CN113968255B

CN113968255B - Bogie and rail vehicle

Info

Publication number: CN113968255B
Application number: CN202010717512.5A
Authority: CN
Inventors: 杨怡; 谭志成
Original assignee: BYD Co Ltd
Current assignee: BYD Co Ltd
Priority date: 2020-07-23
Filing date: 2020-07-23
Publication date: 2023-04-07
Anticipated expiration: 2040-07-23
Also published as: CN113968255A

Abstract

The invention belongs to the technical field of railway vehicles, and particularly relates to a bogie and a railway vehicle. The bogie provided by the invention comprises the traveling wheels, the guide frame and the traveling mechanisms, wherein the two traveling mechanisms are provided, the swing arms of the two traveling mechanisms are separately arranged, so that the two traveling mechanisms are separately arranged and do not influence each other, in this way, the two traveling wheels connected with the two traveling mechanisms are mutually independent, and when the two sides of the track are positioned on different planes, the two traveling wheels are displaced in the vertical direction and do not influence each other, so that the influence of the uneven track on the track vehicle is reduced, the vibration of the track vehicle is reduced, and the comfort is improved. Meanwhile, the running mechanism is connected with the vehicle body, and an axle does not need to be arranged on the guide frame, so that the weight of the guide frame is reduced.

Description

Bogie and rail vehicle

Technical Field

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

Background

Existing railway vehicles have a part of vehicles which need to run on a double track. The rail vehicle of the type comprises a left traveling wheel and a right traveling wheel, wherein the left traveling wheel and the right traveling wheel respectively travel on a left rail and a right rail of a double rail, and are limited by processing and process limitations of the double rail, the left rail and the right rail are difficult to be ensured on the same plane, and the vehicle is greatly vibrated in the running process of the rail vehicle, so that the comfort is poor.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: the method is limited by the processing and process limitations of the double rails, and the parallelism of the rails on the two sides is difficult to guarantee, so that the technical problems of large vehicle vibration and poor comfort caused in the running process of the rail vehicle are solved.

To solve the above technical problem, an embodiment of the present invention provides a bogie for a railway vehicle, including:

a running wheel;

a guide frame;

the multi-link mechanism is connected with the guide frame and the walking wheels; and

the walking mechanism comprises a steering yoke and a swing arm, the steering yoke is rotationally connected with a hub assembly of the walking wheel, one end of the swing arm is rotationally connected with the steering yoke, and the other end of the swing arm is rotationally connected with the vehicle body;

the walking mechanism and the walking wheels are respectively provided with two walking mechanisms, the two walking mechanisms are respectively arranged corresponding to the two walking wheels, and the swing arms of the two walking mechanisms are separately arranged.

Optionally, the two running gears are symmetrically distributed along the width direction of the rail vehicle.

Optionally, there is partial coincidence of the projections of the two running gears in a vertical plane along the width direction of the rail vehicle.

Optionally, the swing arm is equipped with a plurality ofly, and is a plurality of the swing arm includes first swing arm and second swing arm, the knuckle fork has first arm and the second arm that becomes the angle each other, first arm with first swing arm rotates to be connected, the second arm with the second swing arm rotates to be connected, first arm with the junction of second arm through a knuckle with the wheel hub assembly of walking the wheel rotates to be connected, first swing arm is kept away from the one end of first arm with the automobile body rotates to be connected, the second swing arm keep away from the one end of second arm with the automobile body rotates to be connected.

Optionally, two first swing arms are arranged, and the two first swing arms are symmetrically connected to two sides of the first arm along the length direction of the vehicle;

the second swing arm is equipped with two, two the second swing arm is in along the length direction symmetrical connection of vehicle the both sides of second arm.

Optionally, the running gear is a single wheel, and the second swing arm of one running gear is located between the first swing arm of the other running gear and the second swing arm of the other running gear.

Optionally, the bogie further comprises a first mounting seat and a second mounting seat, one end of the first swing arm, which is far away from the first arm, is rotatably connected with the first mounting seat, one end of the second swing arm, which is far away from the second arm, is rotatably connected with the second mounting seat, and the first mounting seat and the second mounting seat are suitable for being fixedly connected with the vehicle body.

Optionally, the bogie further comprises a multi-link mechanism, the multi-link mechanism is connected with the hub assembly of the walking wheels and is rotationally connected with the vehicle body, the number of the multi-link mechanism is two, the two multi-link mechanisms are respectively connected with the two walking wheels, the two multi-link mechanisms are rotationally connected, and one of the two multi-link mechanisms is rotationally connected with the guide frame.

Optionally, the bogie further comprises an inner ring and an outer ring, the inner ring and the outer ring can rotate relatively, one of the inner ring and the outer ring is fixedly connected with the guide frame, and the other is connected with the vehicle body.

Optionally, the bogie further comprises an elastic member, the inner ring and the outer ring, one end of the elastic member is connected with one of the inner ring and the outer ring, and the other end of the elastic member is connected with the other of the inner ring and the outer ring, so that the elastic member can deform when the guide frame rotates.

According to the bogie provided by the embodiment of the invention, the swing arms of the two walking mechanisms are separately arranged, so that the two walking mechanisms are separately arranged and do not influence each other, and thus, the two walking wheels connected with the two walking mechanisms are mutually independent, and when two sides of a track are positioned on different planes, the two walking wheels are displaced in the vertical direction and do not influence each other, so that the influence of the uneven track on the track vehicle is reduced, the vibration of the track vehicle is reduced, and the comfort is improved. Meanwhile, the running mechanism is connected with the vehicle body, and an axle does not need to be arranged on the guide frame, so that the weight of the guide frame is reduced.

The invention further provides a railway vehicle, which comprises the bogie.

Drawings

FIG. 1 is a schematic view of a bogie provided by an embodiment of the present invention;

FIG. 2 is a schematic view of the running gear of the bogie shown in FIG. 1;

FIG. 3 is a top view of the truck of FIG. 1;

FIG. 4 is a schematic view of a bogie provided by an embodiment of the present invention (including a multi-link mechanism);

FIG. 5 is a top view of the multi-link mechanism of the truck shown in FIG. 4;

FIG. 6 is a schematic view of a bogie provided by an embodiment of the present invention;

FIG. 7 is a bottom view of the truck shown in FIG. 6;

FIG. 8 is a schematic view of a portion of a bogie according to an embodiment of the present invention;

FIG. 9 is an exploded view of the portion of the truck shown in FIG. 8;

FIG. 10 is a schematic view of a bogie (including a power mechanism) provided by an embodiment of the present invention;

fig. 11 is a schematic view of the powertrain of the truck shown in fig. 10.

The reference numerals in the specification are as follows:

10. a running wheel; 101. a hub assembly;

20. a guide wheel; 201. a guide wheel shaft;

30. a multi-link mechanism; 301. a first link; 302. a second link; 303. a steering swing arm; 304. a third link; 305. a vehicle body mounting seat;

40. a guide frame;

50. a running mechanism; 501. a steering yoke; 5011. a first arm; 5012. a second arm; 5013. a suspension mounting seat; 502. a first swing arm; 503. a second swing arm; 504. a first mounting seat; 505. a second mounting seat;

60. hanging;

70. a shock absorber;

801. an inner ring; 802. an outer ring; 8021. an installation port; 803. an elastic member; 804. an elastic member mounting base; 805. a wear resistant sheet;

90. a power assembly; 901. a motor; 902. a gearbox; 903. a differential mechanism; 904. and a transmission mechanism.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects solved by the present invention more apparent, the present invention is further described in detail below with reference to the following 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.

As shown in fig. 1 to 11, an embodiment of the present invention provides a bogie for a railway vehicle, including a running wheel 10, a guide frame 40, a multi-link mechanism 30 and a running mechanism 50, where the running wheel 10 is connected to the guide frame 40 through the multi-link mechanism 30, the running mechanism 50 includes a steering yoke 501 and a swing arm, the steering yoke 501 is rotatably connected to a hub assembly 101 of the running wheel 10, one end of the swing arm is rotatably connected to the steering yoke 501, the other end of the swing arm is rotatably connected to a vehicle body, two running wheels 10 and two running mechanisms 50 are provided, two running mechanisms 50 are provided corresponding to two running wheels 10, and the swing arms of the two running mechanisms 50 are separately provided, so as to implement separate arrangement of the two running mechanisms 50.

According to the bogie provided by the embodiment of the invention, the swing arms of the two walking mechanisms 50 are separately arranged, so that the two walking mechanisms 50 are separately arranged and do not influence each other, and thus, the two walking wheels 10 connected with the two walking mechanisms 50 are mutually independent, and when two sides of a track are positioned on different planes, the two walking wheels 10 are displaced in the vertical direction and do not influence each other, so that the influence of the uneven track on the track vehicle is reduced, the vibration of the track vehicle is reduced, and the comfort is improved. At the same time, the running gear 50 is connected to the vehicle body without providing an axle on the guide frame 40, thereby also reducing the weight of the guide frame 40.

As shown in fig. 2, the two running gears 50 are symmetrically distributed in the width direction of the track vehicle. In a vertical plane along the width direction of the rail vehicle, there is a partial overlap of the projections of the two running gears 50, i.e. one of the running gears 50 extends in the width direction of the rail vehicle into the spatial extent of the other running gear 50. In this way, the extension length of the bogie in the width direction on the rail vehicle is reduced, the track of the two running wheels 10 can be reduced, and the turning radius of the rail vehicle can be reduced.

In the embodiment shown in fig. 2, the plurality of swing arms includes a first swing arm 502 and a second swing arm 503, the knuckle fork 501 has a first arm 5011 and a second arm 5012 which form an angle with each other, the first arm 5011 is rotatably connected to the first swing arm 502, the second arm 5012 is rotatably connected to the second swing arm 503, the joint between the first arm 5011 and the second arm 5012 is rotatably connected to the hub assembly 101 of the running wheel 10 via a knuckle, the end of the first swing arm 502 remote from the first arm 5011 is rotatably connected to the vehicle body, and the end of the second swing arm 503 remote from the second arm 5012 is rotatably connected to the vehicle body. Because the first swing arm 502 and the second swing arm 503 are both connected with the vehicle body in a rotating manner, the rotation between the vehicle body and the bogie can be relieved, and the riding comfort is improved.

In a specific embodiment, one end of the first swing arm 502, which is far away from the first arm 5011, is rotatably connected to the first mounting base 504 through a joint bearing, one end of the second swing arm 503, which is far away from the second arm 5012, is rotatably connected to the second mounting base 505 through a joint bearing, and both the first mounting base 504 and the second mounting base 505 are connected to the vehicle body, so that the first swing arm 502 and the second swing arm 503 are rotatably connected to the vehicle body. The first arm 5011 and the second arm 5012 are both located on a horizontal plane, the first mounting base 504 can rotate axially in the longitudinal direction of the rail vehicle, and the second mounting base 505 can also rotate axially in the longitudinal direction of the rail vehicle, so that the vehicle body can be prevented from being affected by vertical displacement of the running wheels 10.

It is understood that, in order to further eliminate the influence of the vertical displacement of the running wheels 10 on the vehicle body, the first swing arm 502 and the second swing arm 503 are both rotatable relative to the first arm 5011 and the second arm 5012, respectively, with the longitudinal direction of the railway vehicle as the axial direction.

In the embodiment shown in fig. 2, two first swing arms 502 and two second swing arms 503 are provided, the two first swing arms 502 are symmetrically connected to both sides of the first arm 5011 along the longitudinal direction of the rail vehicle, and the two second swing arms 503 are symmetrically connected to both sides of the second arm 5012 along the longitudinal direction of the rail vehicle. The two first swing arms 502 and the two second swing arms 503 are symmetrically arranged, so that the structural stability is enhanced, and the connection between the running wheels 10 and the vehicle body is more stable.

In a specific embodiment, the first swing arm 502 is located above the second swing arm 503, and the first swing arms 502 of the two running gears 50 are spaced in the width direction of the railway vehicle, wherein the second swing arm 503 of one running gear 50 extends from the second arm 5012 to between the two second swing arms 503 of the other running gear 50 in the width direction of the railway vehicle, so that the projections of the two running gears 50 in the vertical plane in the width direction of the railway vehicle are partially overlapped. It will be appreciated that when the second swing arm 503 of one of the running gears 50 is positioned between the second swing arms 503 of the other running gear, there is no connection and the two swing arms are still spaced apart.

In other embodiments, it may be that the first swing arm 502 of one of the running gears 50 extends from the first arm 5011 to between the two first swing arms 502 of the other running gear 50 in the width direction of the rail vehicle, so that there is a partial overlap of the projections of the two running gears 50 in the vertical plane in the width direction of the rail vehicle. In this case, the second swing arms 503 of the two running gears 50 are provided at an interval in the width direction of the railway vehicle. The first swing arms 502 of the two running mechanisms 50 may be provided at intervals in the width direction of the railway vehicle, and the second swing arms 503 of the two running mechanisms 50 may be provided at intervals in the width direction of the railway vehicle. The first swing arm 502 of one of the running gears 50 may extend from the first arm 5011 to between the two first swing arms 502 of the other running gear 50 in the width direction of the railway vehicle, and the second swing arm 503 of one of the running gears 50 may also extend from the second arm 5012 to between the two second swing arms 503 of the other running gear 50 in the width direction of the railway vehicle.

As shown in fig. 2 and 6, a suspension mount 5013 is formed at a joint between the two first swing arms 502 and the first arm 5011, and one end of the suspension 60 is fixed to the suspension mount 5013 and the other end is connected to the vehicle body. A position of a joint of the first arm 5011 and the second arm 5012 facing the other running gear 50 is formed as a damper mount, and one end of the damper 70 is fixed to the damper mount and the other end is connected to the vehicle body.

In one embodiment, the suspension 60 extends vertically from the suspension mount 5013 to cushion vertical loads, and the damper 70 extends upwardly from the damper mount and toward the other travel mechanism 50 to cushion lateral and vertical loads.

In the embodiment shown in fig. 1 to 11, the guide wheels 20 are connected to the guide frame 40 through the guide wheel shafts 201, the multi-link mechanism 30 is connected to the traveling wheels 10 and is rotatably connected to the vehicle body, and two multi-link mechanisms 30 are provided to rotatably connect between the two multi-link mechanisms 30. The two multi-link mechanisms 30 are connected to the two running wheels 10, respectively, and one of the two multi-link mechanisms 30 is connected to the guide frame 40.

The steering principle of the bogie provided by the invention is as follows: the rotation of the guide wheel 20 drives the rotation of the guide frame 40, the rotation of the guide frame 40 drives the rotation of one of the multi-link mechanisms 30, the rotation of one of the multi-link mechanisms 30 drives the running wheel 10 connected with the one of the multi-link mechanisms to turn and the rotation of the other multi-link mechanism 30 drives the other running wheel 10 connected with the other of the multi-link mechanisms 30 to turn, so that the rotation of the guide wheel 20 can drive the running wheel 10 to turn through the rotation of the guide frame 40 and the multi-link mechanism 30. The multi-link mechanism 30 for realizing the steering of the railway vehicle is connected with the vehicle body, and only one multi-link mechanism 30 is connected with the guide frame 40 to realize the steering transmission from the guide wheels 20 to the walking wheels 10, namely, the vehicle body bears most of the weight of the multi-link mechanism 30, so the weight of the guide frame 40 is reduced, and simultaneously, the load and the abrasion of the guide wheels 20 are also reduced.

The connection with the vehicle body referred to herein may be a direct connection with the vehicle body, or an indirect connection with the vehicle body via a bracket or the like.

In other embodiments, one multi-link mechanism may be provided, which has two ends connected to the two running wheels 10, respectively, so as to connect the running wheels 10 and the bogie 40.

In one embodiment, the running wheel 10 comprises a tire and the hub assembly 101 described above, the tire being mounted on the hub assembly 101, and the multi-link mechanism 30 being connected to the hub assembly 101. Specifically, one end of the multi-link mechanism 30 is fixedly connected to the hub assembly 101.

As shown in fig. 3 and 4, the multi-link mechanism 30 includes a first link 301 and a second link 302 rotatably connected to each other, and the first link 301 is vertically swingable with respect to the second link 302. In this way, the wheels 10 independently bounce, and vertical displacement is eliminated by the relative vertical pivoting of the first and

second links

301 and 302 and is not transmitted to the guide frame 40, so that the steering of the rail vehicle and the other wheel 10 are not affected.

In a specific embodiment, the first link 301 and the second link 302 are rotatably connected by a spherical hinge, and an opening of a spherical hinge seat of the spherical hinge faces upward, and the spherical hinge rod extends in a vertical direction, so that relative swinging in the vertical direction between the first link 301 and the second link 302 and relative rotation of the first link 301 and the second link 302 around a vertical axis can be realized.

As shown in fig. 4, the multi-link mechanism 30 further includes a steering swing arm 303, and the second link 302 is rotatably connected to the steering swing arm 303, and the second link 302 can swing in the vertical direction with respect to the steering swing arm 303. The influence of the displacement of the independently jumping running wheels 10 in the vertical direction is further eliminated.

In a specific embodiment, the rotating connection point of the first link 301 and the second link 302 and the rotating connection point of the second link 302 and the rotating swing arm are respectively located at two sides of the second link 302 in the vertical direction, so that the swinging amount of the first link 301 relative to the second link 302 in the vertical direction and the swinging amount of the second link 302 relative to the steering swing arm 303 in the vertical direction can be superposed, and the influence of the displacement amount of the running wheel 10 in the vertical direction on the steering of the railway vehicle and the other running wheel 10 can be eliminated more.

As shown in fig. 1 and 2, the first link 301 is located above the second link 302, and the steering swing arm 303 is located below the second link 302.

In other embodiments, it is also possible that the first link 301 is located below the second link 302, and the steering swing arm 303 is located above the second link 302.

In one embodiment, the first link 301 is connected to the running wheels 10, and the steering swing arm 303 is rotatably connected to the vehicle body so that the steering swing arm 303 can rotate along a vertical axis with respect to the vehicle body. In this way, the run-out of the running wheels 10 is transmitted to the first link 301 and absorbed by the rotational connection between the first link 301 and the second link 302 and the rotational connection between the second link 302 and the steering swing arm 303, thereby preventing the run-out of the running wheels 10 from affecting the steering of the railway vehicle. The steering swing arm 303 is rotatably connected with the vehicle body, so that the multi-link mechanism 30 is connected with the vehicle body, the weight of the guide frame 40 is reduced, the rotation of the steering swing arm 303 cannot be transmitted to the vehicle body, and the stability of the vehicle body is ensured.

In other embodiments, the running wheels 10 can also be pivoted by a link or links to the first link 301.

In a particular embodiment, the first connecting rod 301 is fixedly connected to the hub unit 101 of the running wheel 10. The second connecting rod 302 is connected with the steering swing arm 303 through a spherical hinge, the steering swing arm 303 is provided with the spherical hinge, the spherical hinge is rotatably connected with the vehicle body mounting seat 305, and the vehicle body mounting seat 305 is fixedly connected with the vehicle body, so that the connection between the steering swing arm 303 and the vehicle body is realized.

In one embodiment, the multi-link mechanism 30 further comprises a third link 304, and two multi-link mechanisms 30, wherein the third link 304 of one is pivotally connected to the guide frame 40, and the third link 304 of the other is used for connecting the two multi-link mechanisms 30. So that the rotation of the guide frame 40 can be transmitted to the corresponding running wheel 10 by the third link 304 connected to the guide frame 40 and to the other running wheel 10 through the third link 304 connecting the two multi-link mechanisms 30, thereby rotating the two running wheels 10.

In a specific embodiment, the third link 304 is connected to the steering swing arm 303, and the steering swing arm 303 and the second link 302 are used to indirectly connect the steering swing arm to the first link, and the rotation of the guide frame 40 is transmitted to the traveling wheels 10 through the third link 304, the steering swing arm 303, the second link 302 and the first link 301. The third link 304 connecting the two multi-link mechanisms 30 is respectively connected with the steering swing arms 303 of the two multi-link mechanisms 30 in a rotating manner, and one end of the third link 304 connected with the guide frame 40 is connected with the steering swing arm 303 in a rotating manner, and the other end is connected with the guide frame 40 in a rotating manner.

Specifically, the third link 304 and the steering swing arm 303 are also connected by a spherical hinge. As shown in fig. 3 and 4, one of the third links 304 is located above the steering swing arm 303, and the other third link 304 is located below the steering swing arm 303. This facilitates the arrangement of the third link 304, and also improves the space utilization. Specifically, the third link 304 connected to the guide frame 40 is located below the steering swing arm 303, and the third link 304 connecting the two multi-link mechanisms 30 is located above the steering swing arm 303. In this way, the multi-link mechanism 30 can be made to realize the connection of the running wheels 10 to the guide frame 40 and the connection of the two multi-link mechanisms 30 at the shortest distance, thereby reducing the number of parts and the size of the multi-link mechanism 30, and also reducing the space occupied by the multi-link mechanism 30 in the vertical direction.

In a specific embodiment, the upper surfaces of the two steering swing arms 303 are located on the same plane, so that the space occupied by the two multi-link mechanisms 30 in the vertical direction can be reduced.

However, in practical use, the upper surfaces of the two steering swing arms 303 may be staggered in the vertical direction.

In one embodiment, the two multi-link mechanisms 30 are arranged on the same side of the running wheels 10 in the length direction of the rail vehicle and distributed along the width direction of the rail vehicle. The structure for connecting the running wheels and the guide frame in the prior art is generally distributed on two sides of the running wheels, and occupies a large space, and the multi-link mechanism 30 of the invention is connected with the running wheels 10 and the guide frame 40 and is only distributed on one side of the running wheels 10, so that the space on the other side of the running wheels 10 is released, and the arrangement of other parts is facilitated.

As shown in fig. 4, 8 and 9, the bogie further includes an inner ring 801 and an outer ring 802, the inner ring 801 and the outer ring 802 are capable of rotating relatively, one of the inner ring 801 and the outer ring 802 is fixedly connected to the guide frame 40, and the other is connected to the vehicle body. When the guide frame 40 rotates, the inner ring 801 and the outer ring 802 rotate relatively, and the guide frame 40 and the vehicle body rotate relatively. In addition, one of the inner ring 801 and the outer ring 802 is fixed on the guide frame 40, and the other is connected with the vehicle body, and the vehicle body also bears part of the weight of the inner ring 801 and the outer ring 802, so that the weight of the guide frame 40 can be further reduced, the mass below the suspension 60 can be further reduced, and the vibration reduction effect can be improved.

In a specific embodiment, the outer race 802 is fixedly attached to the guide frame 40 and the inner race 801 is fixedly attached to the vehicle body. The fixing connection manner of the outer ring 802 and the guide frame 40 is not particularly limited, and the fixing connection manner of the inner ring 801 and the vehicle body is not particularly limited.

As shown in fig. 6, the bogie further includes a support, one end of which is connected to the inner ring 801 and the other end of which is connected to the vehicle body.

In other embodiments, the inner ring 801 may be fixedly connected to the guide frame 40, and the outer ring 802 may be connected to the vehicle body. At this time, one end of the support is connected to the outer ring 802, and the other end of the support is connected to the vehicle body.

In one embodiment, as shown in fig. 8 and 9, the bogie further includes an elastic member 803, one of the inner ring 801 and the outer ring 802 is connected to one end of the elastic member 803, and the other is connected to the other end of the elastic member 803, so that the elastic member 803 can be deformed when the guide frame 40 rotates. When the guide frame 40 rotates, the inner ring 801 and the outer ring 802 rotate relatively, and two ends of the elastic element 803 are respectively connected with the inner ring 801 and the outer ring 802, so that the elastic element 803 can deform when the inner ring 801 and the outer ring 802 rotate, potential energy is accumulated, a turning moment can be generated after the guide frame 40 rotates, when steering is not needed, the turning moment can ensure that the rail vehicle continues to run linearly, guiding of the guide wheel 20 is not needed, the utilization rate of the guide wheel 20 can be reduced, and the service life of the guide wheel 20 is prolonged.

The existing steering structure has no automatic aligning function after the deflection of the guide frame 40, and needs to apply force to the rail to rotate the guide frame, so that the guide wheel 20 is subjected to vertical acting force, and the abrasion of the guide wheel 20 is accelerated. The bogie of the invention can automatically correct under the action of the deformed elastic member 803 after the guide frame 40 deflects so that the rail vehicle continuously runs along a straight line, thereby not needing to apply acting force to the guide wheel 20 by a rail, reducing the utilization rate of the guide wheel 20, reducing the abrasion of the guide wheel 20 and prolonging the service life of the guide wheel 20.

In a specific embodiment, the outer ring 802 is fixedly connected to the guiding frame 40, the guiding frame 40 is provided with a mounting opening 8021, one end of the elastic member 803 is fixed on the inner ring 801, and the other end of the elastic member 803 is inserted into the mounting opening 8021. At this time, the other end of the elastic member 803 is indirectly connected to the outer ring 802.

In other embodiments, the mounting opening 8021 may also be disposed on the outer ring 802, and the other end of the elastic member 803 is directly connected to the outer ring 802. One end of the elastic member 803 may be fixed to the outer ring 802 or the guide frame 40, and the other end of the elastic member 803 may be connected to the inner ring 801, as long as the elastic member 803 can be deformed when the guide frame 40 rotates.

In one embodiment, the mounting opening 8021 extends in a radial direction of the outer ring 802, and the elastic member 803 also extends in the radial direction of the outer ring 802.

In one embodiment, as shown in fig. 8 and 9, the bogie further includes an elastic member mounting seat 804, the elastic member 803 is disposed on the elastic member mounting seat 804, the elastic member mounting seat 804 is disposed on the inner ring 801, and an end of the elastic member 803 facing away from the elastic member mounting seat 804 extends to be connected with the outer ring 802 or the guide frame 40.

As shown in fig. 9, the side wall of the mounting opening 8021 is provided with a wear-resistant plate 805, and the wear-resistant plate 805 is used for contacting with the elastic member 803 so as to reduce the wear of the elastic member 803.

It is understood that the elastic member 803 may be a damping plate, a spring, or other members. The mounting opening 8021 may be a groove formed in the guide frame 40, or may be an opening penetrating the guide frame 40 in the vertical direction. The present invention is not particularly limited with respect to the specific shape of the mounting opening 8021.

In some embodiments, the guiding frame 40 may be a guiding frame as shown in fig. 1 to 7, or may be a guiding device composed of a plurality of cantilevers as shown in fig. 8 and 9. The shape of the guide frame 40 is not particularly limited in the present invention.

As shown in fig. 10, the bogie according to the embodiment of the present invention further includes a power assembly 90, and the power assembly 90 is connected to the vehicle body. Specifically, as shown in fig. 11, the powertrain 90 includes a motor 901, a transmission case 902, a differential 903, and a transmission mechanism 904, an input shaft of the transmission case 902 is connected to an output shaft of the motor 901, an output end of the transmission case 902 is connected to a main reduction gear of the differential 903, output ends of the differentials 903 are respectively connected to the transmission mechanism 904, and the transmission mechanism 904 is connected to the hub assembly 101 through a universal joint.

In the embodiment shown in fig. 10, a part of the structure of the powertrain 90 is located on and connected to a support, which is connected to the inner race 801, and when the powertrain 90 is connected to the vehicle body, the inner race 801 achieves an indirect connection with the vehicle body.

The gearbox 902 in this embodiment is connected to the vehicle body, i.e. the gearbox 902 is located on and connected to the support, thereby avoiding fixing the powertrain 90 to the guide frame 40 and reducing the weight of the guide frame 40. The mass below the suspension 60 and the shock absorber 70 is reduced, thereby facilitating the improvement of the shock absorbing function and the improvement of the running stability and comfort of the vehicle. Specifically, the transmission may be connected to the vehicle body by suspension, bolts, or the like.

In other embodiments, other components of powertrain 90 may be coupled to the vehicle body, and which component is coupled to the vehicle body may be adjusted as desired.

The bogie including the powertrain 90 is a power bogie. In other embodiments, the powertrain 90 may be omitted, a non-power bogie is formed, and whether the powertrain 90 is disposed on the bogie or not may be specifically configured according to actual conditions.

Another embodiment of the invention further provides a railway vehicle, which comprises 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

1. A bogie for a rail vehicle, comprising:

a running wheel;

a guide frame;

the two walking mechanisms and the two walking wheels are respectively arranged corresponding to the two walking wheels, and the swing arms of the two walking mechanisms are separately arranged;

the plurality of swing arms comprise a first swing arm and a second swing arm, the steering yoke is provided with a first arm and a second arm which form an angle with each other, the first arm is rotatably connected with the first swing arm, the second arm is rotatably connected with the second swing arm, the joint of the first arm and the second arm is rotatably connected with a hub assembly of the walking wheel, one end of the first swing arm, far away from the first arm, is rotatably connected with the vehicle body, and one end of the second swing arm, far away from the second arm, is rotatably connected with the vehicle body;

the two first swing arms are symmetrically connected to two sides of the first arm along the length direction of the vehicle;

the second swing arm is equipped with two, two the second swing arm is along the length direction symmetrical connection of vehicle in the both sides of second arm.

2. A bogie as claimed in claim 1 in which the two running gear sets are symmetrically distributed across the width of the railway vehicle.

3. A bogie as claimed in claim 1 in which there is partial coincidence of the projections of the two running gears in a vertical plane across the width of the rail vehicle.

4. A bogie as claimed in claim 1 in which there are two said running gears and one second swing arm of one of the running gears is located between the two second swing arms of the other running gear.

5. The bogie as recited in claim 1, further comprising a first mounting seat and a second mounting seat, wherein one end of the first swing arm, which is far away from the first arm, is rotatably connected with the first mounting seat, one end of the second swing arm, which is far away from the second arm, is rotatably connected with the second mounting seat, and the first mounting seat and the second mounting seat are adapted to be fixedly connected with a vehicle body.

6. The bogie according to claim 1, wherein the multi-link mechanism is rotatably connected to the vehicle body, and wherein there are two multi-link mechanisms, two of the multi-link mechanisms are respectively connected to two of the running wheels, two of the multi-link mechanisms are rotatably connected to each other, and one of the two multi-link mechanisms is rotatably connected to the bogie.

7. The bogie of claim 1, further comprising an inner ring and an outer ring, the inner ring and the outer ring being rotatable relative to each other, one of the inner ring and the outer ring being fixedly connected to the bogie and the other being connected to the vehicle body.

8. The bogie of claim 7, further comprising a resilient member, one of the inner ring and the outer ring being coupled to one end of the resilient member and the other being coupled to the other end of the resilient member to enable deformation of the resilient member upon rotation of the guide frame.

9. A rail vehicle, characterized in that it comprises a bogie according to any one of claims 1-8.