CN114475084A

CN114475084A - Vehicle running gear, vehicle and vehicle running system

Info

Publication number: CN114475084A
Application number: CN202210152841.9A
Authority: CN
Inventors: 张金虎
Original assignee: Beijing Jingdong Qianshi Technology Co Ltd
Current assignee: Beijing Jingdong Qianshi Technology Co Ltd
Priority date: 2022-02-18
Filing date: 2022-02-18
Publication date: 2022-05-13
Anticipated expiration: 2042-02-18
Also published as: CN114475084B

Abstract

The invention relates to a vehicle running gear, a vehicle and a vehicle running system, wherein the vehicle running gear is used for running on a track (30), the vehicle running gear comprises a vehicle frame (10) and a wheel (20), the wheel (20) is rotatably arranged on the vehicle frame (10), the rotating axis of the wheel (20) is inclined relative to a running plane provided by the track (30), so that the wheel (20) is simultaneously contacted with two guide surfaces with included angles of the track (30) to realize the guide effect on the vehicle running gear. The vehicle includes a vehicle running gear. The vehicle running system includes a vehicle and a track (30). The wheels are the travelling wheels and the guide wheels, so that the guide wheels specially used for guiding are omitted, the problem that the wrench is shielded by the rail can be effectively solved during maintenance, and the convenience of operation is improved.

Description

Vehicle running gear, vehicle and vehicle running system

Technical Field

The invention relates to the technical field of vehicles, in particular to a vehicle running device, a vehicle and a vehicle running system.

Background

At present, wheel trains of shuttle vehicles are all plane rubber-coated wheels, and the circumferential side surfaces of the wheels are vertical to the contact surface of a track. When the shuttle car travels, two groups of guide wheels are arranged on one side of the car body for guiding, and the two groups of guide wheels clamp the edge of the track. The disadvantage of this arrangement is that the wrench is shielded from the track during maintenance and is not easily handled.

It is noted that the information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information constitutes prior art already known to a person skilled in the art.

Disclosure of Invention

The embodiment of the invention provides a vehicle traveling device, a vehicle and a vehicle traveling system, which effectively solve the problem that a wrench is shielded by a rail during maintenance.

According to a first aspect of the present invention, there is provided a vehicle running device for running on a rail, the vehicle running device comprising:

a frame; and

the wheels are rotatably arranged on the frame, and the rotating axes of the wheels are inclined relative to the running plane provided by the track, so that the wheels are simultaneously contacted with two guide surfaces with included angles of the track, and the guide effect on the vehicle running device is realized.

In some embodiments, the wheel comprises a wheel body and a wrapping layer arranged on the circumferential side surface of the wheel body, the outer contour of a tangent plane of the wrapping layer passing through the rotation axis of the wheel is arc-shaped, and the wrapping layer is used for contacting two guide surfaces with included angles of the track.

In some embodiments, the frame has a first center line parallel to the running direction of the vehicle running gear, and the wheel includes a first portion on a side of its rotational axis remote from the rail and a second portion on a side of its rotational axis close to the rail, the distance between the first portion and the first center line being smaller than the distance between the second portion and the first center line.

In some embodiments, the frame has a first center line parallel to a running direction of the vehicle running gear, and the vehicle running gear includes two wheels arranged on both sides of the frame axisymmetrically with respect to the first center line.

In some embodiments, the vehicle running device further comprises a driving member mounted on the frame, a first rotating shaft, a transmission assembly and a second rotating shaft, the wheels comprise first wheels, the driving member is in driving connection with the first rotating shaft, the transmission assembly is connected between the first rotating shaft and the second rotating shaft, the second rotating shaft is connected with the first wheels, the driving member drives the first rotating shaft to rotate relative to the frame, and the transmission assembly drives the second rotating shaft and the first wheels to rotate relative to the frame.

In some embodiments, the frame has a first centerline parallel to the direction of travel of the vehicle running gear, the axis of the first axle is perpendicular to the first centerline, and the axis of the second axle is oblique to the plane of travel provided by the track.

In some embodiments, the drive assembly includes a first drive belt mounted on the first pulley, the transition assembly, and the second pulley, a first pulley mounted on the first shaft, a second pulley mounted on the second shaft, and a transition assembly mounted on the frame.

In some embodiments, the transition assembly includes a third pulley and a fourth pulley mounted to the frame, and the first drive belt passes around the first pulley, the third pulley, the second pulley, and the fourth pulley in sequence.

In some embodiments, the axis of the third pulley and the axis of the fourth pulley are collinear.

In some embodiments, the axis of the third pulley and the axis of the fourth pulley are collinear and perpendicular to the axis of the first shaft.

In some embodiments, the frame includes a first mounting plate perpendicular to a traveling direction of the vehicle traveling device and a second mounting plate parallel to the traveling direction of the vehicle traveling device, the driving member and the first rotating shaft are mounted on the first mounting plate, and the second rotating shaft and the first wheel are mounted on the second mounting plate.

In some embodiments, the vehicle running device further comprises a first mounting seat, the first mounting seat is mounted on the outer side of the frame, the second rotating shaft is rotatably mounted on the first mounting seat, one end of the second rotating shaft, which is far away from the frame, extends out of the first mounting seat and is connected with the first wheel, and a first end face, which is far away from the frame, of the first mounting seat and a second end face, which is close to the frame, of the first wheel are parallel to each other and have a preset gap.

In some embodiments, the vehicle running device further includes a first bearing disposed between the first mounting seat and the second rotating shaft, and the second rotating shaft is provided with a first boss configured to limit movement of the first bearing in an axial direction of the second rotating shaft and to form a predetermined gap between the first end surface and the second end surface.

In some embodiments, the vehicle running gear further comprises a third rotating shaft mounted to the frame, an axis of the third rotating shaft is arranged obliquely with respect to a running plane provided by the rail, and the wheel comprises a second wheel mounted to the third rotating shaft, and the second wheel rotates around the axis of the third rotating shaft along with the movement of the frame.

According to a second aspect of the present invention, there is provided a vehicle including the vehicular running device described above.

According to a third aspect of the present invention, there is provided a vehicle running system comprising a track and the vehicle described above.

In some embodiments, the track includes a first guide surface and a second guide surface having an included angle therebetween, the wheel being capable of simultaneously contacting the first guide surface and the second guide surface.

Based on the technical scheme, in the embodiment provided by the invention, the rotation axis of the wheel is inclined relative to the running plane provided by the track, so that the wheel can be simultaneously contacted with two guide surfaces with included angles of the track when running on the track, and the guide effect on the vehicle running device is realized.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:

fig. 1 is a front view of one embodiment of the vehicle running system of the present invention.

Fig. 2 is a schematic structural view of one embodiment of the vehicle running system of the present invention.

Fig. 3 is a schematic structural view of one embodiment of the vehicular running device of the invention.

Fig. 4 is a partial structural view of one embodiment of the vehicular running device of the invention.

Fig. 5 is a top view of the embodiment of fig. 4.

Fig. 6 is a cross-sectional view taken along section a-a in the embodiment of fig. 5.

Fig. 7 is an enlarged view of the portion indicated by reference character a1 in the embodiment of fig. 6.

Fig. 8 is a front view of the embodiment of fig. 4.

Fig. 9 is a cross-sectional view taken along section B-B of the embodiment of fig. 8.

Fig. 10 is an enlarged view of a portion indicated by reference numeral B1 in the embodiment of fig. 9.

FIG. 11 is a schematic view showing the construction of a transmission assembly according to an embodiment of the running gear for vehicles of the present invention.

Fig. 12 is a schematic structural view of a first belt in one embodiment of the vehicular running device of the present invention.

Fig. 13 is a schematic view showing the mounting structure of the second wheel in one embodiment of the running gear for a vehicle according to the present invention.

Fig. 14 is a front view showing a mounting structure of a second wheel in one embodiment of the running gear for a vehicle of the invention.

Fig. 15 is a cross-sectional view taken along section C-C of the embodiment of fig. 14.

Fig. 16 is an enlarged view of the portion indicated by reference character C1 in the embodiment of fig. 15.

In the figure:

10. a frame; 11. a first mounting plate; 12. a second mounting plate; 13. a third mounting plate;

20. a wheel; 21. a first wheel; 211. a first wheel body; 212. a first wrapping layer; 22. a second wheel; 221. a second wheel body; 222. a second wrapping layer; 23. a third wheel; 24. a fourth wheel;

30. a track; 31. a first guide surface; 32. a second guide surface;

40. a drive member; 41. a driving wheel; 42. a driven wheel; 43. a second belt; 44. a support;

50. a first rotating shaft; 51. a third mounting seat;

60. a transmission assembly; 61. a first drive belt; 62. a first pulley; 63. a second pulley; 64. a third belt pulley; 65. a fourth pulley; 66. a third screw; 67. installing a shaft; 68. a third bearing; 69. a tensioning sleeve;

70. a second rotating shaft; 701. a first boss; 71. a first mounting seat; 72. a first bearing; 73. a first connecting key; 74. a first screw; 75. a first gasket; 76. a third spacer ring; 77. a first spacer ring;

80. a third rotating shaft; 801. a second boss; 81. a second mounting seat; 82. a second bearing; 83. a second connecting key; 84. a second screw; 85. a second gasket; 86. an end cap; 87. and a second spacer ring.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments. It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "central," "lateral," "longitudinal," "front," "rear," "left," "right," "upper," "lower," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings, which are based on the orientations and positional relationships indicated in the drawings, and are used for convenience in describing the present invention and to simplify the description, but are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore should not be construed as limiting the scope of the present invention.

As shown in fig. 1, in some embodiments of the vehicle running gear provided in the present invention, the vehicle running gear is configured to run on a rail 30, the vehicle running gear includes a frame 10 and a wheel 20, the wheel 20 is rotatably mounted on the frame 10, and a rotation axis of the wheel 20 is inclined with respect to a running plane provided by the rail 30, so that the wheel 20 simultaneously contacts with two angled guide surfaces of the rail 30 to realize a guiding function for the vehicle running gear.

In the above embodiment provided by the present invention, the rotation axis of the wheel 20 is inclined relative to the traveling plane provided by the rail 30, so that the wheel 20 can simultaneously contact with two guide surfaces with included angles of the rail 30 when traveling on the rail 30, and the guiding function of the vehicle traveling device is realized, therefore, the wheel 20 is not only a traveling wheel, but also a guide wheel, so that a guide wheel specially used for guiding is omitted, and the overall structure of the traveling device is greatly simplified; also need not to make two sets of leading wheels centre gripping orbital edge like in the correlation technique, consequently when the maintenance, can effectively solve the spanner and be sheltered from the problem by the track, improve the convenience of operation.

As shown in fig. 1, the rail 30 includes a first guide surface 31 and a second guide surface 32, the first guide surface 31 and the second guide surface 32 have an included angle therebetween, and the wheel 20 can simultaneously contact the first guide surface 31 and the second guide surface 32.

When the vehicle running device is placed on the rail 30, the wheel 20 is simultaneously in contact with the first guide surface 31 and the second guide surface 32, and the first guide surface 31 and the second guide surface 32 have an included angle therebetween, that is, the first guide surface 31 and the second guide surface 32 are non-parallel and non-coplanar, so that the wheel 20 can be guided by the simultaneous contact of the first guide surface 31 and the second guide surface 32 with the wheel 20.

The angle between the first guide surface 31 and the second guide surface 32 may be acute, right or obtuse. In the embodiment shown in fig. 1, the angle between the first guide surface 31 and the second guide surface 32 is a right angle. The first guide surface 31 is parallel to the plane of travel provided by the track 30 and the second guide surface 32 is perpendicular to the plane of travel provided by the track 30.

As shown in fig. 2, a plane F formed by the first guide surfaces 31 of the two rails 30 is a traveling plane provided by the rails 30. In fig. 2, the straight line L is a symmetrical line located between the two rails 30, and is also the first center line of the frame 10.

In some embodiments, the wheel 20 comprises a wheel body and a wrapping layer disposed on a circumferential side surface of the wheel body, an outer contour of a tangent plane of the wrapping layer passing through the rotational axis of the wheel 20 is arc-shaped, and the wrapping layer is used for contacting two angled guide surfaces of the rail 30. This has the advantage of making the coating thicker and improving the cushioning properties of the wheel 20.

The wrapping layer may be made of a rubber material to improve the cushioning properties of the wheel 20.

Referring to fig. 7 and 16, the wheel body is provided with a wrapping layer on the periphery, and the outer periphery of the wrapping layer is arc-shaped.

In some embodiments, the frame 10 has a first centerline parallel to the running direction of the vehicle running gear, and the wheel 20 includes a first portion on a side of its rotational axis remote from the rail 30 and a second portion on a side of its rotational axis close to the rail 30, the distance between the first portion and the first centerline being smaller than the distance between the second portion and the first centerline.

The arrangement can enable the wheel 20 to incline relative to the frame 10 from top to bottom in a direction far away from the frame 10, which is beneficial to increasing the supporting area of the lower part of the wheel 20 and improving the running stability of the vehicle.

In some embodiments, the frame 10 has a first center line parallel to a running direction of the vehicle running gear, and the vehicle running gear includes two wheels 20, and the two wheels 20 are disposed on both sides of the frame 10 axisymmetrically with respect to the first center line. By arranging the two wheels 20 on both sides of the frame 10 axisymmetrically with respect to the first center line, the balance and stability of the vehicle can be effectively improved.

As shown in fig. 2, the vehicle running device includes four wheels 20, which are respectively provided on both sides of the frame 10. Two wheels 20 are provided on each side of the frame 10.

As shown in fig. 3 to 7, in some embodiments, the vehicle traveling apparatus further includes a driving member 40 mounted on the frame 10, a first rotating shaft 50, a transmission assembly 60, and a second rotating shaft 70, the wheel 20 includes a first wheel 21, the driving member 40 is in driving connection with the first rotating shaft 50, the transmission assembly 60 is connected between the first rotating shaft 50 and the second rotating shaft 70, the second rotating shaft 70 is connected with the first wheel 21, the driving member 40 drives the first rotating shaft 50 to rotate relative to the frame 10, and the transmission assembly 60 drives the second rotating shaft 70 and the first wheel 21 to rotate relative to the frame 10.

The driving member 40 may be a reduction motor, an oil cylinder, an air cylinder, or the like. The driving member 40 drives the first rotating shaft 50 to rotate relative to the frame 10, the transmission assembly 60 can transmit the rotating force of the first rotating shaft 50 to the second rotating shaft 70, and the second rotating shaft 70 can drive the first wheel 21 to rotate, so as to achieve the purpose of walking. The first wheels 21 are powered drive wheels.

In some embodiments, the frame 10 has a first centerline parallel to the running direction of the vehicle running gear, the axis of the first rotating shaft 50 is perpendicular to the first centerline, and the axis of the second rotating shaft 70 is inclined with respect to the running plane provided by the rail 30.

The technical scheme that can be realized by the arrangement is as follows: two ends of the first rotating shaft 50 are respectively connected with a second rotating shaft 70, and each second rotating shaft 70 is connected with one first wheel 21, so that two first wheels 21 are driven to rotate simultaneously through the first rotating shaft 50.

As shown in fig. 8-12, in some embodiments, the transmission assembly 60 includes a first transmission belt 61, a first pulley 62 mounted on the first rotating shaft 50, a second pulley 63 mounted on the second rotating shaft 70, and a transition assembly mounted to the frame 10, the first transmission belt 61 being mounted on the first pulley 62, the transition assembly, and the second pulley 63.

The rotational force of the first rotation shaft 50 can be transmitted to the second rotation shaft 70 through the first transmission belt 61.

The structural form of the transition component can be selected in many ways.

In some embodiments, the transition assembly includes a third pulley 64 and a fourth pulley 65 mounted to the frame 10, and the first drive belt 61 passes around the first pulley 62, the third pulley 64, the second pulley 63, and the fourth pulley 65 in sequence.

In some embodiments, the axis of the third pulley 64 and the axis of the fourth pulley 65 are collinear.

In some embodiments, the axis of the third pulley 64 and the axis of the fourth pulley 65 are collinear and perpendicular to the axis of the first shaft 50. This arrangement ensures effective transmission of the first belt 61 and running stability of the first belt 61.

In some embodiments, the frame 10 is provided with a mounting shaft 67, the axis of the mounting shaft 67 is parallel to the first centerline, the third pulley 64 and the fourth pulley 65 are movably mounted on the mounting shaft 67, and the third pulley 64 and the fourth pulley 65 have a predetermined distance therebetween.

In some embodiments, frame 10 includes a first mounting plate 11 and a second mounting plate 12, first mounting plate 11 is perpendicular to the direction of travel of the vehicle running gear, second mounting plate 12 is parallel to the direction of travel of the vehicle running gear, drive member 40 and first shaft 50 are mounted on first mounting plate 11, and second shaft 70 and first wheel 21 are mounted on second mounting plate 12.

In some embodiments, the vehicle traveling device further includes a first mounting seat 71, the first mounting seat 71 is mounted on an outer side of the frame 10, the second rotating shaft 70 is rotatably mounted on the first mounting seat 71, an end of the second rotating shaft 70 far away from the frame 10 extends out of the first mounting seat 71 and is connected to the first wheel 21, and a first end surface of the first mounting seat 71 far away from the frame 10 and a second end surface of the first wheel 21 close to the frame 10 are parallel to each other and have a predetermined gap.

The first mounting seat 71 is arranged to support the second rotating shaft 70. The first end surface and the second end surface have a predetermined gap therebetween, which prevents the first wheel 21 from being worn away from the first mounting seat 71 when rotating relative to the first mounting seat 71.

In some embodiments, the vehicle running device further includes a first bearing 72, the first bearing 72 is disposed between the first mounting seat 71 and the second rotating shaft 70, the second rotating shaft 70 is provided with a first boss 701, and the first boss 701 is configured to limit the movement of the first bearing 72 in the axial direction of the second rotating shaft 70 and to form a predetermined gap between the first end face and the second end face.

The first boss 701 extends from the outer circumferential surface of the second rotation shaft 70 in a direction away from the axis of the second rotation shaft 70.

The first boss 701 has a dual function of preventing the first bearing 72 from moving axially and forming a predetermined gap between the first end surface and the second end surface.

As shown in fig. 13 to 16, in some embodiments, the vehicle running device further includes a third rotating shaft 80 mounted to the frame 10, an axis of the third rotating shaft 80 is disposed obliquely with respect to a running plane provided by the rail 30, the wheel 20 includes a second wheel 22, the second wheel 22 is mounted to the third rotating shaft 80, and the second wheel 22 rotates about the axis of the third rotating shaft 80 in accordance with the movement of the frame 10. The second wheel 22 is a follower wheel.

Based on the vehicle running gear in each embodiment, the invention further provides a vehicle, which comprises the vehicle running gear.

The invention also provides a vehicle running system which comprises the track 30 and the vehicle.

In some embodiments, the track 30 comprises a first guiding surface 31 and a second guiding surface 32, the first guiding surface 31 and the second guiding surface 32 having an included angle therebetween, and the wheel 20 is capable of simultaneously contacting the first guiding surface 31 and the second guiding surface 32.

The structure and operation of the embodiment of the vehicle running gear and the vehicle running system of the present invention will be described with reference to fig. 1 to 16:

2-3 deep groove ball bearing and flat key

As shown in fig. 1, the vehicle running system includes a vehicle frame 10, a wheel 20, and a rail 30, a rotation axis of the wheel 20 being disposed obliquely with respect to the vehicle frame 10, the rail 30 including a first guide surface 31 and a second guide surface 32 perpendicular to each other, a bottom portion of the wheel 20 being in contact with the first guide surface 31, and a side surface of the wheel 20 being in contact with the second guide surface 32.

As shown in fig. 2, the first guide surfaces 31 of the two rails 30 form a plane F, and the vehicle body frame 10 has a first center line L parallel to the traveling direction of the vehicle traveling device. The wheels 20 include a first wheel 21, a second wheel 22, a third wheel 23, and a fourth wheel 24, the first wheel 21 and the second wheel 22 being disposed on a first side of the frame 10, the third wheel 23 and the fourth wheel 24 being disposed on a second side of the frame 10, the first wheel 21 and the third wheel 23 being disposed axisymmetrically about a first centerline, the second wheel 22 and the fourth wheel 24 being disposed axisymmetrically about the first centerline.

As shown in fig. 3, the vehicle frame 10 includes a first frame body for mounting the first wheel 21 and the third wheel 23, and a second frame body for mounting the second wheel 22 and the fourth wheel 24, and the first frame body is provided with a driving member 40 and a first rotating shaft 50.

As shown in fig. 4, the first frame body includes a first mounting plate 11, a second mounting plate 12 and a third mounting plate 13, and the second mounting plate 12 and the third mounting plate 13 are respectively connected to both sides of the first mounting plate 11. The first mounting plate 11 is perpendicular to the first centre line and the second mounting plate 12 and the third mounting plate 13 are both parallel to the first centre line. The extended end of the driving shaft of the driving member 40 is provided with a driving wheel 41, the periphery of the first rotating shaft 50 is provided with a driven wheel 42, and the second transmission belt 43 is sleeved on the driving wheel 41 and the driven wheel 42 and is used for transmitting the power of the driving wheel 41 to the driven wheel 42.

Two third installation seats 51 are arranged on the first installation plate 11, and the first rotating shaft 50 is rotatably installed on the two third installation seats 51. The two ends of the first rotating shaft 50 are respectively in power connection with the first wheel 21 and the third wheel 23 through a transmission assembly 60.

As shown in fig. 5, 6 and 7, the mounting structure provided on the second mounting plate 12 for mounting the first wheel 21 is the same as the mounting structure provided on the third mounting plate 13 for mounting the third wheel 23. Next, a specific structure of the mounting structure will be described by taking the second mounting plate 12 as an example.

The first mounting plate 11, the second mounting plate 12 and the third mounting plate 13 are fixed parts, are all fixedly mounted on the frame 10, and carry the whole driving wheel system to be fixed on the frame 10. The first shaft 50 is fixed on the first mounting plate 11 through two sets of third mounting seats 51, and the first shaft 50 can rotate relative to the third mounting seats 51. The driving member 40 is mounted on the first mounting plate 11 through a bracket 44, the driving wheel 41 is mounted on an output shaft of the driving member 40 through a flat key and a jack screw, the driven wheel 42 is mounted on the first rotating shaft 50 through a tensioning sleeve, and the second transmission belt 43 bypasses the driving wheel 41 and the driven wheel 42 for transmitting power.

The first mounting seat 71 is fixed on the second mounting plate 12 by screws, two first bearings 72 are arranged in the first mounting seat 71, and the first bearings 72 can be deep groove ball bearings. The surface of the first mounting seat 71 that contacts the second mounting plate 12 is parallel to the side surface of the second mounting plate 12, the surface of the first mounting seat 71 that is away from the second mounting plate 12 is inclined with respect to the side surface of the second mounting plate 12, and the axis of the first wheel 21 is inclined with respect to the horizontal plane by this inclined surface. The inner races of the two first bearings 72 are separated by a first spacer 77. The second rotating shaft 70 is installed in the inner ring of the first bearing 72, the first boss 701 on the second rotating shaft 70 blocks the end face of the inner ring of the right first bearing 72, and the left end of the second rotating shaft 70 is used for installing the second belt pulley 63. A third spacer ring 76 is provided between the inner ring end surface of the left first bearing 72 and the second pulley 63. The first wheel 21 is attached to the right side of the second rotating shaft 70 through a first connecting key 73, and is locked on the end surface by a first screw 74 and a first washer 75.

The first wheel 21 includes a first wheel body 211 and a first wrapping layer 212, and the first wrapping layer 212 wraps the periphery of the first wheel body 211. The outer profile of the first wrapping layer 212 is arcuate.

The transmission assembly 60 includes a first transmission belt 61, a first pulley 62, a second pulley 63, a third pulley 64 and a fourth pulley 65, the first transmission belt 61 may be a belt, two sets of the first pulleys 62 are respectively fixed at two ends of the first rotating shaft 50 through a tensioning sleeve 69, and the second pulley 63 is mounted at one end of the second rotating shaft 70 inside the frame 10 through a screw. The third pulley 64 and the fourth pulley 65 are mounted to the frame 10. The first drive belt 61 is trained around a first pulley 62, a third pulley 64, a second pulley 63 and a fourth pulley 65 for angled transmission of power. Therefore, the power of the driving member 40 is transmitted to the first rotating shaft 50 to drive the first belt pulley 62 thereon to rotate, and then the power is finally transmitted to the second rotating shaft 70 through the first belt pulley 61, so that the rotation of the first wheel 21 and the third wheel 23 of the drum-type rubber covered wheel is realized.

As shown in fig. 8 to 12, the mounting shaft 67 is mounted on the first mounting plate 11, and is provided with a third pulley 64 and a fourth pulley 65, the third pulley 64 and the fourth pulley 65 rotate in opposite directions, the third pulley 64 and the fourth pulley 65 are respectively connected to the mounting shaft 67 through a third bearing 68, the inner races of the third pulley 64 and the fourth pulley 65 are separated by a spacer, and the outer side of the mounting shaft 67 is locked to the inner race end faces by a third screw 66 and a washer.

As shown in fig. 12, in a state where the first belt 61 passes around the first pulley 62, the second pulley 63, the third pulley 64, and the fourth pulley 65, the first belt 61 may be extended tangentially from each pulley and enter the next pulley tangentially by the first pulley 62, the second pulley 63, the third pulley 64, and the fourth pulley 65.

As shown in fig. 13 to 16, the mounting structure of the second wheel 22 and the fourth wheel 24 is shown. Taking the second wheel 22 as an example, the mounting structure is different from the mounting structure of the first wheel 21 and the third wheel 23 in that the driving element 40, the first rotating shaft 50 and the transmission assembly 60 are not provided between the second wheel 22 and the fourth wheel 24. The second wheel 22 and the fourth wheel 24 rotate with the movement of the frame 10.

The second mounting seat 81 is fixed on the second mounting plate 12 through screws, two second bearings 82 are arranged in the second mounting seat 81, and inner rings of the second bearings 82 are separated through a second spacer 87. The third shaft 80 is installed in the inner ring of the second bearing 82, the second boss 801 on the third shaft 80 blocks the end face of the inner ring of the right second bearing 82, the left end of the third shaft 80 is connected with the end cover 86, and the end cover 86 presses the end face of the inner ring of the left second bearing 82 at the same time, so that the third shaft 80 and the inner rings of the two second bearings 82 are fixed together and can rotate together with the inner rings. The second wheel 22 is attached to the right side of the third rotating shaft 80 by a second connecting key 83, and is locked on the end face by a second screw 84 and a second washer 85. The second bearing 82 may be a deep groove ball bearing. The surface of the second mounting seat 81 that contacts the second mounting plate 12 is parallel to the side surface of the second mounting plate 12, the surface of the second mounting seat 81 that is away from the second mounting plate 12 is inclined with respect to the side surface of the second mounting plate 12, and the axis of the second wheel 22 is inclined with respect to the horizontal plane by this inclined surface.

The second wheel 22 includes a second wheel body 221 and a second wrapping layer 222, and the second wrapping layer 222 wraps the outer periphery of the second wheel body 221. The outer contour of the second wrapping layer 222 is curved.

In the embodiment, the inclined traveling wheel train is additionally provided with the drum-shaped rubber covered wheel with the arc surface, so that the wheel can normally travel forwards and backwards and can play a role in guiding.

This embodiment has cancelled the leading wheel, can reduce cost, reduces the maintenance degree of difficulty simultaneously. Moreover, the whole vehicle can be directly lifted upwards from the track surface, the surface of a maintenance vehicle or a spare vehicle frame without the limitation of guide wheels, and the phenomenon that the whole vehicle can only be drawn outwards from the track direction is avoided.

The wheels are drum-shaped wheels and are arranged in an inclined mode. On one hand, the drum-shaped wheel wrapping rubber is thicker, the elastic buffer performance is better, and the displacement of the container due to vibration is avoided; on the other hand, the drum-shaped wheel is contacted with two surfaces of straight edges and corners of the track, so that the walking and the guiding are combined into a whole.

The whole driving form adopts belt flexible driving, can realize the transmission that the speed reducer output shaft has certain contained angle with the drum-shaped rubber-coated wheel axle that the slope was arranged, also makes starting and braking can be softer.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention and not to limit it; although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art will understand that: modifications to the specific embodiments of the invention or equivalent substitutions for parts of the technical features may be made without departing from the principles of the invention, and these modifications and equivalents are intended to be included within the scope of the claims.

Claims

1. A vehicle running gear for running on a track (30), comprising:

a frame (10); and

the wheel (20) is rotatably arranged on the vehicle frame (10), and the rotating axis of the wheel (20) is inclined relative to the running plane provided by the track (30), so that the wheel (20) is simultaneously contacted with two guide surfaces with included angles of the track (30) to realize the guide effect on the vehicle running gear.

2. The vehicle running gear according to claim 1, wherein the wheel (20) comprises a wheel body and a wrapping layer arranged on a circumferential side surface of the wheel body, an outer contour of a tangent plane of the wrapping layer passing through a rotation axis of the wheel (20) is arc-shaped, and the wrapping layer is used for contacting two guide surfaces with included angles of the rail (30).

3. The vehicle running gear according to claim 1, wherein the vehicle frame (10) has a first center line parallel to a running direction of the vehicle running gear, and the wheel (20) includes a first portion on a side of a rotational axis thereof remote from the rail (30) and a second portion on a side of the rotational axis thereof close to the rail (30), a distance between the first portion and the first center line being smaller than a distance between the second portion and the first center line.

4. The vehicle running gear according to claim 1, characterized in that the frame (10) has a first center line parallel to a running direction of the vehicle running gear, and the vehicle running gear comprises two wheels (20), and the two wheels (20) are arranged on both sides of the frame (10) axisymmetrically with respect to the first center line.

5. The vehicle running device according to any one of claims 1 to 4, further comprising a driving member (40) mounted on the frame (10), a first rotating shaft (50), a transmission assembly (60) and a second rotating shaft (70), wherein the wheel (20) comprises a first wheel (21), the driving member (40) is in driving connection with the first rotating shaft (50), the transmission assembly (60) is connected between the first rotating shaft (50) and the second rotating shaft (70), the second rotating shaft (70) is connected with the first wheel (21), the driving member (40) drives the first rotating shaft (50) to rotate relative to the frame (10), and the transmission assembly (60) drives the second rotating shaft (70) and the first wheel (21) to rotate relative to the frame (10).

6. Vehicle running gear according to claim 5, characterized in that the frame (10) has a first centre line parallel to the running direction of the vehicle running gear, the axis of the first axle (50) being perpendicular to the first centre line, and the axis of the second axle (70) being inclined with respect to the running plane provided by the rail (30).

7. The vehicle running gear according to claim 5, wherein the transmission assembly (60) comprises a first transmission belt (61), a first pulley (62) mounted on the first rotating shaft (50), a second pulley (63) mounted on the second rotating shaft (70), and a transition assembly mounted on the frame (10), the first transmission belt (61) being mounted on the first pulley (62), the transition assembly, and the second pulley (63).

8. The vehicle running gear according to claim 7, wherein the transition assembly comprises a third pulley (64) and a fourth pulley (65) mounted to the frame (10), the first drive belt (61) being passed around the first pulley (62), the third pulley (64), the second pulley (63) and the fourth pulley (65) in this order.

9. The vehicle running gear according to claim 8, wherein an axis of the third pulley (64) and an axis of the fourth pulley (65) are collinear.

10. The vehicle running gear according to claim 8, wherein an axis of the third pulley (64) and an axis of the fourth pulley (65) are collinear and perpendicular to an axis of the first rotating shaft (50).

11. The vehicle running gear according to claim 5, wherein the vehicle frame (10) includes a first mounting plate (11) and a second mounting plate (12), the first mounting plate (11) is perpendicular to a running direction of the vehicle running gear, the second mounting plate (12) is parallel to the running direction of the vehicle running gear, the driving member (40) and the first rotating shaft (50) are mounted on the first mounting plate (11), and the second rotating shaft (70) and the first wheel (21) are mounted on the second mounting plate (12).

12. The vehicle running gear according to claim 5, further comprising a first mounting seat (71), wherein the first mounting seat (71) is mounted on the outer side of the frame (10), the second rotating shaft (70) is rotatably mounted on the first mounting seat (71), one end of the second rotating shaft (70) far away from the frame (10) extends out of the first mounting seat (71) and is connected with the first wheel (21), and a first end face of the first mounting seat (71) far away from the frame (10) and a second end face of the first wheel (21) near the frame (10) are parallel to each other and have a predetermined gap.

13. The vehicle running device according to claim 12, further comprising a first bearing (72), wherein the first bearing (72) is provided between the first mounting seat (71) and the second rotating shaft (70), wherein the second rotating shaft (70) is provided with a first boss (701), and wherein the first boss (701) is configured to restrict the first bearing (72) from moving in an axial direction of the second rotating shaft (70) and to form a predetermined gap between the first end surface and the second end surface.

14. The vehicle running gear according to claim 1, further comprising a third rotating shaft (80) mounted to the vehicle frame (10), wherein an axis of the third rotating shaft (80) is disposed obliquely with respect to a running plane provided by the rail (30), and wherein the wheel (20) comprises a second wheel (22), and wherein the second wheel (22) is mounted to the third rotating shaft (80), and wherein the second wheel (22) rotates about the axis of the third rotating shaft (80) in accordance with the movement of the vehicle frame (10).

15. A vehicle according to any one of claims 1 to 14, characterized by comprising a vehicle running gear.

16. A vehicle running system, comprising a track (30) and a vehicle according to claim 15.

17. Vehicle running system according to claim 16, wherein the track (30) comprises a first guide surface (31) and a second guide surface (32), the first guide surface (31) and the second guide surface (32) having an angle therebetween, the wheel (20) being capable of simultaneously contacting the first guide surface (31) and the second guide surface (32).