling water supplementing kettle 612 are arranged at the top of the integrated frame 6, and the battery cooling water supplementing kettle 611 is used for supplementing cooling liquid; adjacent to the battery cooling water replenishment kettle 611 is a conduit for replenishing water to the battery cooling unit 68 and the battery assembly 31.

As shown in fig. 5A and 5B, a top view and a side view of the frame assembly 1, respectively; on the basis of any one of the above technical solutions and the combination thereof, the longitudinal beams 11 constituting the frame assembly 1 in the present invention are arranged in a single layer, the front width of the two longitudinal beams 11 is larger than the rear width, and the engine 2, the chassis driving motor 3 and the gearbox 21 are arranged at positions where the front widths of the longitudinal beams 11 are larger.

The reinforcing plate is arranged at the joint of the cross beam 12 and the longitudinal beam 11, and the reinforcing plate is also arranged at the position where the distance between the two longitudinal beams 11 changes, so that the structural strength is improved. The cross beams 12 provided at the front and rear ends of the longitudinal beam 11 are provided with towing hooks, respectively, and reinforcing beams are provided at the towing hooks.

As shown in fig. 6A to 6C, a front view, a top view, and a side view of the power battery assembly 31, respectively; the power battery assembly 31 comprises battery fixing brackets 311 and battery packs 312, the battery fixing brackets 311 are groove-shaped, one battery pack 312 is placed in each battery fixing bracket 311, the battery fixing brackets 311 are stacked, detachable and fixedly assembled, one battery pack 312 is firstly installed in one battery fixing bracket 311 during installation, then the battery fixing brackets 311 and the battery packs 312 are integrally hoisted in place and fixed, and the lower-layer battery fixing bracket 311 is firstly installed and then the upper-layer battery fixing bracket 311 is installed, so that the installation operation is convenient.

The invention also comprises a skin surrounding the battery fixing bracket 311, which plays a role in protecting the battery pack 312; two fuse boxes 313 are fixedly arranged outside the skin, the two fuse boxes 313 are respectively used for a circuit corresponding to the chassis driving motor 3 and a circuit corresponding to the engine 2, and the two fuse systems respectively and independently realize overload protection.

In order to fully utilize the space, an air cylinder 16 and a dryer assembly 17 are arranged between the two longitudinal beams 11 of the frame assembly 1; the air reservoir 16 is used for providing brake air for the pneumatic brake components, and the dryer assembly 17 comprises a dryer, a condenser and a four-loop valve assembly, and all components of the brake system are adjacently arranged, so that brake pipelines are conveniently connected.

An intercooling 29, an engine radiator 210 and an engine electromagnetic fan 211 are arranged in front of the engine 2;

an air filter assembly 212 and an air inlet passage assembly 213 are arranged above the outer side of the longitudinal beam 11, and air is supplied to the engine 2 through the air inlet passage assembly 213 and the air filter assembly 212.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A hybrid engineering vehicle, characterized by comprising:

the frame assembly (1) comprises a longitudinal beam (11) and a transverse beam (12) which are mutually fixedly connected to form a frame;

-an engine (2), said engine (2) and gearbox (21) being arranged between two of said stringers (11); -said engine (2) outputting power through said gearbox (21); one of the longitudinal beams (11) is fixedly arranged on the outer side between the first bridge and the second bridge and is fixedly provided with a post-treatment assembly (22), and a urea pot assembly (23), a two-stage oil-water separator assembly (24), a low-voltage battery frame assembly (25) and a fuel tank assembly (26) are fixedly arranged on the outer side between the second bridge and the middle bridge;

the chassis driving motor (3) is arranged in line with the engine (2) and the gearbox (21), and the chassis driving motor (3) outputs power through the gearbox (21); the power battery assembly (31) is fixedly arranged on the outer side of the other longitudinal beam (11);

an engineering upper part (4) arranged at the rear part of the frame assembly (1);

a cab (5) mounted on the front part of the frame assembly (1);

the integrated frame (6) is arranged between the engineering upper garment (4) and the cab (5);

the integrated frame (6) is transversely divided into three independent spaces, a controller is arranged in a second inner cavity of the middle part, a high-voltage distribution box (61) and a high-voltage wire fixing plate (613) are arranged in a first inner cavity positioned at one side, and an electronic fan radiating assembly (62) is arranged in a third inner cavity positioned at the other side;

a mechanical power-assisted steering oil pump (27) is arranged on the engine (2), and an electric power-assisted steering oil pump (63) is arranged in a first inner cavity of the integrated frame (6);

a steering oilcan (14) and a steering gear (15) are arranged on the frame assembly (1), and the mechanical power-assisted steering oil pump (27) and the electric power-assisted steering oil pump (63) can respectively and independently control the steering gear (15);

the second inner cavity of the integrated frame (6) is vertically divided into three layers, and an upper driving motor controller (64) and an all-in-one controller (65) are arranged on the lower layer; the middle layer is provided with a whole vehicle controller (66) and a chassis driving motor controller (67); the upper layer is provided with a battery cooling unit (68);

an MSD switch (69) is arranged on the outer side wall of the first inner cavity of the integrated frame (6), and a charging port (610) is arranged on the outer side wall of the third inner cavity of the integrated frame (6);

a battery cooling water supplementing kettle (611) and a driving motor cooling water supplementing kettle (612) are arranged at the top of the integrated frame (6).

2. Hybrid engineering vehicle according to claim 1, characterized in that a mechanical air conditioning compressor (28) is mounted on the engine (2), and an electric air conditioning compressor (13) is mounted on the frame assembly (1).

3. The hybrid engineering vehicle according to claim 1, wherein the engineering upper garment (4) is a stirring tank, an upper garment driving motor (41) is installed on the frame assembly (1), and the upper garment driving motor (41) drives the engineering upper garment (4) to rotate.

4. A hybrid engineering vehicle according to any one of claims 1 to 3, characterized in that the stringers (11) constituting the frame assembly (1) are provided in a single layer, the front width of two stringers (11) being greater than the rear width; the engine (2), the chassis driving motor (3) and the gearbox (21) are arranged at the front part of the longitudinal beam (11);

a reinforcing plate is arranged at the joint of the cross beam (12) and the longitudinal beam (11); the reinforcing plates are arranged at the positions where the distance between the two longitudinal beams (11) changes.

5. The hybrid engineering vehicle according to claim 4, wherein the power battery assembly (31) includes a battery fixing bracket (311) and a battery pack (312), the battery fixing bracket (311) being laminated and detachably fixed;

further comprising a skin surrounding the battery fixation bracket (311); two fuse boxes (313) are fixedly arranged outside the skin.

6. Hybrid engineering vehicle according to claim 5, characterized in that an air reservoir (16), a dryer assembly (17) are mounted between the two longitudinal beams (11) of the frame assembly (1).

7. The hybrid engineering vehicle according to claim 4, characterized in that an intercooler (29), an engine radiator (210) and an engine electromagnetic fan (211) are arranged in front of the engine (2);

an air filtering assembly (212) and an air inlet channel assembly (213) are arranged above the outer side of the longitudinal beam (11).