CN110549803B

CN110549803B - Highway-railway dual-purpose tractor

Info

Publication number: CN110549803B
Application number: CN201810571993.6A
Authority: CN
Inventors: 张永辉; 刘永; 孙凯
Original assignee: CRRC Qiqihar Rolling Stock Co Ltd
Current assignee: CRRC Qiqihar Rolling Stock Co Ltd
Priority date: 2018-05-31
Filing date: 2018-05-31
Publication date: 2021-03-02
Anticipated expiration: 2038-05-31
Also published as: CN110549803A

Abstract

The invention provides a highway and railway dual-purpose tractor, which comprises: the tractor comprises a tractor body, a driving device and a control device, wherein the tractor body comprises a vehicle body, ground wheels, rail wheels and a steering driving structure, the ground wheels are arranged at the bottom of the vehicle body, the rail wheels are arranged at the bottom of the vehicle body in a retractable manner, and the steering driving structure is connected with the ground wheels to drive the ground wheels to steer; when the wheels of the rail are positioned on the rail and the direction of the wheels on the ground is a preset direction, the steering driving structure has a forbidden first state. The technical scheme of the invention effectively solves the problem that the dual-purpose tractor for the highway and the railway derails due to the steering of the ground wheels when the dual-purpose tractor for the highway and the railway in the prior art runs on the rails.

Description

Highway-railway dual-purpose tractor

Technical Field

The invention relates to the technical field of highway and railway dual-purpose tractors, in particular to a highway and railway dual-purpose tractor.

Background

The tractor for both highway and railway is a special equipment which can be used for both running on the highway and traction operation on the railway, mainly for railway traction operation, and is widely applied to the rail transportation industry. The rail-road vehicle is generally used in railway stations, ports and docks, industrial and mining enterprises, large and medium-sized goods yards and other operation places with special railway lines, and is used as a tractor for shunting. The tractor for both highway and railway consists of power transmission system, steering system, braking system, hydraulic system, electric system, frame and suspension unit, highway and railway guide unit, coupler, etc. Most of the highway and railway dual-purpose tractors adopt a driving mode that rubber tires are used for both highway driving and railway driving. When the railway runs, the steel wheel for railway descends to support on the railway rail, and as the guide wheel, the rubber tyre partially presses on the rail to rub the rail for driving. When the road is used for walking, the guide wheels are retracted.

When the highway-railway dual-purpose tractor is used for traction running on a railway, the railway wheels and the rails have a self-steering function, so that a steering system is not needed for the vehicle. If the steering wheel is rotated at the moment, the driving wheels are rotated, and the steering system works, the self-guiding function of the railway guide wheels is interfered, so that the damage of equipment and the derailment accident of the vehicle are caused.

Disclosure of Invention

The invention mainly aims to provide a dual-purpose tractor for both roads and railways, which solves the problem that the dual-purpose tractor for both roads and railways is derailed due to the steering of ground wheels when the dual-purpose tractor for both roads and railways in the prior art runs on rails.

In order to achieve the above object, the present invention provides a tractor for both highway and railway, comprising: the tractor comprises a tractor body, a driving device and a control device, wherein the tractor body comprises a vehicle body, ground wheels, rail wheels and a steering driving structure, the ground wheels are arranged at the bottom of the vehicle body, the rail wheels are arranged at the bottom of the vehicle body in a retractable manner, and the steering driving structure is connected with the ground wheels to drive the ground wheels to steer; when the wheels of the rail are positioned on the rail and the direction of the wheels on the ground is a preset direction, the steering driving structure has a forbidden first state.

Further, the steering driving structure comprises a hydraulic pipeline and a valve arranged on the hydraulic pipeline, and the valve is closed so that the steering driving structure can not drive the ground wheels to steer.

Further, the dual-purpose tractor of public railway still includes detects the structure, detects the structure setting in the tractor main part to whether the direction that detects the ground wheel is in the direction of predetermineeing.

Further, the automobile body includes the axle fixing base, turns to the drive structure and includes the steering rocker, and detection structure includes proximity sensor and pick-up plate, and proximity sensor installs on the axle fixing base, and the pick-up plate is installed on the steering rocker, and proximity sensor judges through the position of measuring the pick-up plate whether ground wheel is in the preset direction.

Further, the detection structure also comprises a mounting seat, the mounting seat is detachably mounted on the axle fixing seat, and the proximity sensor is mounted on the mounting seat.

Further, the mounting seat is of a plate-shaped structure and comprises a first plate section, a second plate section and a third plate section, the first plate section and the second plate section are arranged in parallel, the third plate section is arranged between the first plate section and the second plate section, the plane of the third plate section is perpendicular to the plane of the first plate section, the first plate section is mounted on the axle fixing seat, and the proximity sensor is mounted on the second plate section.

Furthermore, a detection hole is formed in the detection plate, and when the detection hole corresponds to the proximity sensor, the ground wheels are in the preset direction.

Further, the detection structure further comprises an adjusting seat which is arranged between the detection plate and the steering rocker arm so as to adjust the distance between the proximity sensor and the detection plate.

Furthermore, a bolt hole is formed in the detection plate, and the detection plate and the adjusting seat are fixed to the steering rocker arm through bolts.

Further, the valve is an electromagnetic ball valve, and the electromagnetic ball valve is electrically connected with the detection structure.

By applying the technical scheme of the invention, when the dual-purpose tractor for the highway and the railway runs on the track, the track wheels are in contact with the track, and the ground wheels are also in contact with the track, wherein the contact between the ground wheels and the track provides power for the dual-purpose tractor for the highway and the railway, the dual-purpose tractor for the highway and the railway is realized through the track wheels when the direction is transferred, when the track wheels are positioned on the track and the direction of the ground wheels is a preset direction, the steering driving structure cannot drive the ground wheels to steer, namely the steering driving structure has a forbidden first state, so that the problem that the dual-purpose tractor for the highway and the railway derails can. The technical scheme of the invention effectively solves the problem that the dual-purpose tractor for the highway and the railway derails due to the steering of the ground wheels when the dual-purpose tractor for the highway and the railway in the prior art runs on the rails.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic perspective view of an embodiment of a highway-railway tractor according to the invention;

FIG. 2 is a schematic view of a steering driving structure of the tractor for highway and railway of FIG. 1;

FIG. 3 is a schematic diagram illustrating the operation of the steering driving structure of the tractor for highway and railway of FIG. 1;

FIG. 4 is a schematic view showing a cooperative arrangement of the proximity sensor and sensing plate of FIG. 1;

FIG. 5 shows a schematic view of another angle configuration of the proximity sensor and sensing plate of FIG. 4; and

fig. 6 shows a schematic structural view of the detection plate of fig. 5.

Wherein the figures include the following reference numerals:

10. a tractor body; 11. a vehicle body; 12. a ground wheel; 13. a rail wheel; 14. a steering drive structure; 141. a hydraulic line; 142. a valve; 20. detecting the structure; 21. a proximity sensor; 22. detecting a plate; 23. a mounting seat; 24. an adjusting seat.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

As shown in fig. 1 to 6, the tractor for both highway and railway of the present embodiment includes a tractor main body 10. The tractor body 10 comprises a vehicle body 11, ground wheels 12, rail wheels 13 and a steering driving structure 14, wherein the ground wheels 12 are arranged at the bottom of the vehicle body 11, the rail wheels 13 are retractably arranged at the bottom of the vehicle body 11, and the steering driving structure 14 is connected with the ground wheels 12 to drive the ground wheels 12 to steer. The steering driving mechanism 14 has a first disabled state when the rail wheel 13 is on the rail and the direction of the ground wheel 12 is a predetermined direction.

The technical scheme of this embodiment is used, when the dual-purpose tractor of public railway walked on the track, rail wheel 13 and track contact, ground wheel 12 also contacts with the track, wherein, ground wheel 12 and track contact provide power for the dual-purpose tractor of public railway, the dual-purpose tractor of public railway passes through rail wheel 13 when the direction of transfer realizes, when rail wheel 13 was located the track and when the direction of ground wheel 12 was for predetermineeing the direction, turn to the steering drive structure 14 and can not drive ground wheel 12 and turn to, turn to the first state that the steering drive structure 14 has the forbidden promptly, just so can avoid the dual-purpose tractor of public railway to appear the problem of derailing. The technical scheme of this embodiment has solved the dual-purpose tractor of public railway derailment problem that causes because the turning of ground wheel when the dual-purpose tractor of public railway walks on the rail among the prior art effectively.

As shown in fig. 2 and 3, in the solution of the present embodiment, the steering driving structure 14 includes a hydraulic line 141 and a valve 142 disposed on the hydraulic line 141, and the valve 142 is closed so that the steering driving structure 14 cannot drive the ground wheels 12 to steer. The provision of the valve 142 facilitates control of the steering drive structure 14. Specifically, the valve 142 is an electromagnetic ball valve, so that the degree of automation of the steering driving structure 14 is relatively high, for example, when the valve 142 needs to be closed, the electromagnetic ball valve can be opened or closed only by giving an electrical signal to the electromagnetic ball valve, that is, when the requirement that the rail wheel 13 is located on the rail and the direction of the ground wheel 12 is the preset direction is met, the electromagnetic ball valve is closed, the ground wheel 12 cannot be steered, the steering driving structure 14 has a forbidden first state, and when the requirement that the rail wheel 13 is located on the rail and the direction of the ground wheel 12 is the preset direction is not met at the same time, the steering driving structure 14 is a second state in which the steering driving structure can operate.

As shown in fig. 4 and 5, in the solution of the present embodiment, the tractor for both highway and railway further includes a detection structure 20, and the detection structure 20 is disposed on the tractor body 10 to detect whether the direction of the ground wheels 12 is in the preset direction. The arrangement of the detection structure 20 does not need to be manually observed for control, so that the judgment precision of the highway-railway dual-purpose tractor is improved.

As shown in fig. 4 and 5, in the present embodiment, the vehicle body 11 includes an axle holder, the steering driving structure 14 includes a steering rocker, the detecting structure 20 includes a proximity sensor 21 and a detecting plate 22, the proximity sensor 21 is mounted on the axle holder, the detecting plate 22 is mounted on the steering rocker, and the proximity sensor 21 determines whether the ground wheels 12 are in the preset direction by measuring the position of the detecting plate 22. The structure has lower manufacturing cost and higher detection reliability. During operation, proximity sensor 21 installs on the axle fixing base, and pick-up plate 22 installs on the steering rocker arm, and proximity sensor 21 is motionless like this, and pick-up plate 22 can move, and after proximity sensor 21 and pick-up plate 22 relative position corresponded well, ground wheel 12 just corresponded and predetermine the direction, for example, predetermine the direction and be the direction that highway railway tractor walked forward.

As shown in fig. 4 and 5, in the solution of the present embodiment, the detecting structure 20 further includes a mounting seat 23, the mounting seat 23 is detachably mounted on the axle fixing seat, and the proximity sensor 21 is mounted on the mounting seat 23. The installation of the mounting seat 23 makes the installation position of the proximity sensor 21 convenient. Specifically, the mounting seat 23 is a plate-shaped structure, the mounting seat 23 includes a first plate section, a second plate section and a third plate section, the first plate section and the second plate section are arranged in parallel, the third plate section is arranged between the first plate section and the second plate section, the plane of the third plate section is perpendicular to the plane of the first plate section, the first plate section is mounted on the axle fixing seat, and the proximity sensor 21 is mounted on the second plate section. The structure has lower processing cost and is convenient to be matched with the detection plate 22.

As shown in fig. 4 to 6, in the solution of the present embodiment, the detection plate 22 is provided with a detection hole, and when the detection hole corresponds to the proximity sensor 21, the ground wheel 12 is in a preset direction. The structure has lower processing cost. Specifically, the proximity sensor (detection switch) is located at a detection distance of 4mm from the detection plate 22, and the detection plate 22 is provided with a detection hole of 10 mm. And when the detection hole on the rotating detection plate 22 is superposed with the axial center of the detection switch, the steering of the road-railway dual-purpose tractor is centered. The detected centering signal is transmitted to the controller. At the moment, if the highway and railway dual-purpose tractor is in a railway traction operation working condition, the electromagnetic ball valve is controlled by the controller to lock the steering oil cylinder, and the steering drive axle is locked in a centering way. After the steering drive axle is locked in the middle, only power can be transmitted, and steering cannot be performed. The running safety of the highway and railway dual-purpose tractor is ensured. If the tractor for highway and railway is in the working condition of highway operation, the steering driving structure 14 is not locked.

As shown in fig. 4 and 5, in the solution of the present embodiment, the detecting structure 20 further includes an adjusting seat 24, and the adjusting seat 24 is installed between the detecting plate 22 and the pitman arm to adjust the distance between the proximity sensor 21 and the detecting plate 22. The provision of the adjustment seat 24 facilitates adjustment of the distance between the proximity sensor 21 and the detection plate 22.

As shown in fig. 4 and 5, in the solution of the present embodiment, a bolt hole is provided on the detection plate 22, and the detection plate 22 and the adjustment seat 24 are fixed to the pitman arm by bolts. The structure is convenient to disassemble and assemble and low in manufacturing cost.

As shown in fig. 3, in the technical solution of this embodiment, the valve 142 is an electromagnetic ball valve, and the electromagnetic ball valve is electrically connected to the detection structure 20. The structure realizes the automatic control of the highway and railway dual-purpose tractor, namely the opening and closing of the electromagnetic ball valve can be controlled by signals.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A highway-railway dual-purpose tractor is characterized by comprising:

the tractor comprises a tractor body (10), wherein the tractor body (10) comprises a vehicle body (11), ground wheels (12), rail wheels (13) and a steering driving structure (14), the ground wheels (12) are arranged at the bottom of the vehicle body (11), the rail wheels (13) are arranged at the bottom of the vehicle body (11) in a retractable manner, and the steering driving structure (14) is connected with the ground wheels (12) to drive the ground wheels (12) to steer;

when the rail wheels (13) are positioned on the rail and the direction of the ground wheels (12) is a preset direction, the steering driving structure (14) has a first state of forbidding;

the tractor for the highway and railway comprises a tractor body (10), and a detection structure (20), wherein the detection structure (20) is arranged on the tractor body (10) to detect whether the direction of the ground wheels (12) is in a preset direction or not;

the vehicle body (11) comprises an axle fixing seat, the steering driving structure (14) comprises a steering rocker arm, the detection structure (20) comprises a proximity sensor (21) and a detection plate (22), the proximity sensor (21) is installed on the axle fixing seat, the detection plate (22) is installed on the steering rocker arm, and the proximity sensor (21) judges whether the ground wheels (12) are in a preset direction or not by measuring the position of the detection plate (22).

2. The tractor as claimed in claim 1, wherein the steering drive structure (14) comprises a hydraulic line (141) and a valve (142) disposed on the hydraulic line (141), the valve (142) being closed such that the steering drive structure (14) cannot drive the ground wheels (12) to steer.

3. The tractor as claimed in claim 2, wherein the detection structure (20) further comprises a mounting seat (23), the mounting seat (23) being removably mounted on the axle fixing seat, the proximity sensor (21) being mounted on the mounting seat (23).

4. The tractor as claimed in claim 3, wherein the mounting seat (23) is a plate-shaped structure, the mounting seat (23) comprises a first plate section, a second plate section and a third plate section, the first plate section and the second plate section are arranged in parallel, the third plate section is arranged between the first plate section and the second plate section, the plane of the third plate section is perpendicular to the plane of the first plate section, the first plate section is mounted on the axle fixing seat, and the proximity sensor (21) is mounted on the second plate section.

5. The tractor as claimed in claim 1, wherein the detection plate (22) is provided with a detection hole, and when the detection hole corresponds to the proximity sensor (21), the ground wheels (12) are in the preset direction.

6. The tractor as claimed in claim 5, wherein the sensing structure (20) further comprises an adjustment seat (24), the adjustment seat (24) being mounted between the sensing plate (22) and the pitman arm to adjust the distance between the proximity sensor (21) and the sensing plate (22).

7. The tractor as claimed in claim 6, wherein the detection plate (22) is provided with bolt holes, and the detection plate (22) and the adjusting seat (24) are fixed on the steering rocker arm through bolts.

8. The tractor as claimed in claim 2, wherein the valve (142) is an electromagnetic ball valve electrically connected to the detection structure (20).