Connecting mechanism and rail vehicle

Abstract

The present invention discloses a connection mechanism and a rail vehicle, the connection mechanism comprises: a first mounting member, a second mounting member, a first upper elastic member, a second upper elastic member, a first lower elastic member and a second lower elastic member, the first mounting member is suitable for connecting with a vehicle body, the first mounting member and the second mounting member are rotatably connected, the first upper elastic member is connected between the first mounting member and the second mounting member, the second upper elastic member is connected between the first mounting member and the second mounting member, the upper end of the first lower elastic member is connected to the second mounting member, the lower end of the first lower elastic member is suitable for connecting with a mounting base member of a bogie, the upper end of the second lower elastic member is connected to the second mounting member, and the lower end of the second lower elastic member is suitable for connecting with the mounting base member. The connection mechanism can reduce the roll during the operation of the rail vehicle and enhance the stability and comfort of the rail vehicle.

Description

Technical Field

[0001] The present invention relates to the field of rail transportation, and in particular to a connecting mechanism and a rail vehicle. Background Art

[0002] With the development of social economy, rail transit systems are now more and more widely used, and rail transit systems play a significant role in alleviating urban traffic congestion. There are many different forms of rail transit systems, such as steel wheel rail transit systems, rubber wheel rail transit systems, etc. The rail vehicles of the rubber wheel rail transit system usually include a body and a bogie. The bogie is provided with running wheels and guide wheels. The running wheels are used to run on the track. The guide wheels guide the rail vehicle by contacting the track. The body is connected to the bogie through a connecting mechanism. During the operation of the rail vehicle, the connecting mechanism can alleviate the vibration of the bogie and transmit the vibration of the bogie to the body as little as possible. However, the existing rail vehicles have obvious roll during operation, and the stability and comfort of the vehicle operation are not good enough, and there is room for improvement. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one object of the present invention is to provide a connection mechanism that can reduce the roll of a rail vehicle during operation and enhance the stability and comfort of the rail vehicle.

[0004] The connection mechanism of the present invention is used to connect the body and bogie of a rail vehicle, the bogie includes a mounting base, and the connection mechanism includes:

[0005] a first mounting member and a second mounting member, wherein the first mounting member and the second mounting member are adapted to be arranged between the vehicle body and the bogie, the first mounting member is adapted to be connected to the vehicle body, and the first mounting member and the second mounting member are rotatably connected;

[0006] a first upper elastic member and a second upper elastic member, wherein the first upper elastic member is connected between the first mounting member and the second mounting member, and the second upper elastic member is connected between the first mounting member and the second mounting member;

[0007] a first lower elastic member and a second lower elastic member, wherein the first lower elastic member is located below the first upper elastic member, the second lower elastic member is located below the second upper elastic member, the upper end of the first lower elastic member is connected to the second mounting member, the lower end of the first lower elastic member is suitable for connecting to the mounting base member, the upper end of the second lower elastic member is connected to the second mounting member, and the lower end of the second lower elastic member is suitable for connecting to the mounting base member;

[0008] Along the width direction of the rail vehicle, the first upper elastic member and the second upper elastic member are respectively located on both sides of a rotational connection position of the first mounting member and the second mounting member, and the first lower elastic member and the second lower elastic member are respectively located on both sides of the rotational connection position.

[0009] Furthermore, the connecting mechanism also includes a first shock absorber and a second shock absorber, and the first shock absorber and the second shock absorber are arranged in an inverted eight-shape. Along the width direction of the rail vehicle, the first shock absorber and the second shock absorber are respectively located on both sides of the rotating connection position, the upper end of the first shock absorber is connected to the first mounting member, and the lower end of the first shock absorber is suitable for connecting to the mounting base member, the upper end of the second shock absorber is connected to the first mounting member, and the lower end of the second shock absorber is suitable for connecting to the mounting base member.

[0010] Furthermore, the mounting base member includes an axle housing, and the first upper elastic member, the second upper elastic member, the first lower elastic member, the second lower elastic member, the first shock absorber and the second shock absorber are all located directly above the axle housing.

[0011] Further, the upper end of the first mounting member is suitable for connection with the vehicle body, the lower end of the first mounting member is rotatably connected to the lower end of the second mounting member, and the mounting base member includes an axle housing.

[0012] Further, the first mounting member includes: a first V-shaped portion, a second V-shaped portion, a first connecting portion and a second connecting portion, the first V-shaped portion and the second V-shaped portion are suitable for being arranged side by side on the front and rear sides of the axle housing, the first connecting portion is connected between an upper end of the first V-shaped portion and an upper end of the second V-shaped portion, the second connecting portion is connected between the other upper end of the first V-shaped portion and the other upper end of the second V-shaped portion, the first connecting portion and the second connecting portion are both suitable for being connected to the vehicle body, and the bottom of the first V-shaped portion and the bottom of the second V-shaped portion are both rotatably connected to the second mounting member.

[0013] Further, the second mounting member includes: a first U-shaped portion, a second U-shaped portion, a third connecting portion and a fourth connecting portion, the first U-shaped portion and the second U-shaped portion being suitable for being arranged side by side on the front and rear sides of the axle bridge housing, the third connecting portion being connected between one end of the first U-shaped portion and one end of the second U-shaped portion, the fourth connecting portion being connected between the other end of the first U-shaped portion and the other end of the second U-shaped portion, the bottom of the first V-shaped portion being rotatably connected to the bottom of the first U-shaped portion, the bottom of the second V-shaped portion being rotatably connected to the bottom of the second U-shaped portion, and there are two rotating connection positions, namely, the rotating connection position of the first V-shaped portion and the first U-shaped portion and the rotating connection position of the second V-shaped portion and the second U-shaped portion, and the two rotating connection positions coincide with each other when viewed from the front and rear direction of the rail vehicle.

[0014] Further, the first V-shaped portion is provided with a first V-shaped groove, and the bottom of the first U-shaped portion passes through the bottom of the first V-shaped groove; the second V-shaped portion is provided with a second V-shaped groove, and the bottom of the second U-shaped portion passes through the bottom of the second V-shaped groove.

[0015] Furthermore, the connecting mechanism also includes a first shock absorber and a second shock absorber, and the first shock absorber and the second shock absorber are arranged in an inverted eight-shape, the upper end of the first shock absorber is connected to the first connecting portion, and the lower end of the first shock absorber is suitable for connecting to the axle bridge housing, the upper end of the second shock absorber is connected to the second connecting portion, and the lower end of the second shock absorber is suitable for connecting to the axle bridge housing.

[0016] Further, the first upper elastic member is connected between the first connection part and the third connection part, the second upper elastic member is connected between the second connection part and the fourth connection part, the upper end of the first lower elastic member is connected to the third connection part, and the upper end of the second lower elastic member is connected to the fourth connection part.

[0017] Furthermore, the first upper elastic member, the second upper elastic member, the first lower elastic member and the second lower elastic member are all compression springs.

[0018] The present invention further provides a rail vehicle, comprising: a vehicle body, a bogie and the above-mentioned connecting mechanism, wherein the connecting mechanism is connected between the vehicle body and the bogie.

[0019] Beneficial effects:

[0020] The connecting mechanism of the present invention is provided with a first mounting member and a second mounting member, and the first mounting member and the second mounting member are rotatably connected. During the movement of the rail vehicle, when the vehicle body rolls relative to the bogie, the vehicle body mainly swings relative to the rotational connection position of the first mounting member and the second mounting member. By arranging the first upper elastic member, the second upper elastic member, the first lower elastic member and the second lower elastic member, the swing of the vehicle body can be suppressed (i.e., the roll is reduced), thereby enhancing the stability and comfort of the rail vehicle.

[0021] The rail vehicle of the present invention can reduce the roll during operation and enhance stability and comfort. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic diagram of a connection mechanism and a mounting base member of an embodiment of the present invention;

[0023] Figure 2 is a schematic diagram of a connection mechanism and a mounting base member of an embodiment of the present invention;

[0024] Figure 3 is a schematic diagram of a first mounting member according to an embodiment of the present invention;

[0025] Figure 4 is a schematic diagram of a second mounting member according to an embodiment of the present invention;

[0026] Figure 5 is a schematic diagram of a connecting mechanism and a bogie according to an embodiment of the present invention;

[0027] Figure 6 is a schematic diagram of a connection mechanism and a mounting base member of an embodiment of the present invention;

[0028] Figure 7 Schematic diagram of a rail vehicle and a track according to an embodiment of the present invention. DETAILED DESCRIPTION

[0029] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0030] A rail vehicle generally includes a vehicle body 200 and a bogie. The bogie is provided with running wheels 300 and guide wheels 400. The running wheels 300 are used for running on tracks 600. The guide wheels 400 guide the rail vehicle by contacting the tracks 600. A connecting mechanism is provided between the vehicle body 200 and the bogie. The vehicle body 200 is connected to the bogie via the connecting mechanism. The bogie includes a mounting base, which is the mounting base for other parts on the bogie.

[0031] Reference below Figure 1-7 A connection mechanism and a rail vehicle according to an embodiment of the present invention are described.

[0032] A connecting mechanism according to an embodiment of the present invention includes: a first mounting member 10 , a second mounting member 20 , a first upper elastic member 30 , a second upper elastic member 40 , a first lower elastic member 50 and a second lower elastic member 60 .

[0033] The first mounting member 10 and the second mounting member 20 are suitable for being arranged between the car body 200 and the bogie, and the first mounting member 10 is suitable for being connected to the car body 200, and the first mounting member 10 and the second mounting member 20 are rotatably connected. When the connecting mechanism of the embodiment of the present invention is installed on a rail vehicle, the first mounting member 10 and the second mounting member 20 are located between the car body 200 and the mounting base, and the first mounting member 10 is connected to the car body 200, and the first mounting member 10 and the car body 200 can be fixedly connected.

[0034] The first upper elastic member 30 is connected between the first mounting member 10 and the second mounting member 20, the second upper elastic member 40 is connected between the first mounting member 10 and the second mounting member 20, the first lower elastic member 50 is located below the first upper elastic member 30, and the second lower elastic member 60 is located below the second upper elastic member 40. The upper end of the first lower elastic member 50 is connected to the second mounting member 20, and the lower end of the first lower elastic member 50 is suitable for connecting to the mounting base member, the upper end of the second lower elastic member 60 is connected to the second mounting member 20, and the lower end of the second lower elastic member 60 is suitable for connecting to the mounting base member. When the connecting mechanism of the embodiment of the present invention is installed on a rail vehicle, the lower end of the first lower elastic member 50 and the lower end of the second lower elastic member 60 are respectively connected to the mounting base member.

[0035] In the transverse direction of the rail vehicle (i.e., the width direction of the rail vehicle), the first upper elastic member 30 and the second upper elastic member 40 are respectively located on both sides of the rotation connection position of the first mounting member 10 and the second mounting member 20, and the first lower elastic member 50 and the second lower elastic member 60 are respectively located on both sides of the above-mentioned rotation connection position. That is, in the transverse direction of the rail vehicle, the first upper elastic member 30 and the first lower elastic member 50 are located on one side of the above-mentioned rotation connection position, and the second upper elastic member 40 and the second lower elastic member 60 are located on the other side of the above-mentioned rotation connection position, as shown in FIG. Figure 1 or Figure 2 shown.

[0036] The connection mechanism of the embodiment of the present invention is provided with a first mounting member 10, a second mounting member 20 and four elastic members. During the movement of the rail vehicle, when the body 200 rolls relative to the bogie, the body 200 mainly swings relative to the rotation connection position of the first mounting member 10 and the second mounting member 20, that is, the swinging trajectory of the body 200 is restricted to a certain extent. Combined with the four elastic members installed on both sides of the rotation connection position, the swinging of the body 200 can be effectively suppressed, that is, the roll of the body 200 is reduced, and the stability and comfort of the rail vehicle are enhanced. When the rail vehicle of the prior art rolls, the swinging trajectory of the body 200 relative to the bogie is uncertain, and the effect of suppressing the roll is not good.

[0037] In one embodiment, a portion of the first mounting member 10 is located above the second mounting member 20, the upper end of the first mounting member 10 is suitable for connection with the vehicle body 200, and the lower end of the first mounting member 10 is rotatably connected to the lower end of the second mounting member 20. Through the above arrangement, the rotation connection position of the first mounting member 10 and the second mounting member 20 is far away from the vehicle body 200, the arc radius of the swing track of the vehicle body 200 is large, and combined with the four elastic members, the roll of the vehicle body is well suppressed, thereby improving the stability and comfort of the rail vehicle.

[0038] In one embodiment, the stiffness of the first lower elastic member 50 is greater than the stiffness of the first upper elastic member 30, for example, the stiffness of the first lower elastic member 50 is twice the stiffness of the first upper elastic member 30. The stiffness of the second lower elastic member 60 is greater than the stiffness of the second upper elastic member 40, for example, the stiffness of the second lower elastic member 60 is twice the stiffness of the second upper elastic member 40. The stiffness of the first upper elastic member 30 may be equal to the stiffness of the second upper elastic member 40, and the stiffness of the first lower elastic member 50 may be equal to the stiffness of the second lower elastic member 60. By reasonably setting the stiffness of each elastic member, a better effect of reducing the roll of the vehicle body can be achieved, so that the stability and comfort of the rail vehicle are better.

[0039] In one embodiment, the connection mechanism further includes a first shock absorber 70 and a second shock absorber 80. The first shock absorber 70 and the second shock absorber 80 are arranged in an inverted eight-shaped shape, that is, the two shock absorbers are arranged obliquely, and the distance between the lower ends of the two shock absorbers is less than the distance between the upper ends of the two shock absorbers. In the transverse direction of the rail vehicle, the first shock absorber 70 and the second shock absorber 80 are respectively located on both sides of the above-mentioned rotation connection position, the upper end of the first shock absorber 70 is connected to the first mounting member 10, and the lower end of the first shock absorber 70 is suitable for connecting to the mounting base member, the upper end of the second shock absorber 80 is connected to the first mounting member 10, and the lower end of the second shock absorber 80 is suitable for connecting to the mounting base member. When the connection mechanism of the embodiment of the present invention is installed on the rail vehicle, the lower end of the first shock absorber 70 and the lower end of the second shock absorber 80 are respectively connected to the mounting base member. By arranging the first shock absorber 70 and the second shock absorber 80, the vibration can be attenuated, so that the vibration of the bogie is transmitted to the vehicle body 200 as little as possible, thereby enhancing the stability and comfort of the vehicle. In addition, since the two shock absorbers are arranged obliquely, the vibration in the horizontal direction and the vertical direction can be attenuated, achieving a better vibration attenuation effect. Specifically, the angle between the first shock absorber 70 and the second shock absorber 80 and the vertical direction is 45 degrees, so as to achieve a better vibration attenuation effect.

[0040] In one embodiment, the mounting base includes an axle housing 500, and the axle housing 500 extends in the transverse direction of the rail vehicle. Specifically, in order to facilitate the installation of the first shock absorber 70 and the second shock absorber 80, the mounting base may further include a mounting seat 90, the mounting seat 90 is located above the axle housing 500, the mounting seat 90 is fixedly mounted on the axle housing 500, and the lower ends of the two shock absorbers are connected to the mounting seat 90.

[0041] In one embodiment, the upper end of the first mounting member 10 is suitable for connecting with the vehicle body 200, and the lower end of the first mounting member 10 is rotatably connected with the lower end of the second mounting member 20. When the connecting mechanism is installed on the rail vehicle, the upper end of the first mounting member 10 is connected with the vehicle body 200, and the upper end of the first mounting member 10 and the vehicle body 200 can be fixedly connected, such as by welding, or by bolts.

[0042] The first mounting member 10 can have a variety of shapes and structures, as long as the installation or arrangement relationship between the first mounting member 10 and other components is satisfied, and the present invention does not limit this; similarly, the second mounting member 20 can have a variety of shapes and structures, as long as the installation or arrangement relationship between the second mounting member 20 and other components is satisfied, and the present invention does not limit this.

[0043] In one embodiment, the first mounting member 10 is in a double V-shape, including a first V-shaped portion 11, a second V-shaped portion 12, a first connecting portion 13, and a second connecting portion 14. The first V-shaped portion 11 and the second V-shaped portion 12 are suitable for being arranged side by side on the front and rear sides of the axle housing 500, that is, when the connecting mechanism is installed on a rail vehicle, the first V-shaped portion 11 and the second V-shaped portion 12 are located on the front and rear sides of the axle housing 500. The openings of the two V-shaped portions are both upward, the first connecting portion 13 is connected between one upper end of the first V-shaped portion 11 and one upper end of the second V-shaped portion 12, and the second connecting portion 14 is connected between the other upper end of the first V-shaped portion 11 and the other upper end of the second V-shaped portion 12. The upper end of the first shock absorber 70 is connected to the first connecting portion 13, and the upper end of the second shock absorber 80 is connected to the second connecting portion 14. The first connecting portion 13 and the second connecting portion 14 are both suitable for connecting to the vehicle body 200. When the connecting mechanism is installed on a rail vehicle, the first connecting portion 13 and the second connecting portion 14 are both fixedly connected to the vehicle body 200, and the bottom of the first V-shaped portion 11 and the bottom of the second V-shaped portion 12 are both rotatably connected to the second mounting member 20.

[0044] In one embodiment, the first connecting portion 13 includes a first transverse plate portion 131 and a first longitudinal plate portion 132. The first transverse plate portion 131 is two, one end of the two first transverse plate portions 131 is connected to the two ends of the first longitudinal plate portion 132, and the other ends of the two first transverse plate portions 131 are connected to one upper end of the first V-shaped portion 11 and one upper end of the second V-shaped portion 12. The second connecting portion 14 includes a second transverse plate portion 141 and a second longitudinal plate portion 142. The second transverse plate portion 141 is two, one end of the two second transverse plate portions 141 is connected to the two ends of the second longitudinal plate portion 142, and the other ends of the two second transverse plate portions 141 are connected to the other upper end of the first V-shaped portion 11 and the other upper end of the second V-shaped portion 12. The upper end of the first shock absorber 70 is connected to the first longitudinal plate portion 132, and the upper end of the second shock absorber 80 is connected to the second longitudinal plate portion 142. The two first transverse plate portions 131 and the two second transverse plate portions 141 are both suitable for being fixedly connected to the vehicle body 200.

[0045] Combination Figure 3 It can be seen that the first mounting member 10 is a symmetrical structure, which is both transversely symmetrical and longitudinally symmetrical. The symmetrical structure enhances the stability of the connection and improves the stability and comfort of the rail vehicle.

[0046] In one embodiment, the second mounting member 20 is in a double U-shape, including a first U-shaped portion 21, a second U-shaped portion 22, a third connecting portion 23 and a fourth connecting portion 24. The first U-shaped portion 21 and the second U-shaped portion 22 are suitable for being arranged side by side on the front and rear sides of the axle housing 500, that is, when the connecting mechanism is installed on a rail vehicle, the first U-shaped portion 21 and the second U-shaped portion 22 are located on the front and rear sides of the axle housing 500. The openings of the two U-shaped portions are both upward, the third connecting portion 23 is connected between one end of the first U-shaped portion 21 and one end of the second U-shaped portion 22, the fourth connecting portion 24 is connected between the other end of the first U-shaped portion 21 and the other end of the second U-shaped portion 22, the third connecting portion 23 and the fourth connecting portion 24 are arranged side by side in the transverse direction of the rail vehicle, and the third connecting portion 23 and the fourth connecting portion 24 are both in a U-shape with the opening downward. The bottom of the first V-shaped portion 11 is rotatably connected to the bottom of the first U-shaped portion 21, and the rotation axis is the first axis. The bottom of the second V-shaped portion 12 is rotatably connected to the bottom of the second U-shaped portion 22, and the rotation axis is the second axis. The first axis and the second axis both extend along the front-to-back direction of the rail vehicle and the two coincide. There are two rotation connection positions, namely, the rotation connection position of the first V-shaped portion 11 and the first U-shaped portion 21 and the rotation connection position of the second V-shaped portion 12 and the second U-shaped portion 22. From the front-to-back direction of the rail vehicle (i.e., the longitudinal direction of the rail vehicle), the two rotation connection positions coincide, and the rotation connection position is the position of the first axis.

[0047] By providing two V-shaped portions and two U-shaped portions, the bottom of the V-shaped portion and the bottom of the corresponding U-shaped portion can be rotatably connected, so that the rotational connection position of the first mounting member 10 and the second mounting member 20 is farther away from the vehicle body 200, so as to better suppress the roll of the vehicle body and improve the stability and comfort of the rail vehicle.

[0048] The bottom of the first V-shaped portion 11 and the bottom of the first U-shaped portion 21 can be rotatably connected in a variety of ways. For example, through holes 28 are respectively provided at the bottom of the first V-shaped portion 11 and the bottom of the first U-shaped portion 21, and the pin passes through the through hole 28 at the bottom of the first V-shaped portion 11 and the through hole 28 at the bottom of the first U-shaped portion 21 to achieve rotatable connection. In order to enhance the smoothness of rotation, a bearing can be provided between the through hole 28 and the pin. The axis of the through hole 28 is the first axis or the second axis mentioned above.

[0049] Combination Figure 4 It can be seen that the second mounting member 20 is a symmetrical structure, which is both transversely symmetrical and longitudinally symmetrical. The symmetrical structure enhances the stability of the connection and improves the stability and comfort of the rail vehicle.

[0050] In one embodiment, the first V-shaped portion 11 is provided with a first V-shaped groove 15, which is formed on the first V-shaped portion 11, so the extension direction of the first V-shaped groove 15 is similar to that of the first V-shaped portion 11. The bottom of the first U-shaped portion 21 passes through the bottom of the first V-shaped groove 15, and the first axis passes through the bottom of the first V-shaped groove 15, that is, the above-mentioned rotation connection position is located at the bottom of the first V-shaped groove 15. The second V-shaped portion 12 is provided with a second V-shaped groove 16, which is formed on the second V-shaped portion 12, so the extension direction of the second V-shaped groove 16 is similar to that of the second V-shaped portion 12. The bottom of the second U-shaped portion 22 passes through the bottom of the second V-shaped groove 16, and the second axis passes through the bottom of the second V-shaped groove 16, that is, the above-mentioned rotation connection position is located at the bottom of the second V-shaped groove 16. By providing the first V-shaped groove 15 and the second V-shaped groove 16, the first U-shaped portion 21 and the second U-shaped portion 22 pass through the first V-shaped groove 15 and the second V-shaped groove 16 respectively, thereby saving longitudinal space, making the structure of the connecting mechanism of the embodiment of the present invention more compact and occupying less space. In addition, during the relative rotation of the first mounting member 10 and the second mounting member 20, the two V-shaped grooves respectively provide avoidance space for the two U-shaped portions to avoid interference.

[0051] In one embodiment, the first upper elastic member 30, the second upper elastic member 40, the first lower elastic member 50, the second lower elastic member 60, the first shock absorber 70 and the second shock absorber 80 are all located between the first V-shaped portion 11 and the second V-shaped portion 12. More specifically, the first upper elastic member 30 is located directly above the first lower elastic member 50, the second upper elastic member 40 is located directly above the second lower elastic member 60, the first upper elastic member 30, the second upper elastic member 40, the first lower elastic member 50, the second lower elastic member 60, the first shock absorber 70 and the second shock absorber 80 are all located directly above the axle housing 500, that is, if viewed from top to bottom, the first upper elastic member 30, the second upper elastic member 40, the first lower elastic member 50, the second lower elastic member 60, the first shock absorber 70 and the second shock absorber 80 overlap with the axle housing 500, thereby saving space, making the structure of the connection mechanism of the embodiment of the present invention more compact, and enhancing the anti-roll effect, thereby enhancing the stability and comfort of the rail vehicle.

[0052] In one embodiment, the first upper elastic member 30 is connected between the first connection portion 13 and the third connection portion 23, and specifically, the first upper elastic member 30 is connected to the first longitudinal plate portion 132. The second upper elastic member 40 is connected between the second connection portion 14 and the fourth connection portion 24, and specifically, the second upper elastic member 40 is connected to the second longitudinal plate portion 142. The upper end of the first lower elastic member 50 is connected to the third connection portion 23, and the upper end of the second lower elastic member 60 is connected to the fourth connection portion 24, and the lower ends of the two lower elastic members are suitable for being connected to the axle housing 500.

[0053] In one embodiment, the first upper elastic member 30, the second upper elastic member 40, the first lower elastic member 50 and the second lower elastic member 60 are all compression springs. In other embodiments, each elastic member may also be other types of elastic devices, such as air springs.

[0054] The connecting mechanism of the embodiment of the present invention can better suppress the roll of the rail vehicle and enhance the stability and comfort of the rail vehicle by providing the first mounting member 10, the second mounting member 20, the first upper elastic member 30, the second upper elastic member 40, the first lower elastic member 50, the second lower elastic member 60, the first shock absorber 70 and the second shock absorber 80.

[0055] A rail vehicle according to an embodiment of the present invention comprises: a vehicle body 200, a bogie and the above-mentioned connecting mechanism, wherein the connecting mechanism is connected between the vehicle body 200 and the bogie.

[0056] In addition, the connection mechanism also includes a connecting rod 700, which extends longitudinally along the rail vehicle. One end of the connecting rod 700 is suitable for connection with a mounting base (such as an axle housing 500 or a mounting seat 90), and the other end of the connecting rod 700 is suitable for connection with the vehicle body 200.

[0057] In one embodiment, there are three connecting rods 700, and the three connecting rods 700 are arranged in a triangle. Figure 5 One end of one of the connecting rods 700 is suitable for being connected to the mounting seat 90 , and the other end is suitable for being connected to the vehicle body 200 , and one end of the other two connecting rods 700 is suitable for being connected to the axle housing 500 , and the other end is suitable for being connected to the vehicle body 200 .

[0058] In the description of the present invention, the terms "front", "rear", "left", "right", "up", "down", "lateral", "longitudinal" and the like are based on the orientation of the normal placement or travel of the rail vehicle. Assuming that a driver stands facing the forward direction of the rail vehicle, the front, back, left and right are determined based on the driver. For example, the left hand direction of the driver is the left, and the same applies to other orientations. In the description of the present invention, the terms "install", "connect", "set" and the like should be understood in a broad sense, and may be direct installation, connection or setting, or indirect installation, connection or setting, wherein the connection may be a mechanical connection, an electrical connection or a connection to achieve power transmission. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0059] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example.

[0060] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A connecting mechanism for connecting a body and a bogie of a rail vehicle, the bogie comprising a mounting base, characterized in that: The connecting mechanism comprises: a first mounting member and a second mounting member, wherein the first mounting member and the second mounting member are adapted to be arranged between the vehicle body and the bogie, the first mounting member is adapted to be connected to the vehicle body, and the first mounting member and the second mounting member are rotatably connected; a first upper elastic member and a second upper elastic member, wherein the first upper elastic member is connected between the first mounting member and the second mounting member, and the second upper elastic member is connected between the first mounting member and the second mounting member; a first lower elastic member and a second lower elastic member, wherein the first lower elastic member is located below the first upper elastic member, the second lower elastic member is located below the second upper elastic member, the upper end of the first lower elastic member is connected to the second mounting member, the lower end of the first lower elastic member is suitable for connecting to the mounting base member, the upper end of the second lower elastic member is connected to the second mounting member, and the lower end of the second lower elastic member is suitable for connecting to the mounting base member; Along the width direction of the rail vehicle, the first upper elastic member and the second upper elastic member are respectively located on both sides of the rotation connection position of the first mounting member and the second mounting member, the first lower elastic member and the second lower elastic member are respectively located on both sides of the rotation connection position, the stiffness of the first lower elastic member is greater than the stiffness of the first upper elastic member, the stiffness of the second lower elastic member is greater than the stiffness of the second upper elastic member, the stiffness of the first lower elastic member is equal to the stiffness of the second lower elastic member, the first mounting member is a symmetrical structure, both laterally symmetrical and longitudinally symmetrical, the connecting mechanism also includes a first shock absorber and a second shock absorber, the first shock absorber and the second shock absorber are arranged in an inverted eight-shaped shape, along the width direction of the rail vehicle, the first shock absorber and the second shock absorber are respectively located on both sides of the rotation connection position, the upper end of the first shock absorber is connected to the first mounting member, the lower end of the first shock absorber is suitable for connecting to the mounting base member, the upper end of the second shock absorber is connected to the first mounting member, the lower end of the second shock absorber is suitable for connecting to the mounting base member, and the angles of the first shock absorber and the second shock absorber with the vertical direction are both 45 degrees.

2. The connection mechanism according to claim 1, characterized in that: The mounting base member includes an axle housing, and the first upper elastic member, the second upper elastic member, the first lower elastic member, the second lower elastic member, the first shock absorber and the second shock absorber are all located directly above the axle housing.

3. The connection mechanism according to claim 1, characterized in that: The upper end of the first mounting member is suitable for connection with the vehicle body, the lower end of the first mounting member is rotatably connected to the lower end of the second mounting member, and the mounting base member includes an axle housing.

4. The connection mechanism according to claim 3, characterized in that: The first mounting member includes: a first V-shaped portion, a second V-shaped portion, a first connecting portion and a second connecting portion, the first V-shaped portion and the second V-shaped portion are suitable for being arranged side by side on the front and rear sides of the axle housing, the first connecting portion is connected between an upper end of the first V-shaped portion and an upper end of the second V-shaped portion, the second connecting portion is connected between the other upper end of the first V-shaped portion and the other upper end of the second V-shaped portion, the first connecting portion and the second connecting portion are both suitable for being connected to the vehicle body, and the bottom of the first V-shaped portion and the bottom of the second V-shaped portion are both rotatably connected to the second mounting member.

5. The connection mechanism according to claim 4, characterized in that: The second mounting member includes: a first U-shaped portion, a second U-shaped portion, a third connecting portion and a fourth connecting portion, the first U-shaped portion and the second U-shaped portion being suitable for being arranged side by side on the front and rear sides of the axle bridge housing, the third connecting portion being connected between one end of the first U-shaped portion and one end of the second U-shaped portion, the fourth connecting portion being connected between the other end of the first U-shaped portion and the other end of the second U-shaped portion, the bottom of the first V-shaped portion being rotatably connected to the bottom of the first U-shaped portion, the bottom of the second V-shaped portion being rotatably connected to the bottom of the second U-shaped portion, and there are two rotating connection positions, namely, the rotating connection position of the first V-shaped portion and the first U-shaped portion and the rotating connection position of the second V-shaped portion and the second U-shaped portion, and the two rotating connection positions coincide with each other when viewed from the front and rear direction of the rail vehicle.

6. The connection mechanism according to claim 5, characterized in that: The first V-shaped portion is provided with a first V-shaped groove, and the bottom of the first U-shaped portion passes through the bottom of the first V-shaped groove; the second V-shaped portion is provided with a second V-shaped groove, and the bottom of the second U-shaped portion passes through the bottom of the second V-shaped groove.

7. The connection mechanism according to claim 5, characterized in that: The connecting mechanism also includes a first shock absorber and a second shock absorber, the first shock absorber and the second shock absorber are arranged in an inverted eight-shape, the upper end of the first shock absorber is connected to the first connecting portion, the lower end of the first shock absorber is suitable for connecting to the axle bridge housing, the upper end of the second shock absorber is connected to the second connecting portion, and the lower end of the second shock absorber is suitable for connecting to the axle bridge housing.

8. The connection mechanism according to claim 5, characterized in that: The first upper elastic member is connected between the first connection part and the third connection part, the second upper elastic member is connected between the second connection part and the fourth connection part, the upper end of the first lower elastic member is connected to the third connection part, and the upper end of the second lower elastic member is connected to the fourth connection part.

9. The connection mechanism according to claim 1, characterized in that: The first upper elastic member, the second upper elastic member, the first lower elastic member and the second lower elastic member are all compression springs.

10. A rail vehicle, characterized in that: include: A vehicle body, a bogie, and a connecting mechanism according to any one of claims 1 to 9, wherein the connecting mechanism is connected between the vehicle body and the bogie.

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