Electric self-propelled module transport vehicle

Abstract

The invention discloses an electric self-propelled module transport vehicle which comprises a vehicle frame body, a battery assembly, hydraulic lifting and steering assemblies, an electric drive axle, walking wheels and an electric control assembly, the battery assembly and the electric control assembly are arranged in the middle of the bottom side of the vehicle frame body, and the hydraulic lifting and steering assemblies are arranged on the two sides of the bottom of the vehicle frame body. An electric drive axle is arranged at the bottom of the hydraulic lifting and steering assembly, and walking wheels are fixedly installed at the two ends of the electric drive axle. The electric control assembly is electrically connected with the battery assembly, the hydraulic lifting and steering assembly and the electric drive axle. The transport vehicle is purely electrically driven and is flexible in steering, high in bearing capacity and wide in application prospect.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of transport vehicles, in particular to an electric self-propelled modular transport vehicle. BACKGROUND

[0002] The self-propelled modular transport vehicle is mainly used for the transportation of steel box girders, and can also be used for industrial logistics transportation. The whole vehicle has many advantages such as adjustable load plane height, uniform wheel axle load, small turning radius, flexible steering mode, and variable load capacity. At present, the power system of the mainstream self-propelled modular transport vehicle generally uses a high-power diesel engine to drive a variable hydraulic pump to provide power for a wheel edge hydraulic motor, forming a hydrostatic drive mode. This mode can meet the continuous stability requirements of power output for heavy load transportation. However, with the increasingly stringent global environmental regulations, the emission problem of traditional diesel-powered self-propelled modular transport vehicles has become a core bottleneck restricting their development and application.

[0003] Therefore, it is of great practical significance and industry value to develop a power system optimization scheme that can adapt to the heavy load characteristics of self-propelled modular transport vehicles, fundamentally solve the diesel emission problem, and also consider the power performance and reliability. SUMMARY

[0004] The purpose of the present application is to provide an electric self-propelled modular transport vehicle that can solve the technical problem of diesel emission of self-propelled modular transport vehicles at the present stage.

[0005] To achieve the above-mentioned purpose, the present application adopts the following technical scheme: An electric self-propelled modular transport vehicle, comprising a vehicle frame body, a battery assembly, a hydraulic lifting and steering assembly, an electric drive axle, a walking wheel and an electric control assembly, the battery assembly and the electric control assembly are arranged in the middle part of the bottom side of the vehicle frame body, a plurality of hydraulic lifting and steering assemblies are arranged on both sides of the bottom of the vehicle frame body, an electric drive axle is arranged at the bottom of the hydraulic lifting and steering assembly, and the walking wheels are fixedly installed at both ends of the electric drive axle; the electric control assembly is electrically connected with the battery assembly, the hydraulic lifting and steering assembly and the electric drive axle.

[0006] Preferably, eight hydraulic lifting and steering assemblies are arranged.

[0007] Preferably, the battery assembly converts electrical energy into hydraulic energy through an electric hydraulic pump, so that the hydraulic lifting and steering assembly drives the walking wheel to turn and lift.

[0008] Preferably, the hydraulic lifting and steering assembly comprises a hydraulic steering base, a support arm, a suspension arm and a lifting hydraulic cylinder, the hydraulic steering base is fixedly installed at the bottom of the frame body, one end of the support arm is fixedly installed on the hydraulic steering base, the other end of the support arm is hingedly connected with the suspension arm, the electric drive axle is arranged at the bottom of the suspension arm, and the two ends of the lifting hydraulic cylinder are hingedly arranged on the hydraulic steering base and the support arm respectively, the hydraulic steering base drives the support arm to rotate to realize steering, and the lifting hydraulic cylinder controls the ground clearance of the frame body through extension and retraction.

[0009] The application discards the traditional diesel engine driving mode, adopts a battery assembly as a core power source, and drives the vehicle to travel through an electric drive axle. The whole power transmission process is free of diesel combustion, zero tail gas emission can be realized, and the exhaust emission problem of the traditional diesel power transport vehicle is fundamentally solved. The electric system operates with lower noise, and the sound environment of the operation area can be significantly improved.

[0010] The hydraulic lifting and steering assembly integrates the steering and lifting functions, the support arm is driven to rotate by the hydraulic steering base to realize flexible steering, and the precise regulation and control of the electric control assembly can continue the advantages of the small turning radius and flexible steering mode of the traditional module transport vehicle; meanwhile, the extension and retraction of the lifting hydraulic cylinder can conveniently adjust the ground clearance of the frame body, and adapt to the traffic demand of different road conditions and operation scenes. Compared with the traditional diesel power vehicle, the cooperative control of the electric control assembly and the hydraulic system is more precise, stepless speed regulation of power output can be realized, and the driving smoothness and operation accuracy are improved.

[0011] The battery assembly and the electric control assembly are arranged centrally at the middle of the bottom side of the frame body, and eight hydraulic lifting and steering assemblies are arranged on both sides, the symmetrical layout makes the vehicle gravity center in the middle, the driving stability is stronger, and the interference between the power components and the bearing area is avoided. The electric control assembly can monitor parameters such as battery SOC, hydraulic system pressure and motor temperature in real time, realize overload protection and fault warning, reduce maintenance cost and prolong service life of the whole vehicle. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the application; Figure 2 It is a schematic diagram of the local structure of the application; In the figure: 1, frame body; 2, battery assembly; 3, hydraulic lifting and steering assembly; 4, electric drive axle; 5, traveling wheel; 6, electric control assembly; 30, hydraulic steering base; 31, support arm; 32, suspension arm; 33, lifting hydraulic cylinder. DETAILED DESCRIPTION

[0013] The application will be further described below in combination with the drawings: As Figure 1 andFigure 2 The electric self-propelled modular transport vehicle shown includes a frame body 1, a battery pack 2, a hydraulic lifting and steering assembly 3, an electric drive axle 4, wheels 5, and an electronic control assembly 6.

[0014] Battery assembly 2 and electronic control assembly 6 are located on the lower center of the main frame 1. Battery assembly 2 converts electrical energy into hydraulic energy through an electric hydraulic pump, enabling the hydraulic lifting and steering assembly 3 to drive the driving wheels 5 to steer and lift. Battery assembly 2 can be a lithium battery pack or a lithium iron phosphate battery, or other types of batteries.

[0015] The electronic control unit 6 is electrically connected to the battery unit 2, the hydraulic lifting and steering unit 3, and the electric drive axle 4, and is used for the overall operation of the transport vehicle. The electronic control unit 6 is the vehicle controller.

[0016] Multiple sets of the aforementioned hydraulic lifting and steering components 3 are installed on both sides of the bottom of the main body 1 of the vehicle frame. Specifically, a total of eight sets of hydraulic lifting and steering components 3 are installed, evenly distributed on both sides of the bottom of the main body 1 of the vehicle frame.

[0017] The hydraulic lifting and steering assembly 3 includes a hydraulic steering base 30, a support arm 31, a suspension arm 32, and a lifting hydraulic cylinder 33. The hydraulic steering base 30 is fixedly installed at the bottom of the vehicle frame body 1. One end of the support arm 31 is fixedly installed on the hydraulic steering base 30, and the other end of the support arm 31 is hinged to the suspension arm 32. The electric drive axle 4 is located at the bottom of the suspension arm 32. The two ends of the lifting hydraulic cylinder 33 are respectively hinged to the hydraulic steering base 30 and the support arm 31. The hydraulic steering base 30 drives the support arm 31 to rotate, thereby achieving steering. The extension and retraction of the lifting hydraulic cylinder 33 controls the ground clearance of the vehicle frame body 1.

[0018] An electric drive axle 4 is installed at the bottom of the hydraulic lifting and steering assembly 3, and walking wheels 5 are fixedly installed at both ends of the electric drive axle 4.

[0019] The above embodiments are merely illustrative of the concept and implementation of the present invention and are not intended to limit it. Under the concept of the present invention, technical solutions without substantial changes are still within the scope of protection.

Claims

1. An electric self-propelled modular transport vehicle, characterized in that: The vehicle includes a frame body (1), a battery pack (2), a hydraulic lifting and steering assembly (3), an electric drive axle (4), wheels (5), and an electronic control assembly (6). The battery pack (2) and the electronic control assembly (6) are arranged in the middle of the bottom side of the frame body (1). Multiple sets of the hydraulic lifting and steering assemblies (3) are arranged on both sides of the bottom of the frame body (1). The electric drive axle (4) is arranged at the bottom of the hydraulic lifting and steering assembly (3). The wheels (5) are fixedly installed at both ends of the electric drive axle (4). The electronic control assembly (6) is electrically connected to the battery pack (2), the hydraulic lifting and steering assembly (3), and the electric drive axle (4).

2. The electric self-propelled modular transport vehicle according to claim 1, characterized in that: The hydraulic lifting and steering assembly (3) is set up in eight groups.

3. The electric self-propelled modular transport vehicle according to claim 1 or 2, characterized in that: The battery assembly (2) converts electrical energy into hydraulic energy through an electric hydraulic pump, which enables the hydraulic lifting and steering assembly (3) to drive the walking wheels (5) to turn and lift.

4. The electric self-propelled modular transport vehicle according to claim 3, characterized in that: The hydraulic lifting and steering assembly (3) includes a hydraulic steering base (30), a support arm (31), a suspension arm (32), and a lifting hydraulic cylinder (33). The hydraulic steering base (30) is fixedly installed at the bottom of the vehicle frame body (1). One end of the support arm (31) is fixedly installed on the hydraulic steering base (30), and the other end of the support arm (31) is hinged to the suspension arm (32). The electric drive axle (4) is located at the bottom of the suspension arm (32). The two ends of the lifting hydraulic cylinder (33) are respectively hinged to the hydraulic steering base (30) and the support arm (31). The hydraulic steering base (30) drives the support arm (31) to rotate, thereby achieving steering. The extension and retraction of the lifting hydraulic cylinder (33) controls the ground clearance of the vehicle frame body (1).

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