Electric drive dual-purpose three-wheeled tractor

Abstract

The utility model relates to a kind of electric drive dual-purpose three-wheel tractor, belong to track tractor field. Including car body, guide wheel and driving rubber wheel, power battery and hydraulic station are set on car body, the front side and rear side of car body are respectively provided with connecting car hook;The new energy three-wheel public railway dual-purpose tractor provided by the utility model is combined by innovative three-wheel architecture and pure electric drive system, solves the technical problems of traditional tractor in mobility, environmental protection, mode switching reliability and the like, with significant technical progress and practical value, while designing cooperation 360 ° rotating wheel, can realize in-place steering and lateral movement, so that vehicle can freely maneuver in subway tunnel, factory workshop and other narrow space, solve the embarrassing situation of traditional tractor in limited environment "dilemma".

Description

Technical Field

[0001] This utility model relates to an electric dual-purpose three-wheeled tractor, belonging to the field of rail tractors. Background Technology

[0002] Traditional internal combustion engine dual-purpose road and rail tractors have low energy conversion efficiency and are significantly lacking in energy efficiency, environmental friendliness, and multi-functional adaptability, facing increasingly severe environmental pressures and energy cost issues.

[0003] Current new energy vehicles generally adopt a four-wheel or more wheel design architecture. While this layout can provide better stability, it also brings a series of problems such as a large turning radius, complex structure, and increased weight. Summary of the Invention

[0004] To address the above problems, this invention provides an electric dual-purpose three-wheeled tractor vehicle, which solves the problem of large turning radius for both road and rail transport.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0006] The present invention relates to an electric dual-purpose three-wheeled tractor, comprising a vehicle body, guide wheels and drive rubber wheels, wherein a power battery and a hydraulic station are installed on the vehicle body, and connecting couplers are respectively installed on the front and rear sides of the vehicle body;

[0007] The vehicle body is a frame structure with paired guide wheels, and a pair of guide wheels are installed at the front and rear of the lower part of the vehicle body.

[0008] The rear guide wheel is mounted on the rear swing lifting frame, and the top of the rear swing lifting frame is hinged to the lower part of the vehicle body. The front guide wheel is mounted on the front swing lifting frame, and the top of the front swing lifting frame is hinged to the lower part of the vehicle body. A forward pushing part is provided in the middle of the rear swing lifting frame, and a rear pushing part is provided in the middle of the front swing lifting frame. The forward pushing part and the rear pushing part are respectively hinged to the cylinder end of the lifting hydraulic cylinder and the piston rod end. When the lifting hydraulic cylinder drives the piston rod to extend, it pushes the rear swing lifting frame to swing backward and the front swing lifting frame to swing forward.

[0009] The drive rubber wheels consist of three sets, one set at the front and two sets at the rear, each with a built-in hub motor. The wheel axle is located at the bottom of the servo motor, which is mounted on a mounting hole in the vehicle body.

[0010] The power battery connects the hub motor and the hydraulic station's power motor, which provides hydraulic power to the lifting hydraulic cylinder.

[0011] According to the electric dual-purpose three-wheeled tractor, the vehicle body is provided with a cover covering the power battery, hydraulic station and steering gear. Warning lights are provided on the front and rear sides of the cover. The connecting coupler is located outside the cover. A working status light is provided on the top of the cover.

[0012] According to the electric dual-purpose three-wheeled tractor, the bottom of the vehicle body protrudes from the guide wheel system mounting mechanism, the top of the front swing lifting frame is hinged to the guide wheel system mounting mechanism, the front swing lifting frame and the rear swing lifting frame bend outward at the bottom to form guide wheel mounting positions, and the wheel axle of the guide wheel is fixed on the guide wheel mounting positions.

[0013] According to the electric dual-purpose three-wheeled tractor, the front of the vehicle body is provided with two sets of guide wheels, which are located on both sides of the front drive rubber wheel; the rear of the vehicle body is provided with two sets of guide wheels, which are located behind the rear drive rubber wheel. The three sets of drive rubber wheels are arranged in an isosceles triangle, and the center of gravity of the vehicle body is located at the center of gravity of the aforementioned isosceles triangle.

[0014] According to the electric dual-purpose three-wheeled tractor, the connecting coupler includes a lifting box, a lifting drive mechanism, a coupler, and a coupler lifting frame. The bottom of the lifting box is fixed to the front or rear end of the vehicle body. The lifting box has upper and lower through slots on the outer side wall. The sliding lifting part of the coupler lifting frame is disposed in the lifting box through the through slot. The lifting drive mechanism is disposed in the lifting box. A prime number of couplers are installed on the outside of the coupler lifting frame.

[0015] This utility model features a pure electric drive for the driving rubber wheel, an omnidirectional wheel design, and a hydraulic lifting guide wheel, enabling seamless switching between flexible steering on highways and high-precision guidance on railways.

[0016] Three drive wheels can rotate 360° to support lateral movement.

[0017] The three-wheeled structure of this utility model has a low profile, making it suitable for the traction needs of both road and rail vehicles in space-constrained environments. Attached Figure Description

[0018] Figure 1 This is a structural diagram of the present invention.

[0019] Figure 2 This is a schematic diagram illustrating the lifting principle of the guide wheel in this utility model.

[0020] Figure 3 This is a side structural view of the present invention.

[0021] Figure 4 This is a top view of the structure of this utility model.

[0022] Figure 5 This is a mechanical schematic diagram of this utility model.

[0023] Figure label:

[0024] 1. Car body; 2. Guide wheel; 3. Drive rubber wheel; 4. Rear swing lifting frame; 5. Front swing lifting frame; 6. Rear pusher; 7. Front pusher; 8. Lifting hydraulic cylinder; 9. Steering gear; 10. Hydraulic station; 11. Power battery; 12. Cover; 13. Warning light; 14. Working status light; 15. Guide wheel system mounting mechanism; 16. Guide wheel mounting position; 17. Lifting box; 18. Lifting drive mechanism; 19. Coupler; 20. Coupler lifting frame; 21. Electrical control box; 22. Track. Detailed Implementation

[0025] The specific structure of this utility model will be further described below:

[0026] This utility model relates to an electric dual-purpose three-wheeled tractor, comprising a vehicle body 1, guide wheels 2, and drive rubber wheels 3. A power battery 11 and a hydraulic station 10 are mounted on the vehicle body 1. Connecting couplers are respectively installed on the front and rear sides of the vehicle body 1. The guide wheels contact the rail for guidance when traveling on the rail, while the drive rubber wheels contact the ground or rail to provide power to the tractor when traveling on roads or railways.

[0027] The vehicle body 1 of this device has a frame structure, and the guide wheels 2 are arranged in pairs, with a pair at the front and rear of the lower part of the vehicle body 1.

[0028] The rear guide wheel 2 is mounted on the rear swing lifting frame 4, and the top of the rear swing lifting frame 4 is hinged to the lower part of the vehicle body 1. The front guide wheel 2 is mounted on the front swing lifting frame 5, and the top of the front swing lifting frame 5 is hinged to the lower part of the vehicle body 1. The rear swing lifting frame 4 has a forward push part 7 in the middle, and the front swing lifting frame 5 has a rear push part 6 in the middle. The forward push part 7 and the rear push part 6 are respectively hinged to the cylinder end of the lifting hydraulic cylinder 8 and the piston rod end. When the lifting hydraulic cylinder 8 drives the piston rod to extend, it pushes the rear swing lifting frame 4 to swing backward and the front swing lifting frame 5 to swing forward.

[0029] The drive rubber wheels 3 consist of three sets, one set on the front and two sets on the rear, each with a built-in hub motor. The wheel axle is located at the lower part of the servo motor 9, which is mounted on a mounting hole opened in the vehicle body 1.

[0030] The power battery 11 connects the hub motor and the power motor of the hydraulic station 10, which provides hydraulic power to the lifting hydraulic cylinder 8.

[0031] The vehicle body 1 is provided with a cover 12, which covers the power battery 11, hydraulic station 10 and servo motor 9. Warning lights 13 are provided on the front and rear sides of the cover 12. The connecting hook is located outside the cover 12. A working status light 14 is provided on the top of the cover 12.

[0032] The bottom of the vehicle body 1 has a protruding guide wheel system mounting mechanism 15. The top of the front swing lifting frame 5 is hinged to the guide wheel system mounting mechanism 15. The front swing lifting frame 5 and the rear swing lifting frame 4 are bent outward at the bottom to form a guide wheel mounting position 16. The wheel axle of the guide wheel 2 is fixed on the guide wheel mounting position 16.

[0033] The two sets of guide wheels 2 at the front are located on both sides of the front drive rubber wheel 3, and the two sets of guide wheels 2 at the rear are located behind the rear drive rubber wheel 3. The three sets of drive rubber wheels 3 are arranged in an isosceles triangle, and the center of gravity of the vehicle body 1 is located at the center of gravity of the aforementioned isosceles triangle.

[0034] The connecting coupler includes a lifting box 17, a lifting drive mechanism 18, a coupler, and a coupler lifting frame 20. The bottom of the lifting box 17 is fixed to the front or rear end of the vehicle body 1. The lifting box 17 has upper and lower through slots on its outer sidewall. The sliding lifting part of the coupler lifting frame 20 is disposed in the lifting box 17 through the through slot. The lifting drive mechanism 18 is mounted on the lifting box 17. The coupler is installed on the outside of the coupler lifting frame 20.

[0035] This utility model features a pure electric drive for the driving rubber wheel, an omnidirectional wheel design, and a hydraulic lifting guide wheel, enabling seamless switching between flexible steering on highways and high-precision guidance on railways.

[0036] Three drive wheels can rotate 360° to support lateral movement.

[0037] The three-wheeled structure of this utility model has a low profile, making it suitable for the traction needs of both road and rail vehicles in space-constrained environments.

[0038] The battery pack is located in the middle of the vehicle body, and the traction devices are located at the front and rear ends. A hydraulic system drives the raising and lowering of the railway running gear to achieve the switching between road and rail modes. The drive unit provides power for the road-rail movement. This invention uses a pure electric drive system equipped with two independently controlled continuously variable motors to achieve independent drive for the two rear wheels; all three wheels have 360° rotation capability, enabling on-the-spot turning and lateral movement; it integrates a dual-mode road and rail walking system, with mode switching achieved through liftable guide wheels.

[0039] The beneficial effects of this invention are as follows: The new energy three-wheeled road-rail dual-purpose tractor provided by this invention solves the technical problems of traditional tractors in terms of mobility, environmental protection, and reliability of mode switching through the organic combination of an innovative three-wheeled architecture and a pure electric drive system, demonstrating significant technological progress and practical value. The three-wheeled design of this invention, combined with 360° rotating wheels, enables on-the-spot turning and lateral movement, reducing the turning radius to almost zero. This feature allows the vehicle to move freely in narrow spaces such as subway tunnels and factory workshops, solving the awkward situation of traditional tractors being "difficult to move forward or backward" in restricted environments. Pure electric drive, zero emissions, and meeting environmental protection requirements; omnidirectional wheel design enables lateral movement, providing extremely high mobility; the hydraulic system can complete road-rail mode switching within seconds, achieving second-level switching; dual motors are independently controlled, allowing for limp-back return in case of single motor failure.

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