Drive and guide mechanism of road-rail vehicles

Abstract

The present invention proposes a driving and guiding mechanism for a road-rail vehicle, which belongs to the technical field of road-rail vehicles. The purpose is to solve the problems of a single driving force source of existing road-rail vehicles, the inability to further improve the traction capacity of the railway, and the waste of power of the front rubber wheel. The technical solution is as follows: it includes a guide steel wheel, a slewing bracket and a guide oil cylinder, one end of the guide oil cylinder is connected to the slewing bracket, and the other end is connected to the chassis of the road-rail vehicle. The end of the slewing bracket away from the guide oil cylinder is hinged to the chassis, the rotating shaft of the guide steel wheel is connected to the slewing bracket, a first rotating shaft is provided on the slewing bracket, and a friction wheel is provided on the first rotating shaft for contacting with the front rubber wheel. The first rotating shaft is connected to the rotating shaft of the guide steel wheel through a transmission device. The technical effect is that the power of the front rubber wheel is reasonably utilized, the driving force source is enriched, the traction capacity of the railway is improved, and the braking distance of the railway is shortened.

Description

Technical Field

[0001] The invention belongs to the technical field of road-rail vehicles, and in particular relates to a driving and guiding mechanism of a road-rail vehicle. Background Art

[0002] Existing road-rail vehicles can be divided into two types according to the driving mode: rubber-wheel drive and steel-wheel drive. Rubber-wheel drive utilizes the drive system of the original chassis, with the rear rubber wheel as the active wheel, the guide steel wheel as the passive wheel, and the front rubber wheel lifted up and idling. This type of road-rail vehicle has the advantages of low manufacturing and maintenance costs and strong power, and is currently widely used in this field. However, there are problems such as severe wear of the rear rubber wheel, complex load distribution, easy derailment, and power waste of the front rubber wheel; steel-wheel drive is that the rubber wheel is lifted up and does not participate in railway operations, and the guide steel wheel is the active wheel. An independent drive device is required to drive the guide steel wheel, which is similar to a railway locomotive and has the characteristics of flexibility, high speed, and wear resistance. However, due to the small adhesion coefficient between the steel wheel and the rail, the traction is limited. Summary of the Invention

[0003] The present invention overcomes the shortcomings of the existing technology and proposes a driving and guiding mechanism for a road-rail dual-purpose vehicle, the purpose of which is to solve the problems of the existing road-rail dual-purpose vehicle having a single driving force source, unable to further improve the railway traction capacity, and wasted power of the front rubber wheel.

[0004] In order to achieve the above object, the present invention is implemented through the following technical solutions.

[0005] The driving guide mechanism of the road-rail dual-use vehicle includes a guide steel wheel, a slewing bracket and a guide oil cylinder.

[0006] One end of the slewing bracket is connected to the slewing bracket, and the other end is connected to the chassis of the road-rail vehicle. The end of the slewing bracket away from the guide cylinder is hinged to the chassis. The rotating shaft of the guide steel wheel is connected to the slewing bracket. The driving guide mechanism also includes a first rotating shaft connected to the slewing bracket. A friction wheel is provided on the first rotating shaft for friction transmission with the front rubber wheel of the road-rail vehicle. The first rotating shaft is connected to the rotating shaft of the guide steel wheel through a transmission device.

[0007] Furthermore, the transmission device is a gear transmission device, a belt transmission device or a chain transmission device.

[0008] Furthermore, the transmission device includes a first gear and a second gear meshing with the first gear, the first rotating shaft is connected to the first gear, the second gear is connected to the rotating shaft of the guide steel wheel, the first gear and the second gear are arranged in a gear box, and the gear box is connected to the rotating bracket through a bracket.

[0009] Furthermore, a cylinder mounting seat is provided at one end of the guide cylinder away from the slewing bracket, the cylinder mounting seat is connected to the front crossbeam of the chassis, and the end of the slewing bracket away from the guide cylinder is hinged to the rear connecting seat of the chassis.

[0010] Furthermore, a track sweeper is provided at the front end of the guide steel wheel for cleaning debris on the rails, and the track sweeper is connected to the slewing bracket.

[0011] Furthermore, the track sweeper includes a flat plate and a brush arranged below the flat plate.

[0012] Compared with the prior art, the present invention has the following beneficial effects: the present invention transmits the power of the front rubber wheel to the guide steel wheel, which not only reasonably utilizes the power of the front rubber wheel, avoids power waste, and maximizes the use of the original chassis power, but also enriches the driving force source of the road-rail dual-purpose vehicle, and adopts a mixed drive mode of the guide steel wheel and the rear rubber wheel to realize railway traction operation; the guide steel wheel of the present invention serves as a driving wheel, which increases the traction capacity of the railway by about 20% and shortens the railway braking distance. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The present invention will be further described below in conjunction with the accompanying drawings;

[0014] Figure 1 It is a front view schematic diagram of the present invention during road operation and railway operation;

[0015] Figure 2 It is a side view schematic diagram of the present invention;

[0016] Figure 3 for Figure 1 AA cross-sectional diagram;

[0017] Figure 4 for Figure 1 BB cross-sectional diagram;

[0018] Figure 5 for Figure 1 Schematic diagram of CC cross section;

[0019] Figure 6 This is a schematic diagram of the structure of the present invention during highway operation;

[0020] Figure 7 This is a schematic diagram of the structure of the present invention during railway operation;

[0021] Among them, 1 is the chassis longitudinal beam, 2 is the rear connecting seat, 3 is the front cross beam, 4 is the guide cylinder, 5 is the connecting rod, 6 is the transmission device, 7 is the front rubber wheel, 8 is the rocker arm, 9 is the track sweeper, 10 is the guide steel wheel, 11 is the inner vertical plate, 12 is the outer vertical plate, 13 is the first rotating shaft, 14 is the second rotating shaft, 15 is the friction wheel, 16 is the first gear, 17 is the second gear, 18 is the gear box, 19 is the bearing, 20 is the pin shaft, 21 is the composite bearing, 22 is the adjusting washer, 23 is the locking plate, 24 is the spacer, and 25 is the ear plate. DETAILED DESCRIPTION

[0022] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail in conjunction with the embodiments and drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention. The technical solutions of the present invention are described in detail below in conjunction with the embodiments and drawings, but the scope of protection is not limited thereto.

[0023] like Figure 1-3 As shown, a front crossbeam 3 and a rear connecting seat 2 are provided on the chassis longitudinal beam 1 of the road-rail dual-use vehicle. The driving guide mechanism of the road-rail dual-use vehicle of the present invention includes a guide steel wheel 10, a slewing bracket and a guide oil cylinder 4. The slewing bracket includes a connecting rod 5, a rocker arm 8, an inner vertical plate 11 and an outer vertical plate 12. The rocker arm 8 is sleeved on the connecting rod 5 and can slide on the connecting rod 5. Figure 4 As shown, one end of the rocker arm 8 is hinged to the rear connecting seat 2 through a pin 20. A locking piece 23 is provided on the pin 20 to prevent the pin from falling off. The outer side of the pin 20 is connected to the rocker arm 8 through a composite bearing 21. An adjusting washer 22 is provided between the rear connecting seat 2 and the rocker arm 8. The other end of the rocker arm 8 is provided with an ear plate 25. Figure 5 As shown, the ear plate 25 is hinged to the lower end of the guide cylinder 4 through a second pin shaft, and the second pin shaft is provided with a locking piece 23 for preventing the pin shaft from falling off. A spacer 24 is provided between the second pin shaft and the lower end of the guide cylinder 4, and a cylinder mounting seat is provided at the upper end of the guide cylinder 4. The cylinder mounting seat is connected to the front crossbeam 3 of the chassis by bolts. The outer end of the connecting rod 5 is connected to the rotating shaft of the guide steel wheel 10 through the inner vertical plate 11 and the outer vertical plate 12. The guide steel wheel 10 is arranged in the middle position between the inner vertical plate 11 and the outer vertical plate 12. A track sweeper 9 is provided at the front end of the guide steel wheel 10. The track sweeper 9 includes a flat plate and a brush arranged under the flat plate. The track sweeper 9 is welded to the inner vertical plate 11 and the outer vertical plate 12. The track sweeper 9 is used to clean debris on the rails to ensure the normal operation of the railway.

[0024] A first rotating shaft 13 is provided on the outer side of the outer vertical plate 12, and a friction wheel 15 is provided on the first rotating shaft 13 for friction transmission with the front rubber wheel 7 of the road-rail dual-use vehicle. The first rotating shaft 13 is connected to the rotating shaft of the guide steel wheel 10 through a transmission device 6. The transmission device 6 includes a first gear 16 and a second gear 17 meshing with the first gear 16. The first rotating shaft 13 is connected to the first gear 16. A second rotating shaft 14 is provided in the middle of the second gear 17. The second rotating shaft 14 is connected to the rotating shaft of the guide steel wheel 10 through a coupling. The first gear 16 and the second gear 17 are arranged in a gear box 18, and the gear box 18 is connected to the outer vertical plate 12 through a bracket. The first gear 16 is a small gear, and the second gear 17 is a large gear. The first rotating shaft 13 and the second rotating shaft 14 are both connected to the outer vertical plate 12 through a bearing 19 at one end, and connected to the gear box 18 through a bearing at the other end.

[0025] The working process is as follows: Figure 6 As shown, during road operation, the guide cylinder 4 is retracted, and the guide cylinder 4 drives the swing rod 8 to rotate around the pin shaft. At the same time, the swing rod 8 slides inward along the connecting rod 5, driving the connecting rod 5 to complete the upward swing action, and the transmission device 6 and the guide steel wheel 10 are lifted, thereby realizing the separation of the friction wheel 15 and the front rubber wheel 7. The front rubber wheel 7 and the rear rubber wheel are in contact with the ground, completing the operation content in the road mode; Figure 7 As shown, during railway operation, the front rubber wheel 7 is lifted and leaves the rail surface, the guide cylinder 4 extends, and the guide cylinder 4 drives the rocker arm 8 to rotate around the pin shaft. At the same time, the rocker arm 8 slides outward along the connecting rod 5, driving the connecting rod 5 to complete the downward swing action, thereby achieving contact between the friction wheel 15 and the front rubber wheel 7. During this process, the guide cylinder 4 extends the full stroke until the friction wheel 15 contacts the front rubber wheel 7 and maintains a certain pressure. When the rubber wheel has power, it will drive the friction wheel 15 to rotate through friction transmission. At this time, the friction wheel 15 transmits power to the first gear 16 in the gear box 18 through the transmission of the first rotating shaft 13. The first gear 16 drives the second gear 17 to rotate by meshing with the second gear 17. The second gear 17 transmits power to the guide steel wheel 10 through the second rotating shaft 14.

[0026] The present invention transmits the power of the front rubber wheel 7 to the guide steel wheel 10, which not only reasonably utilizes the power of the front rubber wheel 7, avoids power waste, and maximizes the use of the original chassis power, but also enriches the driving force source of the road-rail dual-purpose vehicle, and adopts a mixed drive mode of the guide steel wheel 10 and the rear rubber wheel to realize railway traction operation; compared with the same type of road-rail dual-purpose vehicle (the front axle rubber wheel is raised and does not participate in railway operation, the rear axle rubber wheel serves as a driving wheel, and the front and rear guide steel wheels 10 serve as passive wheels), the guide steel wheel 10 of the present invention serves as the active wheel, which increases the railway traction capacity by about 20% and shortens the railway braking distance.

[0027] It should be noted that although the transmission device 6 in the embodiment of the present application adopts gear transmission, other devices with power transmission between shafts, such as belt transmission, chain transmission, etc., can be used as the transmission device 6 in this application without departing from the essence of the present invention.

[0028] The above content is a further detailed description of the present invention in combination with a specific preferred embodiment. It cannot be considered that the specific embodiments of the present invention are limited to this. For ordinary technicians in the technical field to which the present invention belongs, they can make several simple deductions or substitutions without departing from the present invention, which should be regarded as belonging to the scope of patent protection determined by the submitted claims of the present invention.

Claims

1. A driving and guiding mechanism for a road-rail vehicle, comprising a guide steel wheel, a slewing bracket, and a guide cylinder, wherein one end of the guide cylinder is connected to the slewing bracket, and the other end is connected to the chassis of the road-rail vehicle; the end of the slewing bracket away from the guide cylinder is hinged to the chassis; the rotating shaft of the guide steel wheel is connected to the slewing bracket, and is characterized in that: The driving guide mechanism further includes a first rotating shaft connected to the slewing bracket, the first rotating shaft is provided with a friction wheel for frictionally transmitting with the front rubber wheel of the road-rail vehicle, and the first rotating shaft is connected to the rotating shaft of the guide steel wheel through a transmission device; The front crossbeam and the rear connecting seat are provided on the longitudinal beam of the chassis of the road-rail dual-use vehicle. The slewing bracket includes a connecting rod, a rocker arm, an inner vertical plate and an outer vertical plate. The rocker arm is sleeved on the connecting rod and can slide on the connecting rod. One end of the rocker arm is hinged to the rear connecting seat through a pin shaft. A locking piece for preventing the pin shaft from falling off is provided on the pin shaft. The outer side of the pin shaft is connected to the rocker arm through a composite bearing. An adjusting washer is provided between the rear connecting seat and the rocker arm. An ear plate is provided at the other end of the rocker arm. The ear plate is hinged to the lower end of the guide cylinder through a second pin shaft. A locking piece for preventing the pin shaft from falling off is provided on the second pin shaft. A spacer is provided between the shaft and the lower end of the guide cylinder, a cylinder mounting seat is provided at the upper end of the guide cylinder, the cylinder mounting seat is connected to the front crossbeam of the chassis by bolts, the outer end of the connecting rod is connected to the rotating shaft of the guide steel wheel through the inner vertical plate and the outer vertical plate, the guide steel wheel is arranged in the middle position of the inner vertical plate and the outer vertical plate, and a track sweeper is provided at the front end of the guide steel wheel, the track sweeper includes a flat plate and a brush arranged under the flat plate, the track sweeper is welded to the inner vertical plate and the outer vertical plate, the track sweeper is used to clean debris on the rails, and the outer side of the outer vertical plate is provided with the first rotating shaft.

2. The driving and guiding mechanism of the road-rail vehicle according to claim 1, characterized in that: The transmission device is a gear transmission device, a belt transmission device or a chain transmission device.

3. The driving and guiding mechanism of the road-rail vehicle according to claim 1, characterized in that: The transmission device includes a first gear and a second gear meshing with the first gear. The first rotating shaft is connected to the first gear. The second gear is connected to the rotating shaft of the guide steel wheel. The first gear and the second gear are arranged in a gear box, and the gear box is connected to the rotating bracket through a bracket.

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