Axle bridge type self-guiding independent rotating wheel running gear with external axle boxes and rolling stock

Abstract

The utility model provides an axle bridge type self-guiding independent rotating wheel running gear with an external axle box and a locomotive vehicle. The axle bridge type self-guiding independent rotating wheel running gear comprises independent rotating wheels, half axles, rolling bearings, guiding rotating arm beams, positioning plates, connecting plates, axle bridges, elastic suspensions, side beams, cross beams, transverse rods and transverse shock absorbers. An angle adjusting hole is formed in the positioning plate and connected with a sliding groove in the connecting plate, a certain dip angle can be formed between the connecting line of the circle centers of the upper hole and the lower hole of the positioning plate and the vertical line, and by adjusting the dip angle, the linear centering performance and the curve passing performance of the walking part of the independent rotating wheel are improved, and the running safety of the vehicle with the independent rotating wheel is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of locomotives and vehicles, and in particular to an axle-bridge type self-steering independently rotating wheel running gear with an external axle box and a locomotive and vehicle. Background Art

[0002] At present, the independently rotating wheels decouple the two wheels of the rigid wheelset, and can rotate around the axle independently. However, the independently rotating wheels lack longitudinal creep force and lose the automatic centering and curve guidance capabilities of traditional rigid wheelsets. In actual operation, the independently rotating wheels are difficult to automatically return to the center of the track once they are offset under certain lateral disturbances. On curved tracks, they can only rely on the wheel rim for guidance, and the wheel rim wear problem is very serious. Therefore, the guidance problem of the independently rotating wheels needs to be solved urgently. Summary of the invention

[0003] An embodiment of the present invention provides an axle-bridge type self-steering independently rotating wheel running gear with an external axle box, which improves the self-steering ability of the running gear by adjusting the inclination angle, improves the straight-line automatic centering performance and curve passing performance of the independently rotating wheel running gear, and improves the operating safety of the independently rotating wheel vehicle.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] On the one hand, the present invention provides an axle-bridge type self-steering independent rotating wheel running gear with an axle box externally mounted, comprising: 4 symmetrically arranged independent rotating wheels, 4 half-axles, 8 rolling bearings, 4 guide swing arm beams, 4 positioning plates and 4 connecting plates, 2 axle bridges, 8 elastic suspensions, 2 side beams, 2 cross beams, 2 transverse rods, and 2 transverse shock absorbers;

[0006] Each of the independently rotatable wheels is connected to one of the half shafts via the rolling bearing;

[0007] Each of the half-axles is fixedly connected to one of the guide arm beams;

[0008] Each of the guide pivot arm beams is connected to one of the positioning plates through two upper and lower mounting holes; the guide pivot arm beam can rotate around the axis of the upper and lower mounting holes of the positioning plate; an angle adjustment hole and a positioning hole are arranged on the facade of each positioning plate; the angle adjustment hole of the positioning plate is connected to the slide groove on the connecting plate; the axis of the upper and lower mounting holes of the positioning plate is the kingpin axis, and the angle formed by the kingpin axis and the vertical perpendicular line is called the inclination angle, and the kingpin axes on both sides of the axle bridge are parallel to each other.

[0009] Preferably, the axle bridge is a sunken guide frame structure, each of the positioning plates is fixed to the axle bridge via one of the connecting plates, the two independently rotating wheels are respectively connected to the left and right sides of the inside of the axle bridge guide frame via the positioning plates, and each guide frame is provided with four elastic suspension mounting seats.

[0010] Preferably, the side beam is placed on the elastic suspension mounting seat of the axle bridge through the elastic suspension, and the two side beams are fixedly connected in parallel through the two cross beams in the middle.

[0011] Preferably, both ends of the transverse rod are respectively hinged to the front ends of the two guide pivot arm beams; the transverse rod and the two guide pivot arm beams form a four-bar linkage, and the independently rotating wheels on both sides are turned simultaneously through the transverse rod; the transverse rod is connected to the axle bridge through one of the transverse shock absorbers.

[0012] Preferably, each of the guide pivot arm beams is connected to one of the positioning plates via bolts.

[0013] Preferably, the angle adjustment hole of the positioning plate and the slide groove on the connecting plate are connected by bolts.

[0014] On the other hand, the present invention provides a locomotive vehicle, comprising the above-mentioned axle-bridge type self-steering independently rotating wheel running gear with an external axle box.

[0015] On the other hand, the present invention also provides a control method for an axle-bridge type self-steering independently rotating wheel running gear with an external axle box, comprising the following steps:

[0016] When the independently rotating wheels are disturbed and deflected laterally, the lateral wheel-rail contact force and the inclination angle work together to generate the wheel rotation torque, and the running gear reproduces the serpentine motion and can dynamically return to the right position; the lateral shock absorber device is used to suppress the shaking motion angle of the wheelset, so that the bogie has a stable automatic centering capability.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The present invention adopts independent rotating wheels, and the kingpin axes on the left and right sides are set to the same inclination angle. The independent rotating wheels and the guide arm beams on both sides are hinged by transverse rods to achieve simultaneous steering. By setting the inclination angle, the running gear can be automatically centered on a straight track, and the radial position of the wheel can be automatically adjusted on a curved track, thereby improving the guiding performance of the independent rotating wheel running gear. The present invention not only greatly reduces the wheel tread wear, but also greatly improves the vehicle running stability.

[0019] 2. The present invention has a novel structure and can improve the straight-line centering and curve passing performance of vehicles with independently rotating wheels, thereby enhancing the safety of vehicle operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention has the following accompanying drawings:

[0021] FIG1 is a front view of an axle-bridge type self-steering independently rotating wheel running gear with an external axle box according to the present invention;

[0022] FIG2 is a left side view of the wheelset portion of the independently rotating wheel running gear of the present invention;

[0023] FIG. 3 is a top view of the independently rotatable wheel running gear of the present invention.

[0024] Description of reference numerals:

[0025] 1. Independently rotating wheels; 2. Axles; 3. Rolling bearings; 4. Guide swing arm beams; 5. Positioning plates; 6. Connecting plates; 7. Axle bridges; 8. Elastic suspension; 9. Side beams; 10. Cross beams; 11. Transverse rods; 12. Transverse shock absorbers; a. Kingpin axis; b. Vertical plumb line. DETAILED DESCRIPTION

[0026] In order to make the purpose, advantages and features of the present invention more obvious, a detailed description is given below in conjunction with the accompanying drawings and specific embodiments, but the present invention is not limited to these embodiments.

[0027] like Figure 1 and Figure 2 As shown, an axle-bridge type self-steering independently rotating wheel running part with an axle box externally mounted is characterized in that it includes: symmetrically arranged 4 independently rotating wheels 1, 4 half-axles 2, 8 rolling bearings 3, 4 guide swing arm beams 4, 4 positioning plates 5 and 4 connecting plates 6, 2 axle bridges 7, 8 elastic suspensions 8, 2 side beams 9, 2 cross beams 10, 2 transverse rods 11, and 2 transverse shock absorbers 12, each independently rotating wheel 1 is connected to a half-axle 2 through a rolling bearing 3, each half-axle 2 is fixedly connected to a guide swing arm beam 4, each guide swing arm beam 4 is connected to a positioning plate 5 by inserting bolts through upper and lower mounting holes, the guide swing arm beam 4 can rotate around the axis of the upper and lower mounting holes of the positioning plate 5, an angle adjustment hole and a positioning hole are arranged on the facade of each positioning plate 5, the connecting plate 6 is connected to the positioning plate 5 through the pin of the positioning hole, the positioning plate 5 is connected to the sliding groove on the connecting plate 6 through the angle adjustment hole, the axis of the upper and lower mounting holes of the positioning plate 5 is the main pin axis a, and the main pin axis a The angle formed with the vertical perpendicular line b is called the inclination angle. The kingpin axes at the left and right ends of the axle bridge are parallel to each other.

[0028] like Figure 1 and Figure 3As shown, the axle bridge 7 is a sunken guide frame structure, the positioning plate 5 is fixedly connected to the axle bridge 7 through a connecting plate 6, and two independently rotating wheels 1 are respectively connected to the left and right sides of the inside of the axle bridge guide frame through the positioning plate 5. Two elastic suspension mounting seats are provided on one side, and the side beam 9 is placed on the axle bridge 7 through an elastic suspension 8. The two side beams 9 are fixedly connected in parallel through two cross beams 10 in the middle. The two ends of the transverse rod 11 are respectively hinged to the front ends of the two guide swing arm beams 4. The transverse rod 11 and the two guide swing arm beams 4 form a four-bar linkage. The guide swing arm beams 4 on both sides can turn at the same time. The transverse rod 11 is connected to the axle bridge 7 through a transverse shock absorber 12.

[0029] In an embodiment of the present invention, the guide arm beams of the independently rotating wheels on the left and right sides are connected by a transverse rod, and the swinging motion of the left and right wheels is coupled, so that the independently rotating wheels can turn at the same time. After the independently rotating wheels are disturbed and laterally offset, the transverse wheel-rail contact force and the inclination angle work together to generate a wheel rotation torque, and the running gear reproduces the serpentine motion and can be dynamically corrected. At this time, the lateral damper device is used to suppress the swinging motion angle of the wheelset, so that the bogie has a stable automatic centering capability, reducing the wheel attack angle and wheel flange wear.

[0030] The present invention provides an axle-bridge type self-steering independently rotating wheel running gear with an external axle box, wherein the wheels can rotate independently and autonomously, and the wheels on both sides of the axle bridge can turn simultaneously. The inclination angle of the kingpin axis improves the self-steering performance of the independently rotating wheel system and improves the driving safety of the vehicle with the independently rotating wheel running gear.

[0031] The above is only the preferred implementation method of the present invention and cannot be used to limit the scope of this patent. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

[0032] The above disclosure is only a specific embodiment of the present invention, but the present invention is not limited thereto, and any changes that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. An axle-bridge type self-guided independently rotating wheel running gear with an external axle box, characterized in that: The invention comprises: 4 independently rotating wheels (1) arranged symmetrically, 4 half shafts (2), 8 rolling bearings (3), 4 guide swing arm beams (4), 4 positioning plates (5) and 4 connecting plates (6), 2 axle bridges (7), 8 elastic suspensions (8), 2 side beams (9), 2 cross beams (10), 2 transverse rods (11), and 2 transverse shock absorbers (12); Each of the independently rotatable wheels (1) is connected to one of the half shafts (2) via the rolling bearing (3); Each of the half-axles (2) is fixedly connected to one of the guide rotating arm beams (4); Each of the guide arm beams (4) is connected to one of the positioning plates (5) via two upper and lower mounting holes; the guide arm beam (4) can rotate around the axes of the upper and lower mounting holes of the positioning plate (5); the axes of the upper and lower mounting holes of the positioning plate (5) are the main pin axes, and the angle formed by the main pin axes and the vertical line is called the inclination angle, and the main pin axes on both sides of the axle bridge are parallel to each other; An angle adjustment hole and a positioning hole are provided on the vertical surface of each positioning plate (5); the angle adjustment hole of the positioning plate (5) is connected to the sliding groove on the connecting plate (6).

2. The axle-bridge type self-steering independent rotating wheel running gear with an external axle box according to claim 1 is characterized in that: The axle bridge (7) is a sunken guide frame structure, each of the positioning plates (5) is fixedly connected to the axle bridge (7) via a connecting plate (6), and the two independently rotating wheels (1) are respectively connected to the left and right sides of the inside of the axle bridge guide frame via the positioning plates (5), and each guide frame is provided with four elastic suspension mounting seats.

3. The axle-bridge type self-steering independent rotating wheel running gear with an external axle box according to claim 2 is characterized in that: The side beam (9) is placed on the elastic suspension mounting seat of the axle bridge (7) via the elastic suspension (8), and the two side beams (9) are fixedly connected in parallel via the two cross beams (10) in the middle.

4. The axle-bridge type self-steering independent rotating wheel running gear with an external axle box according to claim 3 is characterized in that: The two ends of the transverse rod (11) are respectively hinged to the front ends of the two guide arm beams (4); the transverse rod (11) and the two guide arm beams (4) form a four-bar linkage, and the independently rotating wheels (1) on both sides are turned simultaneously through the transverse rod; the transverse rod (11) is connected to the axle bridge (7) through one transverse damper (12).

5. The axle-bridge type self-steering independent rotating wheel running gear with an external axle box according to claim 1, characterized in that: Each of the guide rotating arm beams (4) is connected to one of the positioning plates (5) via bolts.

6. The axle-bridge type self-steering independent rotating wheel running gear with an external axle box according to claim 1, characterized in that: The angle adjustment hole of the positioning plate (5) and the slide groove on the connecting plate (6) are connected by bolts.

7. A locomotive vehicle, characterized in that: It comprises an axle-bridge type self-guided independently rotating wheel running gear with an external axle box as described in any one of claims 1-6.

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