A rail-wheel system and a road-rail dual-purpose vehicle

Abstract

The present invention relates to a rail wheel system and a road-rail dual-purpose vehicle, wherein the rail wheel system includes a guide rail seat, a fixing structure, an adjustment structure, and a driving structure; two driving arms are provided on the guide rail seat, each driving arm is provided with a rail wheel, and each driving arm is movably arranged in a direction close to and away from the other driving arm; the fixing structure includes a fixing plate and a connecting arm, one end of the connecting arm is movably arranged on the fixing plate, and the other end is connected to the guide rail seat; the adjustment structure includes a first adjustment part provided on the guide rail seat, and a second adjustment part provided on the fixing plate, the first adjustment part is drive-connected to each driving arm, and the second adjustment part is drive-connected to the connecting arm, so as to drive the connecting arm to move; the driving structure includes two driving parts provided in a one-to-one correspondence with the two rail wheels, each driving part is drive-connected to the corresponding rail wheel, so as to drive the rail wheel to rotate. This solution can make the road-rail dual-purpose vehicle suitable for rails of different spacings, making its use more flexible and improving practicality.

Description

Technical Field

[0001] This invention relates to the field of urban rail transit emergency rescue dual-purpose road-rail transportation equipment technology, and in particular to a road-rail wheel system and a dual-purpose road-rail vehicle. Background Technology

[0002] A road-rail dual-purpose vehicle is a special vehicle that can run on both railway tracks and ordinary roads, even in the field. In modern times, it mainly undertakes emergency tasks such as maintenance and rescue along railway lines. Road-rail dual-purpose vehicles are required to be able to quickly and easily switch between road and rail operations. Existing road-rail dual-purpose vehicles typically achieve this through a hydraulic track-switching device on the chassis and a rail-guided wheel system that can be raised and lowered at any time. With the guide wheel system, ordinary rubber-tire wheels can travel straight along the rails.

[0003] For example, patent CN 112356627 A discloses a dual-purpose road-rail transport vehicle, whose chassis is equipped with two sets of running mechanisms: rubber-tired and rail-wheeled. It travels on rubber-tired roads and on rail-wheeled railways, featuring a simple structure, high maneuverability, and reliable safety. However, because the distance between the rail wheels is not adjustable, it cannot be used on tracks with varying track spacing, significantly limiting the vehicle's usability. Summary of the Invention

[0004] In view of this, it is necessary to provide a rail-wheel system and a road-rail dual-purpose vehicle to solve the technical problem that the distance between the rail wheels in the existing technology cannot be adjusted, making it unsuitable for tracks with different track spacing, which greatly limits the use of road-rail dual-purpose vehicles.

[0005] This invention provides a rail wheel system, which includes:

[0006] A guide rail base is provided with two drive arms, each drive arm is provided with a rail wheel, and each drive arm is movably arranged in the direction of approaching and moving away from the other drive arm, so that the distance between the two rail wheels is adjustable;

[0007] A fixed structure includes a fixed plate and a connecting arm. The fixed plate is used to fix the structure to the vehicle body. One end of the connecting arm is movably disposed on the fixed plate and the other end is connected to the guide rail seat so as to drive the guide rail seat to rise and fall during movement.

[0008] The adjustment structure includes a first adjustment part disposed on the guide rail seat and a second adjustment part disposed on the fixed plate. The first adjustment part is drivenly connected to each of the drive arms to drive the drive arms to move. The second adjustment part is drivenly connected to the connecting arm to drive the connecting arm to move.

[0009] The drive structure includes two drive units that are arranged one-to-one with the two track wheels. Each drive unit is driven to drive the corresponding track wheel to rotate.

[0010] Optionally, the two drive arms are spaced apart along their width direction, wherein each drive arm is movable along its length direction and has a rack on the side closer to the other drive arm;

[0011] The first adjustment part is a first adjustment motor disposed on the guide rail seat and located between the two racks. The output shaft of the first adjustment motor is provided with an adjustment gear, which is connected to the two racks for driving each of the drive arms to move.

[0012] Optionally, the first adjustment part further includes two driven gears that are arranged in a one-to-one correspondence with the two racks, and each driven gear meshes with the corresponding rack;

[0013] The adjusting gear is located between the two driven gears and meshes with each of the driven gears.

[0014] Optionally, each of the rail wheels is located at one end of the corresponding drive arm in its length direction, and the two rail wheels are arranged far apart from each other.

[0015] Optionally, one end of each drive arm with the rail wheel is a mounting end, wherein the mounting end of each drive arm is bent toward the other drive arm.

[0016] Optionally, the guide rail base includes a base plate and a housing. The base plate and the housing together form a receiving cavity. The receiving cavity is open at both ends in the length direction of the drive arm. The housing has a limiting part protruding towards the base plate. The limiting part is located between the two drive arms and forms guide channels between the limiting part and the two inner sidewalls of the housing.

[0017] The two drive arms are located in the accommodating cavity and are respectively arranged in one-to-one correspondence with the two guide channels. Each drive arm is movably disposed in the corresponding guide channel along its length direction.

[0018] The adjusting gear is located in the accommodating cavity, and the connecting arm is connected to the housing.

[0019] Optionally, the limiting portion is a limiting frame protruding from the inner wall of the housing, and the housing has an opening corresponding to the limiting frame, the opening communicating with the receiving cavity; and / or,

[0020] The limiting part is provided in multiple ways, and the multiple limiting parts are spaced apart along the length direction of the drive arm.

[0021] Optionally, the fixing plate is located between the two rail wheels, and one end of the connecting arm is rotatably mounted on the fixing plate about an axis in the horizontal direction, while the other end is connected to the guide rail seat, so as to drive the guide rail seat to rise and fall when rotating;

[0022] The second adjustment part is a second adjustment motor provided on the fixed plate. The second adjustment motor is driven to the connecting arm to drive the connecting arm to rotate.

[0023] Optionally, the drive unit is a hub motor disposed between the corresponding track wheel and its axle; and / or,

[0024] The connecting arms are spaced in multiples.

[0025] In addition, the present invention also provides a road-rail dual-purpose vehicle, which includes the rail wheel system as described in any of the above claims.

[0026] Compared to existing technologies, the rail wheel system provided by this invention can be mounted on the vehicle body via a fixing plate. When the dual-purpose road-rail vehicle needs to travel on a highway, the connecting arm moves accordingly to raise the guide rail seat, causing the rail wheels to lift off the ground, allowing the dual-purpose road-rail vehicle to travel on the highway using its tires. When the dual-purpose road-rail vehicle needs to travel on a track, the connecting arm moves in the opposite direction to lower the guide rail seat, causing the rail wheels to contact the track. When the distance between the track rails matches the distance between the tires, the dual-purpose road-rail vehicle can be driven by the tires or the drive unit. When the distance between the track rails changes, the first adjustment unit drives the two drive arms to adjust the distance between the two rail wheels to suit different track spacings. At this time, the drive unit drives the rail wheels to rotate, thereby driving the dual-purpose road-rail vehicle. Thus, this solution allows the dual-purpose road-rail vehicle to be adapted to track spacings of different sizes, making its use more flexible and improving its practicality.

[0027] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it according to the contents of the specification, the preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings. Specific embodiments of the present invention are given in detail in the following embodiments and their accompanying drawings. Attached Figure Description

[0028] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0029] Figure 1 This is a schematic diagram of a structure of an embodiment of the rail wheel system provided by the present invention;

[0030] Figure 2 for Figure 1Schematic diagram of the drive arm, the first adjustment part and the drive structure;

[0031] Figure 3 for Figure 1 A schematic diagram of the structure of the drive arm mounted on the guide rail base (base plate not shown);

[0032] Figure 4 for Figure 1 Another structural diagram of the central track wheel system;

[0033] Figure 5 for Figure 3 A schematic diagram of the structure of the middle drive arm and the first adjustment part;

[0034] Figure 6 for Figure 4 Schematic diagram of the middle guide rail base;

[0035] Figure 7 for Figure 6 A cross-sectional schematic diagram of the center guide rail seat;

[0036] Figure 8 for Figure 6 Schematic diagram of the middle shell structure;

[0037] Figure 9 This is a schematic diagram of the structure of an embodiment of the dual-purpose road-rail vehicle provided by the present invention.

[0038] Explanation of reference numerals in the attached figures:

[0039] 100-Rail wheel system, 1-Guide rail seat, 11-Base plate, 12-Shell, 12a-Opening, 1a-Accommodation cavity, 1b-Guide channel, 13-Limiting part, 131-Limiting frame, 2-Drive arm, 21-Rack, 22-Mounting end, 3-Rail wheel, 4-Fixing structure, 41-Fixing plate, 42-Connecting arm, 5-Adjustment structure, 51-First adjustment part, 511-First adjustment motor, 512-Adjustment gear, 513-Driven gear, 52-Second adjustment part, 521-Second adjustment motor, 6-Drive structure, 61-Drive part, 611-Hub motor, 200-Road-rail dual-purpose vehicle, 210-Car body, 220-Tire. Detailed Implementation

[0040] Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which form part of this application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention.

[0041] See Figures 1 to 5This rail-wheel system 100 is used in a dual-purpose road-rail vehicle 200. It includes a guide rail base 1, a fixing structure 4, an adjustment structure 5, and a drive structure 6. The guide rail base 1 has two drive arms 2, each with a rail wheel 3. Each drive arm 2 is movably positioned in a direction approaching and moving away from the other drive arm 2, allowing the distance between the two rail wheels 3 to be adjustable. The fixing structure 4 includes a fixing plate 41 and a connecting arm 42. The fixing plate 41 is fixed to the vehicle body 210, and one end of the connecting arm 42 is movably mounted on the fixing plate 41, while the other end is connected to... The guide rail seat 1 is used to move the guide rail seat 1 up and down during movement; the adjustment structure 5 includes a first adjustment part 51 provided on the guide rail seat 1 and a second adjustment part 52 provided on the fixed plate 41. The first adjustment part 51 is driven connected to each drive arm 2 to drive each drive arm 2 to move. The second adjustment part 52 is driven connected to the connecting arm 42 to drive the connecting arm 42 to move. The drive structure 6 includes two drive parts 61 that are provided one-to-one with the two track wheels 3. Each drive part 61 is driven connected to the corresponding track wheel 3 to drive the track wheel 3 to rotate.

[0042] The rail wheel system 100 provided by this invention can be installed on the vehicle body 210 via a fixing plate 41. When the dual-purpose rail-road vehicle 200 needs to travel on a highway, the connecting arm 42 moves accordingly to lift the guide rail seat 1, causing the rail wheel 3 to lift off the ground, so that the dual-purpose rail-road vehicle 200 can travel on the highway using the tires 220. When the dual-purpose rail-road vehicle 200 needs to travel on a track, the connecting arm 42 moves in the opposite direction to lower the guide rail seat 1, so that the rail wheel 3 contacts the track. When the distance between the tracks is exactly matched with the distance between the tires 220, the dual-purpose rail-road vehicle 200 can be driven to move by the tires 220 or the drive unit 61. When the distance between the tracks changes, the first adjustment unit 51 drives the two drive arms 2 to move to adjust the distance between the two rail wheels 3 to suit tracks with different distances. At this time, the drive unit 61 drives the rail wheels 3 to rotate, thereby driving the dual-purpose rail-road vehicle 200 to move. Thus, this solution enables the 200 dual-purpose road-rail vehicle to be used on tracks with different spacing, making its use more flexible and improving its practicality.

[0043] Furthermore, the two drive arms 2 are spaced apart along their width direction. Each drive arm 2 is movable along its length direction and has a rack 21 on its side closest to the other drive arm 2. The first adjustment part 51 is a first adjustment motor 511 located on the guide rail seat 1 and between the two racks 21. The output shaft of the first adjustment motor 511 has an adjustment gear 512, which is connected to the two racks 21 to drive the movement of each drive arm 2. In this design, the first adjustment motor 511 drives the adjustment gear 512 to rotate, thereby rotating the two racks 21 and causing the two drive arms 2 to move closer or further apart, thus adjusting the distance between the two track wheels 3. The structure is stable and reliable. Furthermore, placing the adjustment gear 512 between the two drive arms 2 makes the overall structure more compact.

[0044] It should be understood that, in this embodiment, the two racks 21 extend along the length direction of the drive arm 2. Furthermore, it should be noted that, in the example drawings, the width and length directions of the drive arm 2 are shown as F1 and F2, respectively.

[0045] Furthermore, the first adjustment part 51 also includes two driven gears 513 corresponding to the two racks 21, each driven gear 513 meshing with its corresponding rack 21; an adjustment gear 512 is located between the two driven gears 513 and meshes with each driven gear 513. In this embodiment, the two driven gears 513 drive the corresponding racks 21 to move. Specifically, the outer diameter of the driven gear 513 is larger than the outer diameter of the adjustment gear 512, so that the movement of the drive arm 2 is more stable.

[0046] Furthermore, each rail wheel 3 is located at one end of the corresponding drive arm 2 along its length, and the two rail wheels 3 are positioned far apart from each other. That is, in this design, the two rail wheels 3 are arranged opposite each other to increase the span between them. Specifically, one end of each drive arm 2 with a rail wheel 3 is a mounting end 22, wherein the mounting end 22 of each drive arm 2 is bent toward the other drive arm 2. In this way, while improving the stability of the drive arm 2's movement, it ensures that the two rail wheels 3 are located on the same axis, making the movement of the dual-purpose road-rail vehicle 200 more stable, and also making the structure of the rail wheel system 100 more compact.

[0047] Further, please refer to Figures 6 to 8The guide rail base 1 includes a base plate 11 and a housing 12. The base plate 11 and the housing 12 together form a receiving cavity 1a. The receiving cavity 1a is open at both ends along the length of the drive arm 2. The housing 12 has a limiting part 13 protruding towards the base plate 11. The limiting part 13 is located between the two drive arms 2 and forms guide channels 1b between the limiting part 13 and the two inner sidewalls of the housing 12. The two drive arms 2 are located in the receiving cavity 1a and are correspondingly arranged with the two guide channels 1b. Each drive arm 2 is movably disposed in the corresponding guide channel 1b along its length. The adjusting gear 512 is located in the receiving cavity 1a, and the connecting arm 42 is connected to the housing 12. That is, in this embodiment, the drive arm 2 and the adjusting gear 512 are disposed in the receiving cavity 1a to prevent interference from external foreign objects in the transmission between them. At the same time, the guide channels 1b guide the drive arm 2 and improve the stability of the drive arm 2's movement.

[0048] Furthermore, the limiting part 13 is a limiting frame 131 protruding from the inner wall of the housing 12. The housing 12 has an opening 12a corresponding to the limiting frame 131, and the opening 12a communicates with the receiving cavity 1a. In this design, the limiting frame 131 can improve the strength of the guide rail seat 1, while the opening 12a facilitates the injection of lubricating oil from the outside into the receiving cavity 1a, thus lubricating the rack 21 of the adjusting gear 512. Specifically, in one embodiment, to facilitate the rapid flow of lubricating oil to the adjusting gear 512 within the receiving cavity 1a, the limiting frame 131 is open on the side near the adjusting gear 512. In addition, multiple limiting parts 13 are provided, and the multiple limiting parts 13 are spaced apart along the length direction of the drive arm 2, so as to further guide the drive arm 2 by providing multiple limiting parts 13. Specifically, in this embodiment, two limiting parts 13 are spaced apart along the length direction of the drive arm 2.

[0049] Furthermore, the fixed plate 41 is located between the two track wheels 3, and one end of the connecting arm 42 is rotatably mounted on the fixed plate 41 about an axis in the horizontal direction, while the other end is connected to the guide rail seat 1, so as to drive the guide rail seat 1 to rise and fall when rotating; the second adjustment part 52 is a second adjustment motor 521 mounted on the fixed plate 41, and the second adjustment motor 521 is drivenly connected to the connecting arm 42 to drive the connecting arm 42 to rotate. In this solution, the connecting arm 42 is rotatably mounted on the fixed plate 41 to convert its rotation into the rising and falling of the guide rail seat 1, so as to make the overall structure more compact and reduce the space required for the rising and falling of the guide rail seat 1. In this embodiment, the connecting arm 42 is rotatably mounted about an axis in the length direction of the driving arm 2. In addition, multiple connecting arms 42 are spaced apart, specifically, two connecting arms 42 are spaced apart along the length direction of the driving arm 2.

[0050] Furthermore, the drive unit 61 is a hub motor 611 located between the corresponding rail wheel 3 and its shaft. In this embodiment, the rail wheel 3 and the corresponding drive arm 2 are connected by a shaft, and a hub motor 611 is provided between the rail wheel 3 and the corresponding shaft to drive the rail wheel 3 to rotate, thereby ensuring that the dual-purpose road-rail vehicle 200 has driving force even when the track spacing is different. It should be noted that the hub motor 611 is prior art and will not be described in detail here. In addition, in this embodiment, the rail wheel 3 is coated with rubber to provide insulation, shock absorption, and wear resistance. Furthermore, the wheel surface of the rail wheel 3 has a special tread surface curve, which facilitates automatic turning when traveling on the track.

[0051] In addition, please see Figure 9 The present invention also provides a dual-purpose road-rail vehicle 200, which includes the rail wheel system 100 as described in any of the above claims. It should be noted that the detailed structure of the rail wheel system 100 of the dual-purpose road-rail vehicle 200 can be referred to the embodiments of the rail wheel system 100 described above, and will not be repeated here. Since the rail wheel system 100 described above is used in the dual-purpose road-rail vehicle 200 of the present invention, the embodiments of the dual-purpose road-rail vehicle 200 of the present invention include all the technical solutions of all the embodiments of the rail wheel system 100 described above, and the achieved technical effects are also completely the same, and will not be repeated here.

[0052] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. A rail-wheel system for use in dual-purpose road and rail vehicles, characterized in that, It includes: A guide rail base is provided with two drive arms, each drive arm is provided with a rail wheel, and each drive arm is movably arranged in the direction of approaching and moving away from the other drive arm, so that the distance between the two rail wheels is adjustable; A fixed structure includes a fixed plate and a connecting arm. The fixed plate is used to fix the structure to the vehicle body. One end of the connecting arm is movably disposed on the fixed plate and the other end is connected to the guide rail seat so as to drive the guide rail seat to rise and fall during movement. The adjustment structure includes a first adjustment part disposed on the guide rail seat and a second adjustment part disposed on the fixed plate. The first adjustment part is drivenly connected to each of the drive arms to drive each of the drive arms to move. The second adjustment part is drivenly connected to the connecting arm to drive the connecting arm to move. as well as, The drive structure includes two drive units that are arranged one-to-one with the two rail wheels, and each drive unit is driven to drive the corresponding rail wheel to rotate. The two drive arms are spaced apart along their width direction, and each drive arm is movable along its length direction and has a rack on the side closer to the other drive arm. The first adjustment part is a first adjustment motor disposed on the guide rail seat and located between the two racks. The output shaft of the first adjustment motor is provided with an adjustment gear, which is connected to the two racks for driving each of the drive arms to move.

2. The rail wheel system according to claim 1, characterized in that, The first adjustment part further includes two driven gears that are arranged in a one-to-one correspondence with the two racks, and each driven gear meshes with the corresponding rack; The adjusting gear is located between the two driven gears and meshes with each of the driven gears.

3. The rail wheel system according to claim 1, characterized in that, Each of the rail wheels is located at one end of the corresponding drive arm in its length direction, and the two rail wheels are positioned far apart from each other.

4. The rail wheel system according to claim 3, characterized in that, Each of the drive arms has a mounting end with the track wheel at one end, wherein the mounting end of each drive arm is bent toward the other drive arm.

5. The rail wheel system according to claim 1, characterized in that, The guide rail base includes a base plate and a housing. The base plate and the housing together form a receiving cavity. The receiving cavity is open at both ends in the length direction of the drive arm. The housing has a limiting part protruding towards the base plate. The limiting part is located between the two drive arms and forms guide channels between the limiting part and the two inner side walls of the housing. The two drive arms are located in the accommodating cavity and are respectively arranged in one-to-one correspondence with the two guide channels. Each drive arm is movably disposed in the corresponding guide channel along its length direction. The adjusting gear is located in the accommodating cavity, and the connecting arm is connected to the housing.

6. The rail wheel system according to claim 5, characterized in that, The limiting part is a limiting frame protruding from the inner wall of the housing, and the housing has an opening corresponding to the limiting frame, the opening communicating with the receiving cavity; and / or, The limiting part is provided in multiple ways, and the multiple limiting parts are spaced apart along the length direction of the drive arm.

7. The rail wheel system according to claim 1, characterized in that, The fixed plate is located between the two rail wheels, and one end of the connecting arm is rotatably mounted on the fixed plate about an axis in the horizontal direction, while the other end is connected to the guide rail seat so as to drive the guide rail seat to rise and fall when rotating. The second adjustment part is a second adjustment motor provided on the fixed plate. The second adjustment motor is driven to the connecting arm to drive the connecting arm to rotate.

8. The rail wheel system according to any one of claims 1 to 7, characterized in that, The drive unit is a hub motor located between the corresponding track wheel and its axle; and / or... The connecting arms are spaced in multiples.

9. A dual-purpose road-rail vehicle, characterized in that, It includes the rail wheel system as described in any one of claims 1 to 8.

Images