CN111874026B - Bogie frame, bogie, rail vehicle and rail transit system - Google Patents

Abstract

The invention provides a bogie frame, a bogie, a rail vehicle and a rail transit system, and belongs to the technical field of rail vehicles. The bogie frame comprises two parallel side beams, two end beams and a support frame for connecting the two side beams; each side beam is respectively provided with a first mounting position for mounting a wheel pair; the two end beams are respectively arranged at two ends of the same side beam and form a closed figure with the two side beams; a second mounting position for mounting the rubber wheel is arranged on the end beam positioned in front; the support frame is located between first installation position and the second installation position for install draw gear and linkage. The invention also provides the bogie, the rail vehicle and a rail transit system. The bogie frame, the bogie, the rail vehicle and the rail transit system provided by the invention realize self convergence of the frame structure, reduce the excitation source in the vehicle operation by adopting a mode of combining the steel wheels and the rubber wheels, and improve the stability and the running stability of the bogie.

Description

Bogie frame, bogie, rail vehicle and rail transit system

Technical Field

The invention belongs to the technical field of railway vehicles, and particularly relates to a bogie frame, a bogie, a railway vehicle and a railway traffic system.

Background

With the increase of population, the traffic pressure is higher and higher, and the development of rail transit can well solve the problem of urban public transport. And the social connection and the economic connection between cities are tighter, people in the cities go out more frequently, and the rapid and convenient articulated vehicle becomes the most convenient vehicle. The requirements of low platform, multi-point stop, large starting acceleration and rapid taking-off and landing are the inevitable trend of railway vehicle development.

The most critical problem of the rail vehicle is stability and safety, and how to make the rail vehicle have high-index safety and safety is always the direction of vehicle research at present. At present, two common railway vehicle bogies are available, one is a two-axle four-wheel structure, and the other is a single-axle two-wheel structure. When the two-shaft four-wheel type bogie is adopted, the running process of the bogie is equivalent to the movement of a rhomboid quadrangle, and the deformation of the bogie can be inevitably generated because the rhomboid quadrangle has no stability, so that the most direct problem is that the wheels in the bogie, which are in contact with the track, are easy to generate transverse movement, and further the wheels are eccentric. When the single-shaft two-wheel bogie is adopted, although the self weight of the vehicle is reduced, the dynamic disturbance of a track system is alleviated, and the running noise of the vehicle is reduced, the bogie is sensitive to the vertical unsmooth winding of a track line, the snakelike motion resistance is poor, and the stable index of the bogie is poorer than that of a two-shaft four-wheel bogie.

Disclosure of Invention

The embodiment of the invention aims to provide a bogie frame, a bogie, a railway vehicle and a railway traffic system, and aims to solve the technical problems that the existing bogie is easy to deform and poor in stability in the operation process.

In one aspect, a bogie frame is provided, comprising:

two side beams parallel to each other; each side beam is provided with a first mounting position for mounting a wheel pair;

the two end beams are respectively arranged at two ends of the same side beam and form a closed pattern with the two side beams; a second mounting position for mounting the rubber wheel is arranged on the end beam positioned in front; and

and the support frame is connected with the two side beams, is positioned between the first mounting position and the second mounting position and is used for mounting a traction device and a suspension device.

Further, the support frame includes:

two cross beams parallel to each other; two ends of each cross beam are respectively connected with the two side beams; and

and the vertical beam is connected with the two cross beams.

Further, the end beams are arc-shaped beams protruding outwards.

Further, the second mounting location is located in the middle of the corresponding end beam.

Furthermore, the end beam positioned at the rear part is detachably connected with the two side beams respectively.

One of the above technical solutions has the following beneficial effects: compared with the prior art, the end beam for connecting the two side beams is arranged at the two ends of the side beams respectively, the supporting frame for installing the traction device and the suspension device is arranged between the two side beams, the self convergence of the frame structure is realized, meanwhile, the stress of the frame in the operation process can be well dispersed, the stress concentration phenomenon is avoided, the stability of the whole structure of the bogie frame is effectively improved, the risk of deformation of the bogie frame in the use process is reduced, and the transverse movement and eccentric wear of wheels are effectively avoided. The bogie frame has a subversive design concept, is essentially different from the conventional bogie frame, and has a reasonable structure, so that the bogie frame provided by the embodiment of the invention has good comprehensive dynamic performance and good manufacturing manufacturability.

In addition, the bogie frame provided by the embodiment of the invention is provided with a first mounting position for mounting the wheel pair and a second mounting position for mounting the rubber wheel. The bogie frame provided by the embodiment of the invention can form a novel power bogie with three-point contact rail surfaces, so that the stability of the triangle is utilized to ensure that the bogie does not generate diamond motion, and the bogie has good stability in the operation process. And the second mounting position for mounting the rubber wheels is arranged on the end beam positioned in front, so that the bogie frame provided by the embodiment can be used for mounting steel wheels and rubber wheels, the excitation source in the running of a vehicle is effectively reduced, the vibration generated in the running of the bogie is fundamentally solved, and the defects of deformation and poor stability of the bogie caused by the conventional double-shaft bogie and the single-shaft bogie are overcome.

In another aspect, a bogie is provided, comprising:

the bogie frame;

the traction device is arranged on the support frame;

the suspension device is arranged on the support frame;

the wheel pair is arranged on the first installation position, and the axial direction of the wheel pair is parallel to the length direction of the support frame; and

and the rubber wheel is arranged on the second mounting position and used for walking on a track surface between the two steel rails.

Further, the bogie further comprises:

and the driving device is used for driving the rubber wheel to rotate.

Furthermore, the rubber wheels are arranged in parallel.

One of the above technical solutions has the following beneficial effects: compared with the prior art, the technology of three-point contact rail surface has been adopted for the first time, has set up the bogie that steel wheel and rubber wheel mix and constitute, has set up the end beam who is used for connecting two curb girders respectively at the both ends of curb girder simultaneously, has realized truss structure's self-convergence, has effectively improved bogie frame overall structure's stability, has reduced the risk that the bogie frame takes place to warp in the use, and then has effectively avoided the wheel to take place horizontal drunkenness and eccentric wear. And because the rubber wheel is in direct contact with the track surface and is not in contact with the steel rail, the excitation generated by the direct contact of the conventional steel track and the steel wheel is avoided, the excitation source in the running of the vehicle is further reduced, the vibration generated in the running of the bogie is fundamentally solved, the service life of the bogie is prolonged, the comfort of passengers is improved, and the dynamic performance of the vehicle is improved.

The bogie provided by the embodiment of the invention has reasonable overall structural layout and novel structure, belongs to a brand new structural system, has certain foresight, is innovative in technology and thought, is essentially different from a conventional two-shaft four-point contact track or a single-shaft two-wheel contact track, and has good comprehensive dynamic performance and good manufacturing manufacturability due to the reasonable structure. The placement position of the rubber wheels overturns the inherent idea that the conventional supporting wheels (wheels in contact with the rail surface) can only be placed above the rail (or can only be in contact with the steel rail). In addition, the number of wheels of the bogie provided by the embodiment of the invention also subverts the inherent idea that the number of wheels in contact with the track can only be even.

In another aspect, a rail vehicle is provided, including:

a vehicle body; and

the bogie is arranged at the bottom of the vehicle body.

One of the above technical solutions has the following beneficial effects: compared with the prior art, the bogie has basically the same technical effect, and is not repeated herein.

In another aspect, a rail transit system is provided, including:

two steel rails parallel to each other;

the track surface is positioned between the two steel rails; and

in the rail vehicle, two wheels of the wheel pair respectively run on two steel rails, and the rubber wheel runs on the rail surface;

and a guide structure for guiding the trend of the rubber wheel is arranged on the track surface.

One of the above technical solutions has the following beneficial effects: compared with the prior art, the rail vehicle has basically the same technical effect, and is not repeated herein. In addition, in this embodiment, the guide structure for guiding the rubber wheel is additionally arranged on the track surface, and the guide structure can well realize the function of self-line guide correction of the bogie, thereby improving the safety quality of the running of the bogie.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a schematic front view of a truck frame according to an embodiment of the present invention;

FIG. 2 is a side view of a truck frame according to an embodiment of the present invention;

fig. 3 is a front view schematically illustrating a bogie according to an embodiment of the present invention;

FIG. 4 is a schematic side view of a bogie according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a rail transit system according to an embodiment of the present invention, in which a vehicle body and an end beam located at the rear are not shown.

In the figure: 100. a bogie frame; 110. a side beam; 120. an end beam; 130. a support frame; 131. a cross beam; 132. erecting a beam; 140. a first mounting location; 150. a second mounting location; 200. a traction device; 300. a suspension device; 400. a wheel set; 500. a rubber wheel; 600. a drive device; 800. a steel rail; 900. and a guide structure.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1 and 2 together, a bogie frame 100 according to an embodiment of the present invention will now be described. The bogie frame 100 includes two side members 110 parallel to each other, two end members 120, and a support bracket 130 connecting the two side members 110. Each of the side beams 110 is provided with a first mounting location 140 for mounting the wheel pair 400. The two end beams 120 are respectively disposed at two ends of the same side beam 110, and enclose a closed figure with the two side beams 110. The second mounting position 150 for mounting the rubber wheel 500 is provided on the end beam 120 located at the front. The support bracket 130 is located between the first mounting location 140 and the second mounting location 150 for mounting the towing attachment 200 and the hanging attachment 300. The forward direction referred to herein is with reference to the traveling direction of the vehicle.

In use, a wheel pair 400 is mounted to the first mounting location 140 of the truck frame 100 and a rubber wheel 500 is mounted to the second mounting location 150 such that two wheels of the wheel pair 400 and one rubber wheel 500 are in contact with the rail, respectively, to form a triangular support structure. Specifically, two wheels (steel wheels) on the wheel pair 400 are respectively located on two rails 800 on the track, and the rubber wheel 500 is located on the track surface between the two rails 800.

The conventional bogie frame 100 is H-shaped and has two open ends, which is not conducive to self-straightening of the bogie stress. Compared with the prior art, the bogie frame 100 provided by the embodiment of the invention has the advantages that the end beams 120 for connecting the two side beams 110 are respectively arranged at the two ends of the side beams 110, and the support frame 130 for mounting the traction device 200 and the suspension device 300 is arranged between the two side beams 110, so that the self-convergence of the frame structure is realized, the stress generated in the operation process of the frame can be well dispersed, the stress concentration phenomenon is avoided, the stability of the whole structure of the bogie frame 100 is effectively improved, the risk of deformation of the bogie frame 100 in the use process is reduced, and the transverse movement and eccentric wear of wheels are effectively avoided. This type of bogie frame 100 has a subversive design concept, which is substantially different from the conventional type of bogie frame 100, and the reasonable structure provides the bogie frame 100 provided by the embodiment of the invention with good comprehensive dynamic performance and good manufacturability.

In addition, the truck frame 100 provided by the embodiment of the present invention is provided with a first mounting position 140 for mounting the wheel pair 400 and a second mounting position 150 for mounting the rubber wheel 500. By using the bogie frame 100 provided by the embodiment of the invention, a novel power bogie with three-point contact rail surfaces can be formed, so that the stability of the triangle is utilized to ensure that the bogie does not generate diamond motion, and the bogie has good stability in the operation process. And the second mounting position 150 for mounting the rubber wheel 500 is arranged on the end beam 120 positioned in front, so that the bogie frame 100 provided by the embodiment can be used for mounting steel wheels and rubber wheels, the excitation source in the running of the vehicle is effectively reduced, the vibration generated in the running of the bogie is fundamentally solved, and the defects of deformation and poor stability of the bogie in the conventional double-shaft bogie and single-shaft bogie are avoided.

Referring to fig. 1 and 2, as an embodiment of the bogie frame 100 provided by the present invention, the supporting frame 130 includes two cross beams 131 parallel to each other and a vertical beam 132 connecting the two cross beams 131. Both ends of each cross member 131 are connected to the two side members 110, respectively.

By adopting the structure, the whole structure of the support frame 130 is simple and stable, and the use requirement is met.

Further, the vertical beams 132 are provided in plurality and are provided at intervals along the extending direction of the cross beam 131.

Referring to fig. 1 and 2, as an embodiment of the truck frame 100 of the present invention, the end beam 120 is an outwardly convex arc beam.

The two side beams 110 and the two end beams 120 enclose an O-shaped structure, the appearance is attractive, the end beams 120 are not easy to deform, meanwhile, the end beams 120 protrude outwards to provide space for mounting the wheel set 400, and therefore the adverse effect of the arrangement of the end beams 120 on the installation of the wheel set 400 is avoided.

Referring to fig. 1 and 3 together, as one embodiment of the truck frame 100 of the present invention, the second mounting locations 150 are located at the middle of the corresponding end beams 120.

The rubber wheel 500 is located in the middle of the end beam 120, i.e. on the center line of two wheels in the wheel pair 400, so as to ensure the stability of the stress on two sides of the bogie frame 100 and ensure the stable operation of the railway vehicle adopting the bogie frame 100 provided by the embodiment.

Referring to fig. 2 and 5, as an embodiment of the truck frame 100 provided by the present invention, the rear end beam 120 and the two side beams 110 are detachably connected to each other, so as to facilitate the installation of the wheel set 400. The wheel pair 400 may be assembled by first mounting the wheel pair to the side sill 110 and then mounting the rear end sill 120 to the side sill 110.

The embodiment of the invention also provides the bogie. Referring to fig. 3 to 5, the bogie includes a bogie frame 100, a traction device 200 and a suspension device 300 mounted on a support frame 130, a wheel pair 400 mounted on a first mounting location 140, and a rubber wheel 500 mounted on a second mounting location 150. The axial direction of the wheel pair 400 is parallel to the length direction of the support frame 130. The rubber wheel 500 is used to travel on a track surface between two rails 800.

In terms of vehicle configuration, in a conventional train formation (illustrated by a conventional two-axle four-wheel bogie, similarly, if the train formation diagram is similar for a single-axle two-wheel bogie), two bogies (two-axle four-wheel or single-axle two-wheel) are arranged at the lower end of each carriage to be used as supporting points to be in contact with a track. When the bogie provided by the embodiment is adopted to carry out train marshalling, although two bogies are also arranged at the lower end of each carriage, three wheels are adopted in each bogie to be in contact with the rail surface, wherein two steel wheels in each bogie are directly in contact with the steel rail 800, and the third rubber wheel 500 is placed in the middle of the vehicle to be in direct contact with the rail surface between the two steel rails 800.

The bogie provided by the embodiment of the invention adopts the technology of three-point contact rail surface for the first time, is provided with the bogie formed by mixing steel wheels and rubber wheels 500, and meanwhile, the two ends of the side beams 110 are respectively provided with the end beams 120 for connecting the two side beams 110, so that the self convergence of the frame structure is realized, the stability of the whole structure of the bogie frame 100 is effectively improved, the risk of deformation of the bogie frame 100 in the use process is reduced, and the transverse movement and eccentric wear of the wheels are effectively avoided. And because the rubber wheel 500 is directly contacted with the track surface and is not contacted with the steel rail 800, the excitation generated by the direct contact of the conventional steel track and the steel wheel is avoided, the excitation source in the running of the vehicle is further reduced, the vibration generated in the running of the bogie is fundamentally solved, the service life of the bogie is prolonged, the comfort of passengers is improved, and the dynamic performance of the vehicle is improved.

The bogie provided by the embodiment of the invention has reasonable overall structural layout and novel structure, belongs to a brand new structural system, has certain foresight, is innovative in technology and thought, is essentially different from a conventional two-shaft four-point contact track or a single-shaft two-wheel contact track, and has good comprehensive dynamic performance and good manufacturing manufacturability due to the reasonable structure. The placement of the rubber wheels 500, among other things, reverses the inherent idea that conventional support wheels (wheels that contact the rail surface) can only be placed above the rail (or can only contact the steel rail). In addition, the number of wheels of the bogie provided by the embodiment of the invention also subverts the inherent idea that the number of wheels in contact with the track can only be even.

Referring to fig. 3, as an embodiment of the bogie provided by the present invention, the bogie further includes a driving device 600 for driving the rubber wheel 500 to rotate.

The driving device 600 directly controls the rotating shaft of the rubber wheel 500, so that a series of driving transmission links of the conventional driving device 600, namely, the conventional driving device 600 is driven to the rotating shaft of the wheel pair 400 through a coupling, a gear box and the like, are reduced, and further, the energy loss is reduced.

Further, one or two driving devices 600 may be provided, when two driving devices 600 are provided, the rotation speeds of the two driving devices 600 are identical, and the two driving devices 600 are separately provided at both sides of the rubber wheel 500 and are respectively connected to both ends of the rubber wheel 500. The two driving devices 600 are provided to realize high-speed rotation of the rubber wheel 500.

Specifically, the driving device 600 may adopt a driving motor, and when in use, the rotating shaft of the rubber wheel 500 may be directly installed in the rotating shaft sleeve of the driving motor, so as to connect the rotating shaft and the driving motor.

The rubber wheel 500 may be connected to the corresponding end beam 120 through a mounting seat, the mounting seat may be detachably connected to the end beam 120 through a bolt, and a mounting hole for mounting the bolt is preset on the corresponding end beam 120. The arrangement of the mounting holes enables the mounting positions of the rubber wheels 500 to be determined after the bogie frame 100 is produced, so that the difference caused by the operation difference of operators can be avoided, and the stability of the whole bogie structure and the stability of vehicle operation are further ensured.

Further, one or more rubber wheels 500 may be provided, and when a plurality of rubber wheels 500 are provided, the plurality of rubber wheels 500 are arranged in parallel, which may further improve the running stability of the bogie.

The embodiment of the invention also provides the railway vehicle. The rail vehicle comprises a vehicle body and a bogie arranged at the bottom of the vehicle body.

The railway vehicle provided by the embodiment of the invention adopts the bogie, basically the same technical effects are achieved, and the details are not repeated.

The embodiment of the invention also provides a rail transit system. Referring to fig. 5, the rail transit system includes two parallel rails 800, a rail surface between the two rails 800, and a rail vehicle, wherein two wheels of the wheel set 400 respectively run on the two rails 800, and the rubber wheel 500 runs on the rail surface. Wherein, a guide structure 900 for guiding the trend of the rubber wheel 500 is arranged on the track surface.

In this embodiment, the guide structure 900 may be a rail on which the rubber wheel 500 travels and which is parallel to the rail 800, or a stopper or the like which is provided on a rail surface to prevent the rubber wheel 500 from shifting, and may be specifically set as needed, and is not limited herein.

The rail transit system provided by the embodiment of the invention adopts the rail vehicles, basically the same technical effects are obtained, and the details are not repeated. In addition, in this embodiment, the guide structure 900 for guiding the rubber wheel 500 is additionally arranged on the track surface, and the guide structure 900 can well realize the function of self-line guide correction of the bogie, thereby improving the safety quality of the running of the bogie.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. A bogie frame, comprising:

two side beams parallel to each other; a first mounting position is respectively arranged on each side beam; the first mounting position is provided with a wheel pair;

the two end beams are respectively arranged at two ends of the same side beam and form a closed pattern with the two side beams; a second mounting position is arranged on the end beam positioned in front; the second mounting position is provided with a rubber wheel; and

the supporting frame is connected with the two side beams, is positioned between the first mounting position and the second mounting position, and is used for mounting a traction device and a suspension device;

the two wheels on the wheel pair are respectively positioned on two steel rails on a track, the rubber wheel is positioned on a track surface between the two steel rails, and the two wheels and the rubber wheel are respectively contacted with the track to form a triangular supporting structure.

2. The truck frame of claim 1 wherein the support bracket comprises:

two cross beams parallel to each other; two ends of each cross beam are respectively connected with the two side beams; and

and the vertical beam is connected with the two cross beams.

3. The bogie frame of claim 1, wherein: the end beam is an arc beam protruding outwards.

4. The bogie frame of claim 1, wherein: the second mounting position is located in the middle of the corresponding end beam.

5. The bogie frame of any one of claims 1-4, wherein: the end beam positioned at the rear part is detachably connected with the two side beams respectively.

6. A bogie, comprising:

the bogie frame of any one of claims 1-5;

the traction device is arranged on the support frame;

and the suspension device is arranged on the support frame.

7. The bogie of claim 6, further comprising:

and the driving device is used for driving the rubber wheel to rotate.

8. The bogie according to claim 6 or 7, wherein: the rubber wheels are arranged in parallel.

9. Rail vehicle, its characterized in that includes:

a vehicle body; and

a bogie as claimed in any one of claims 6 to 8 which is disposed at the base of the vehicle body.

10. Rail transit system, its characterized in that includes:

two steel rails parallel to each other;

the track surface is positioned between the two steel rails; and

the railway vehicle as claimed in claim 9, wherein the two wheels of the wheel set run on the two rails, respectively, and the rubber wheels run on the track surface;

and a guide structure for guiding the trend of the rubber wheel is arranged on the track surface.

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