CN112644537A

CN112644537A - Forced guide radial bogie for straddle type monorail vehicle

Info

Publication number: CN112644537A
Application number: CN202110037665.XA
Authority: CN
Inventors: 侯龙刚; 梁树林; 池茂儒; 刘开成
Original assignee: Southwest Jiaotong University
Current assignee: Southwest Jiaotong University
Priority date: 2021-01-12
Filing date: 2021-01-12
Publication date: 2021-04-13
Anticipated expiration: 2041-01-12
Also published as: CN112644537B

Abstract

The invention provides a forced guide radial bogie of a straddle type monorail vehicle, which comprises a guide torsion bar device, a first bogie and a second bogie, wherein the first bogie is hinged with the second bogie, the first bogie is provided with a one-position axle, the second bogie is provided with a two-position axle, and the middle parts of the one-position axle and the two-position axle are respectively provided with a walking wheel which is in contact with the upper surface of a track; the two sides of the first bogie and the second bogie are respectively provided with the connecting rod guide device, the connecting rod guide devices actively change the angle between the first bogie and the second bogie, longitudinal restraint on the walking wheels is removed, the walking wheels roll on a curved track purely, and no transverse force is generated, so that the curve passing capacity of the straddle type monorail bogie is improved, the linear running transverse stability of the bogie is improved, the running quality of a vehicle is improved, eccentric wear and abnormal noise of the walking wheels of the monorail vehicle on the curved track are reduced, and the driving safety is ensured.

Description

Forced guide radial bogie for straddle type monorail vehicle

Technical Field

The invention relates to the field of design of railway vehicles, in particular to a forced guide radial bogie of a straddle type monorail vehicle.

Background

With the continuous development of urbanization, vehicles of various standards are produced. The monorail vehicle is used as a medium-traffic-volume rail transit vehicle and is continuously popularized and applied in China in recent years. The straddle type monorail vehicle has the advantages that the structure of the straddle type monorail vehicle is different from that of a railway vehicle greatly, the straddle type monorail vehicle is taken as a classic system of urban rail traffic, has the characteristics of small turning radius, small occupied area, strong climbing capability, comfortable riding and the like, and is wide in application prospect, but when the monorail vehicle passes a curve, the walking wheels are easy to roll and laterally deviate under the coupling action of the walking wheels, the guide wheels and the stabilizing wheels, and the lateral slippage and the lateral force of a tread can cause eccentric wear of the walking wheels. The running route has more curves and smaller curvature, so that the tire eccentric wear of the running wheel of the vehicle is serious, the service cycle of the tire is short, the maintenance and repair cost is high, the adhesion capacity of the running tire is greatly reduced, the driving efficiency of the straddle type monorail vehicle is reduced, the braking distance is lengthened, and the driving safety is seriously influenced.

Disclosure of Invention

Aiming at the problems in the prior art, the invention provides a forced guide radial bogie for a straddle type monorail vehicle, which solves the problems that running wheels are easy to have serious eccentric wear when the straddle type monorail vehicle runs on a curved track, and the running safety is seriously influenced in the prior art.

In order to achieve the purpose of the invention, the technical scheme adopted by the invention is as follows:

the forced guide radial bogie for the straddle type monorail vehicle comprises a guide torsion bar device, a first bogie and a second bogie, wherein the first bogie and the second bogie can be U-shaped, the closed end of the first bogie is hinged with the closed end of the second bogie, a one-position axle is arranged at the open end of the first bogie, a two-position axle is arranged at the opening of the second bogie, and walking wheels in contact with the upper surface of a rail are arranged in the middle of the one-position axle and the two-position axle;

the guide torsion bar device is fixedly connected with the chassis of the vehicle body and is hinged with one end of a one-position axle; the two sides of the first bogie and the second bogie are respectively provided with a connecting rod guide device, the connecting rod guide devices comprise a first connecting rod hinged with the end part of the first bogie and a second connecting rod hinged with the end part of the second bogie, an intermediate connecting rod is arranged between the first connecting rod and the second connecting rod, three hinge holes are formed in the intermediate connecting rod, the hinge holes in the two sides are respectively hinged with the free ends of the first connecting rod and the second connecting rod, and the intermediate connecting rod rotates around the intermediate hinge holes.

Taking a monorail vehicle turning right as an example, on a curved track, a guide torsion bar device is respectively connected with a first axle and fixed with a chassis of a vehicle body of a previous carriage, the guide torsion bar device forces the first axle to rotate clockwise, and the first axle twists clockwise to drive a connecting rod guide device to act; the motion process of the connecting rod guide device positioned on the right side of the first bogie and the second bogie is as follows: under the twisting of a first connecting rod axle, the first connecting rod moves backwards to drive the middle connecting rod to rotate anticlockwise around the middle hinge hole, the anticlockwise-rotating middle connecting rod drives the second connecting rod to move forwards, and then the second connecting rod drives the whole second bogie to rotate anticlockwise relative to the first bogie. The motion forms of the connecting rod guide devices on the left side of the first bogie and the second bogie are opposite to the motion forms of the connecting rod guide devices on the right side of the first bogie and the second bogie, when a vehicle runs on a bent track, relative rotation angles are generated between a front vehicle and a rear vehicle, the connecting rod guide devices work under stress, the angle between the first bogie and the second bogie is actively changed, the first bogie and the second bogie are in a splayed shape, when the vehicle passes through a curved track, the walking wheels are adjusted to the radial positions of the curved track, and at the positions, the walking wheels roll purely without any transverse force, so that the curve passing capacity of the straddle type monorail bogie is improved, the linear running transverse stability of the bogie is improved, the vehicle running quality is improved, the eccentric wear and abnormal noise of the walking wheels of the straddle type monorail vehicle on the curve are effectively reduced, and the driving safety is ensured.

Furthermore, the forced guide radial bogie of the straddle type monorail vehicle further comprises a push-pull connecting rod, two ends of the push-pull connecting rod are hinged to the lower bottom surfaces of the first bogie and the second bogie respectively, and the push-pull connecting rod assists the first bogie and the second bogie to rotate relatively, so that when the forced guide radial bogie of the straddle type monorail vehicle runs on a complete track, an angle between the forced guide radial bogie and the first bogie and the second bogie is necessarily changed.

Furthermore, the forced guide radial bogie of the straddle type monorail vehicle also comprises a framework which can be H-shaped, the framework is arranged at the top parts of the first bogie and the second bogie, and the walking wheels on the one-position axle and the two-position axle are respectively arranged in openings at two ends of the framework; the middle connecting rod is hinged with the inner side wall of the framework through a middle hinge hole.

Furthermore, a plurality of positioning blocks are arranged on the framework, and the one-position axle and the two-position axle are movably connected with the framework through the plurality of positioning blocks. The framework can strengthen the strength of the whole bogie and ensure the structural stability of the bogie.

Furthermore, in order to drive and brake the travelling wheels, two sides of the framework are provided with braking devices, each braking device comprises a plurality of brake discs fixedly connected with one ends of the one-position axle and the two-position axle respectively and a plurality of brake calipers used for clamping the brake discs, and the other ends of the one-position axle and the two-position axle are fixedly connected with power devices.

Further, the power device is a motor.

Furthermore, in order to limit the rolling of the walking wheels on the surface of the track, prevent the deviation of the walking wheels, improve the guiding stability and the anti-overturning property of the bogie and improve the stability of a transverse line of the straight line and curve running of the vehicle, a plurality of guiding wheels are fixedly arranged on two sides of the framework, the plurality of guiding wheels are respectively arranged on two sides of the one-position axle and the two-position axle, the plurality of guiding wheels are in contact with the side wall of the track, and the axes of the plurality of guiding wheels are vertical to the axes of the walking wheels.

Furthermore, the two sides of the framework are fixedly provided with safety wheels of which the axes are parallel to the axes of the guide wheels, and the gap between the outer walls of the two safety wheels and the side wall of the track is 2-5 cm. When the vehicle normally travels, the safety wheel is not in contact with the side wall of the track, and when the guide wheel fails, the safety wheel provides fault protection, prevents the vehicle from overturning and turning on one side, and improves the traveling safety of the vehicle.

Furthermore, a central traction device connected with the bottom of the frame is movably connected at the hinged part of the first bogie and the second bogie. The central traction device is used for fixing the whole bogie and the carriage.

Furthermore, the upper surface of the framework is fixedly provided with two air springs connected with the bottom of the frame, and the air springs are used for reducing and filtering vibration transmitted from the bogie to the carriage, so that the running quality of the wheels is improved.

The invention has the beneficial effects that: according to the scheme, the first bogie, the second bogie and the connecting rod guide device are arranged, so that longitudinal restraint on the walking wheels is removed, the walking wheels roll on a curve track, and no transverse force is generated, so that the curve passing capacity of the straddle type monorail bogie is improved, the transverse stability of linear running of the bogie is improved, the running quality of a vehicle is improved, eccentric wear and abnormal noise of the walking wheels of the straddle type monorail vehicle on the curve are effectively reduced, and the driving safety is guaranteed. The arrangement of the whole bogie in the scheme has great benefits for reducing the tire replacement frequency, improving the running stability, saving the operation and maintenance cost and reducing the environmental noise pollution of the straddle type monorail vehicle and other urban rail transit.

Drawings

FIG. 1 is a schematic structural view of a forced guide radial bogie of a straddle type monorail vehicle.

Fig. 2 is a schematic structural view of the first bogie and the second bogie which are hinged.

Fig. 3 is a schematic bottom view of the first bogie and the second bogie hinged together.

FIG. 4 is a schematic structural view of the framework.

Wherein, 1, guide the torsion bar device; 2. a first bogie; 3. a second bogie; 4. a single axle; 5. a two-position axle; 6. a running wheel; 7. a connecting rod guide; 701. a first link; 702. a second link; 703. a middle connecting rod; 8. a push-pull connecting rod; 9. a frame; 10. positioning blocks; 11. a brake disc; 12. a brake caliper; 13. a power plant; 14. a guide wheel; 15. a safety wheel; 16. a central traction device; 17. an air spring.

Detailed Description

The following description of the embodiments of the present invention is provided to facilitate the understanding of the present invention by those skilled in the art, but it should be understood that the present invention is not limited to the scope of the embodiments, and it will be apparent to those skilled in the art that various changes may be made without departing from the spirit and scope of the invention as defined and defined in the appended claims, and all matters produced by the invention using the inventive concept are protected.

As shown in fig. 1 to 4, the invention provides a forced guide radial bogie for a straddle-type monorail vehicle, which comprises a guide torsion bar device 1, a first bogie 2 and a second bogie 3, wherein the first bogie 2 and the second bogie 3 can be in a U shape, the closed end of the first bogie 2 is hinged with the closed end of the second bogie 3, the open end of the first bogie 2 is provided with a one-position axle 4, the opening of the second bogie 3 is provided with a two-position axle 5, and the middle parts of the one-position axle 4 and the two-position axle 5 are provided with running wheels 6 which are in contact with the upper surface of a rail; the hinged joint of the first bogie 2 and the second bogie 3 is movably connected with a central traction device 16 connected with the bottom of the frame. The central draft gear 16 is used to secure the entire truck to the car.

The guide torsion bar device 1 is fixedly connected with the chassis of the vehicle body, and the guide torsion bar device 1 is hinged with one end of a one-position axle 4; two sides of the first bogie 2 and the second bogie 3 are respectively provided with a connecting rod guide device 7, each connecting rod guide device 7 comprises a first connecting rod 701 hinged with the end part of the one-position axle 4 and a second connecting rod 702 hinged with the end part of the two-position axle 5, an intermediate connecting rod 703 is arranged between the first connecting rod 701 and the second connecting rod 702, three hinge holes are formed in the intermediate connecting rod 703, the hinge holes in the two sides are respectively hinged with the free ends of the first connecting rod 701 and the second connecting rod 702, and the intermediate connecting rod 703 rotates around the intermediate hinge hole.

Taking a monorail vehicle turning right as an example, on a curved track, the guide torsion bar device 1 is respectively connected with a first axle 4 and fixed with a chassis of a vehicle body of a previous carriage, the guide torsion bar device 1 forces the first axle 4 to rotate clockwise, and the first axle 4 twists clockwise to drive the connecting rod guide device 7 to act; the movement process of the link guide 7 located on the right side of the first bogie 2 and the second bogie 3 is: under the twisting of the first connecting rod 701 on the axle 4, the first connecting rod 701 moves backwards to drive the middle connecting rod 703 to rotate anticlockwise around the middle hinge hole, the middle connecting rod 703 rotating anticlockwise drives the second connecting rod 702 to move forwards, and then the second connecting rod 702 drives the whole second bogie 3 to rotate anticlockwise relative to the first bogie 2. The motion forms of the connecting rod guide devices 7 on the left sides of the first bogie 2 and the second bogie 3 are opposite to that of the connecting rod guide devices 7 on the right sides of the first bogie 2 and the second bogie 3, so that a splayed shape is formed between the first bogie 2 and the second bogie 3, when the bogie passes through a curve track, the walking wheels 6 are adjusted to the radial positions of the curve track, and in the positions, the walking wheels 6 roll purely without any transverse force, so that the curve passing capacity of the straddle type monorail bogie is improved, the linear running transverse stability of the bogie is improved, the running quality of the vehicle is improved, eccentric wear and abnormal noise of the walking wheels 6 of the straddle type monorail vehicle on the curve are effectively reduced, and the running safety is ensured.

The forced guide radial bogie of the straddle type monorail vehicle further comprises a push-pull connecting rod 8, two ends of the push-pull connecting rod 8 are hinged to the lower bottom surfaces of the first bogie 2 and the second bogie 3 respectively, and the push-pull connecting rod 8 assists the first bogie 2 and the second bogie 3 to rotate relatively, so that when the forced guide radial bogie of the straddle type monorail vehicle runs on a complete track, an angle between the forced guide radial bogie and the complete track is necessarily changed.

The forced guide radial bogie of the straddle type monorail vehicle further comprises a framework 9, the framework 9 can be H-shaped, the framework 9 is arranged at the tops of the first bogie 2 and the second bogie 3, and the walking wheels 6 on the one-position axle 4 and the two-position axle 5 are respectively arranged in openings at two ends of the framework 9; the intermediate link 703 is hinged to the inner side wall of the frame 9 through an intermediate hinge hole. The framework 9 is provided with a plurality of positioning blocks 10, and the one-position axle 4 and the two-position axle 5 are movably connected with the framework 9 through the plurality of positioning blocks 10. The frame 9 can strengthen the strength of the whole bogie and ensure the structural stability of the bogie.

The two sides of the framework 9 are provided with braking devices, each braking device comprises a plurality of brake discs 11 fixedly connected with one ends of the one-position axle 4 and the two-position axle 5 respectively and a plurality of brake calipers 12 used for clamping the brake discs 11, the other ends of the one-position axle 4 and the two-position axle 5 are fixedly connected with power devices 13, and the power devices 13 can be motors.

A plurality of guide wheels 14 are fixedly arranged on two sides of the framework 9, the guide wheels 14 are respectively arranged on two sides of the one-position axle 4 and the two-position axle 5, the guide wheels 14 are all in contact with the side wall of the track, and the axes of the guide wheels 14 are perpendicular to the axes of the walking wheels 6. The safety wheels 15 with the axes parallel to the axes of the guide wheels 14 are fixedly arranged on two sides of the framework 9, and the gap between the outer walls of the two safety wheels 15 and the side wall of the track is 2-5 cm. The arrangement of the guide wheels 14 and the safety wheels 15 can limit the running wheels 6 to roll on the upper surface of the track, prevent the running wheels 6 from deflecting, improve the guiding stability and the anti-overturning property of the bogie, and improve the stability of a transverse line of the straight line and the curve running of the vehicle; when the vehicle normally runs, the safety wheels 15 are not in contact with the side walls of the track, and when the guide wheels 14 fail, the safety wheels 15 provide fault protection to prevent the vehicle from overturning and turning on the side, so that the running safety of the vehicle is improved. Two air springs 17 connected with the bottom of the frame are fixedly arranged on the upper surface of the framework 9, and the air springs 17 are used for reducing and filtering vibration transmitted from the bogie to a carriage and improving the running quality of wheels. The arrangement of the whole bogie in the scheme has great benefits for reducing the tire replacement frequency, improving the running stability, saving the operation and maintenance cost and reducing the environmental noise pollution of the straddle type monorail vehicle and other urban rail transit.

Claims

1. A straddle-type monorail vehicle is forced to guide a radial bogie, characterized in that it comprises a guide torsion bar device (1), a first bogie (2) and a second bogie (3), the first bogie The frame (2) and the second bogie (3) are hingedly connected, the first bogie (2) is provided with a one-position axle (4), and the second bogie (3) is provided with a two-position axle (5), The middle parts of the first-position axle (4) and the second-position axle (5) are provided with running wheels (6) in contact with the upper surface of the track;

The guide torsion bar device (1) is fixedly connected with the chassis of the vehicle body, and the guide torsion bar device (1) is hinged with one end of an axle (4); A connecting rod guide device (7) is provided on both sides, and the connecting rod guide device (7) includes a first connecting rod (701) hinged with the end of the first-position axle (4) and a second-position axle (5) A second connecting rod (702) with hinged ends, an intermediate connecting rod (703) is arranged between the first connecting rod (701) and the second connecting rod (702), and an intermediate connecting rod (703) is arranged on the There are three hinge holes, the hinge holes on both sides are respectively hinged with the free ends of the first link (701) and the second link (702), and the middle link (703) rotates around the middle hinge hole.

2. A straddle-type monorail vehicle forcibly guided radial bogie according to claim 1, further comprising a bottom surface connected to the first bogie (2) and the second bogie (3) at both ends respectively Hinged push-pull link (8).

3. A forced-steering radial bogie for a straddle-type monorail vehicle according to claim 1, characterized in that it further comprises an "H"-shaped frame (9), wherein the frame (9) is arranged on the The tops of the first bogie (2) and the second bogie (3), the running wheels (6) on the first axle (4) and the second axle (5) are respectively arranged in the openings at both ends of the frame (9) ; The intermediate link (703) is hinged with the inner side wall of the frame (9) through the intermediate hinge hole.

4. A straddle-type monorail vehicle forcibly guided radial bogie according to claim 3, wherein a plurality of positioning blocks (10) are provided on the frame (9), and the one-position axle ( 4) and the two-position axle (5) are movably connected to the frame (9) through a plurality of the positioning blocks (10).

5. A straddle-type monorail vehicle forcibly guided radial bogie according to claim 4, wherein braking devices are provided on both sides of the frame (9), and the braking devices comprise a plurality of A brake disc (11) fixedly connected at one end of the first-position axle (4) and the second-position axle (5) and a plurality of brake calipers (12) for clamping the brake disc (11), one A power unit (13) is fixedly connected to the other end of the axle (4) and the two-position axle (5).

6. The straddle-type monorail vehicle forcibly guided radial bogie according to claim 5, wherein the power device (13) is an electric motor.

7. A straddle-type monorail vehicle forcibly guided radial bogie according to claim 3, characterized in that a plurality of guide wheels (14) are fixedly arranged on both sides of the frame (9), and a plurality of the The guide wheels (14) are respectively arranged on both sides of the first-position axle (4) and the second-position axle (5), the plurality of guide wheels (14) are all in contact with the side walls of the track, and the axes of the plurality of guide wheels (14) are in contact with the side walls of the track. The axis of the running wheel (6) is vertical.

8. A straddle-type monorail vehicle forcibly guided radial bogie according to claim 7, characterized in that, both sides of the frame (9) are fixedly provided with an axis and the axis of the guide wheel (14) For the parallel safety wheels (15), the gap between the outer walls of the two safety wheels (15) and the side walls of the track is 2-5 cm.

9. A straddle-type monorail vehicle forced-oriented radial bogie according to claim 1, characterized in that the hinge joint of the first bogie (2) and the second bogie (3) is movably connected with a A central traction unit (16) attached to the bottom of the frame.

10. A straddle-type monorail vehicle forcibly guided radial bogie according to claim 7, wherein two air springs (17) connected to the bottom of the frame are fixed on the upper surface of the frame (9).