Highway-railway dual-purpose tractor capable of achieving auxiliary driving

Abstract

A highway-railway dual-purpose tractor capable of achieving auxiliary driving comprises a chassis, a front traction device and a front guiding device which are arranged at the front end of the chassis, a rear guiding device and a rear traction device which are arranged at the rear end of the chassis, and an auxiliary driving system. The auxiliary driving system comprises a mounting framework, a swing arm, a telescopic driving device and a rubber wheel driving device, the mounting framework is mounted on the chassis girder and located behind the front axle, the top end of the swing arm is hinged to the mounting framework, the rubber wheel driving device is connected to the bottom end of the swing arm, and the telescopic driving device is connected to the mounting framework; the output end of the telescopic driving device is connected with the swing arm and used for controlling the electric driving rubber wheel device to rotationally descend and retract. Compared with the prior art, according to the highway-railway dual-purpose tractor, the auxiliary driving system is arranged on the chassis girder and located behind the front axle, most of the mass of the front axle is loaded on the rubber wheel driving device connected with the rail, the mass of the whole tractor participating in traction output is increased, and the maximum railway starting traction of the whole tractor is improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of dual-purpose road-rail tractor vehicles, specifically relating to a dual-purpose road-rail tractor vehicle that can provide auxiliary drive. Background Technology

[0002] When a dual-purpose road-rail tractor is performing railway traction operations, it generally travels at low speeds. At startup, its starting resistance must be greater than its own running resistance. Traction operations can only commence when the starting traction force provided by the dual-purpose road-rail tractor exceeds the starting resistance. Therefore, the key parameter of a dual-purpose road-rail tractor is its maximum starting traction force. This starting traction force is related to the load on the drive wheels and the coefficient of friction; the greater the load on the drive wheels, the greater the starting traction force.

[0003] Chinese patent 202010215604.3 discloses a dual-purpose road-rail tractor, which increases traction by adding a bidirectional drive device between the front and rear axles of the chassis, enabling the original single-axle drive chassis to achieve dual-axle drive. However, this involves modifying the chassis transmission and power units, changing the original chassis model parameters, and requiring a comprehensive re-verification of the chassis's performance, resulting in high costs.

[0004] Chinese Patent 202311145273.0 discloses a dual-purpose road-rail tractor, which, while using a rear axle rubber-tired drive system, adds a front rubber-tired drive device at the front suspension of the chassis for auxiliary drive during starting, increasing the vehicle's starting traction. However, because the front rubber-tired drive is located at the front suspension of the chassis, it is relatively far from the center of the front axle and the front guide wheel in the longitudinal direction of the vehicle. During starting traction, the load-bearing capacity of the front rubber-tired drive is limited, meaning the increase in starting traction is limited. Utility Model Content

[0005] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a dual-purpose road and rail tractor that can be driven by auxiliary means.

[0006] To achieve the above objectives, this utility model discloses a dual-purpose road-rail tractor that can be driven by auxiliary drive, including a chassis, a front traction device and a front guide device located at the front end of the chassis, a rear guide device and a rear traction device located at the rear end of the chassis, and an auxiliary drive system.

[0007] The auxiliary drive system includes a mounting frame, a swing arm, a telescopic drive device, and a rubber wheel drive device. The mounting frame is mounted on the chassis beam and located behind the front axle. The top end of the swing arm is hinged to the mounting frame. The rubber wheel drive device is connected to the bottom end of the swing arm. The telescopic drive device is connected to the mounting frame. The output end of the telescopic drive device is connected to the swing arm and is used to control the rotation and descent of the electrically driven rubber wheel device.

[0008] Preferably, the mounting frame includes a mounting base and a support plate, the mounting base is fixed on the chassis beam, and the support plate connects the swing arm and the telescopic drive device.

[0009] Preferably, the telescopic drive device is hinged to the mounting frame, and the output end of the telescopic drive device is hinged to the swing arm.

[0010] Preferably, the swing arm is connected to the middle position of the swing arm.

[0011] Preferably, the rubber wheel drive device includes a connecting shaft, rubber wheels respectively connected to both ends of the connecting shaft, and a rotary drive device connected to the rubber wheels. The rotary drive device is used to drive the rubber wheels to rotate, and the output end of the telescopic drive device is connected to the connecting shaft.

[0012] Preferably, the rotary drive device includes a motor and a reducer, with the motor connected to the rubber wheel via the reducer.

[0013] Preferably, there are two rotary drive devices, one of which is connected to a rubber wheel.

[0014] Preferably, the device also includes a generator set that supplies power to the rubber-wheel drive unit, the generator set being located above the rear axle of the chassis.

[0015] Preferably, the generator set is located above the center of the rear axle of the chassis.

[0016] Preferably, the telescopic drive device is a hydraulic cylinder or an electric cylinder.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] When a vehicle is used for railway starting and traction, if a large starting traction force is required, the telescopic drive device rotates the swing arm before starting traction, thereby lowering the rubber-tired drive device until it contacts the rail. Because the auxiliary drive system is located on the chassis beam and behind the front axle, near the center of gravity of the front axle, most of the front axle mass is loaded on the rubber-tired drive device connected to the rail. The rubber-tired drive device has a large load-bearing capacity, significantly increasing the total vehicle mass involved in traction output, ultimately increasing the maximum starting traction force of the entire vehicle for railway use. After the vehicle overcomes the maximum starting resistance and begins traction, the telescopic drive device retracts the swing arm, causing the rubber-tired drive device to retract and reset. The driving force generated by the rear traction device then becomes the traction force, and traction operation begins.

[0019] In addition to improving the maximum starting traction of the vehicle, the auxiliary drive system can be directly adapted to existing Class II chassis without altering the original chassis's power system, transmission system, or load-bearing capacity. This avoids chassis deformation, making the solution more widely applicable and reducing chassis-related development risks. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the dual-purpose road-rail tractor that can be assisted in driving, in the working state of the auxiliary drive system, as shown in the embodiment.

[0021] Figure 2 for Figure 1 Side view of the auxiliary drive system;

[0022] Figure 3 for Figure 1 Main view of the auxiliary drive system;

[0023] Figure 4 This is a schematic diagram of the structure of the dual-purpose road-rail tractor that can be assisted in driving in the embodiment when the assisted driving system is not working.

[0024] Chassis 100; Front traction device 200; Front guide device 300; Rear guide device 400; Rear traction device 500; Upper and lower rail road-rail conversion system 600; Gas control system 700; Auxiliary drive system 800;

[0025] Mounting frame 810; mounting base 811; support plate 812; swing arm 820; telescopic drive device 830; rubber wheel drive device 840; connecting shaft 841; rubber wheel 842; rotary drive device 843; motor 844; reducer 845; generator set 846. Detailed Implementation

[0026] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0027] A dual-purpose road-rail tractor with auxiliary drive capability, see [link / reference] Figure 1 It includes a chassis 100, a front traction device 200 and a front guide device 300 located at the front end of the chassis, and a rear guide device 400 and a rear traction device 500 located at the rear end of the chassis. This structure is the same as the existing road-rail dual-purpose tractor, and the tractor is driven by the rear traction device.

[0028] Understandably, the dual-purpose road-rail tractor also includes the upper and lower rail road-rail conversion system 600 and the gas generation system 700, which are existing components of the tractor and will not be described in detail here.

[0029] In this embodiment, the dual-purpose road-rail tractor also includes an auxiliary drive system 800, see [link / reference]. Figures 2-3The auxiliary drive system 800 includes a mounting frame 810, a swing arm 820, a telescopic drive device 830, and a rubber wheel drive device 840. The mounting frame 810 is mounted on the chassis beam and located behind the front axle. The top of the swing arm 820 is hinged to the mounting frame 810. The rubber wheel drive device 840 is connected to the bottom of the swing arm 820. The telescopic drive device 830 is connected to the mounting frame 810. The output end of the telescopic drive device 830 is connected to the swing arm 820, specifically by bolts to the middle position of the swing arm 820, for controlling the rotation and retraction of the electrically driven rubber wheel device.

[0030] When the vehicle is used for railway starting and traction, if a larger starting traction force is required, before starting traction, the telescopic drive device 830 drives the swing arm 820 to rotate, thereby lowering the rubber-tired drive device 840 until it contacts the rail. Because the auxiliary drive system 800 is located on the chassis beam and behind the front axle, near the center of gravity of the front axle, most of the front axle mass is loaded on the rubber-tired drive device 840 connected to the rail. The rubber-tired drive device 840 has a large load-bearing capacity, significantly increasing the total vehicle mass involved in traction output, ultimately increasing the maximum starting traction force of the entire vehicle for railway use. After the vehicle overcomes the maximum starting resistance and begins to move, the telescopic drive device 830 retracts the swing arm 820, driving the rubber-tired drive device 840 to retract and reset (see the state diagram). Figure 4 The traction operation begins by using the driving force generated by the rear traction device as the traction force.

[0031] In addition to improving the maximum starting traction of the vehicle, the Assist Drive System 800 can be directly adapted to existing Class II chassis without altering the original chassis's power system, transmission system, or load-bearing capacity, thus avoiding chassis deformation. This makes the solution more widely applicable and reduces chassis-related development risks.

[0032] See Figure 2 The mounting frame 810 includes a mounting base 811 and a support plate 812. The mounting base 811 is fixed to the side of the chassis beam, and the support plate connects the swing arm 820 and the telescopic drive device 830. The mounting frame 810 is specifically configured with a mounting base 811 and a support plate 812 to connect with the corresponding structure, which facilitates production and processing.

[0033] In this embodiment, the telescopic drive device 830 is hinged to the mounting frame 810, and the output end of the telescopic drive device 830 is hinged to the swing arm 820. The double-hinged design of the telescopic drive device 830 makes its operation more flexible and significantly reduces jamming.

[0034] See Figure 2The rubber wheel drive device 840 includes a connecting shaft 841, rubber wheels 842 connected to both ends of the connecting shaft 841, and a rotary drive device 843 connected to the rubber wheels. The rotary drive device 843 is used to drive the rubber wheels 842 to rotate. The output end of the telescopic drive device 830 is connected to the connecting shaft 841. This can improve the structural stability and ensure the synchronous lifting of the two rubber wheels 842.

[0035] The rotary drive device 843 includes a motor 844 and a reducer 845. The motor 844 is connected to the rubber wheel through the reducer 845. When the auxiliary drive system 800 is lowered for traction, the output of the motor 844 is reduced in speed and increased in torque after passing through the reducer 845, causing the rubber wheel to rotate slowly, thereby providing traction force.

[0036] There are two rotary drive devices 843. One rotary drive device 843 is connected to a rubber wheel. When working, the two rotary drive devices are linked and controlled to output synchronously.

[0037] In this embodiment, the rubber-tired drive unit 840 is electrically driven. Correspondingly, the dual-purpose road-rail tractor also includes a generator set 846 that supplies power to the rubber-tired drive unit 840. The generator set 846 is located above the rear axle of the chassis. When the tractor is driven by the rear drive unit 843, placing the generator set above the rear axle increases the load on the rear axle and the wheel set of the rear drive unit 843, thereby improving the starting traction of the rear drive unit 843.

[0038] Among them, generator set 846 is located above the center of the rear axle of the chassis, which is the position with the best stability.

[0039] In this embodiment, the telescopic drive device 830 is a hydraulic cylinder or an electric cylinder.

[0040] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. An auxiliary driveable amphibious tractor, comprising a chassis, a front traction device and a front guide device arranged at the front end of the chassis, a rear guide device and a rear traction device arranged at the rear end of the chassis, characterized in that: it further comprises an auxiliary drive system; the auxiliary drive system comprises a mounting frame, a swing arm, a telescopic drive device and a rubber wheel drive device, the mounting frame is mounted on the chassis girder and located behind the front axle, the top end of the swing arm is hinged to the mounting frame, the rubber wheel drive device is connected to the bottom end of the swing arm, the telescopic drive device is connected to the mounting frame, the output end of the telescopic drive device is connected with the swing arm, for controlling the swing arm to descend and retract.

2. The assisted driveable amphibious tractor of claim 1, wherein: the mounting frame comprises a mounting seat and a supporting plate, the mounting seat is fixed on the chassis girder, and the supporting plate is connected with the swing arm and the telescopic drive device.

3. The assisted driveable amphibious tractor of claim 1, wherein: the telescopic drive device is hinged to the mounting frame, and the output end of the telescopic drive device is hinged to the swing arm.

4. The assisted driveable amphibious tow vehicle of claim 1, wherein: the swing arm is connected to the middle position of the swing arm.

5. The assisted driveable amphibious tow vehicle of claim 1, wherein: the rubber wheel drive device comprises a connecting shaft, rubber wheels connected to both ends of the connecting shaft respectively, and a rotary drive device connected to the rubber wheels, the rotary drive device is used to drive the rubber wheels to rotate, and the output end of the telescopic drive device is connected to the connecting shaft.

6. The assisted driveable amphibious tractor of claim 5, wherein: the rotary drive device comprises a motor and a speed reducer, and the motor is connected with the rubber wheels through the speed reducer.

7. The assisted driveable amphibious tractor of claim 5, wherein: the rotary drive device has two, one rotary drive device is connected to one rubber wheel.

8. The assisted driveable amphibious tractor of any one of claims 1-7, wherein: it further comprises a generator set for supplying power to the rubber wheel drive device, and the generator set is arranged above the rear axle of the chassis.

9. The assisted driveable amphibious tractor of claim 8, wherein: the generator set is located above the center of the rear axle of the chassis.

10. The assisted driveable amphibious tow vehicle of claim 1, wherein: the telescopic drive device is a hydraulic oil cylinder or an electric cylinder.

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