Bogies and rail vehicles

Abstract

The present application discloses a bogie and a rail vehicle. The bogie includes an axle bridge, a first elastic member, a second elastic member, a first support frame and a second support frame; the lower ends of the two elastic members are connected to the axle bridge; the first support frame is used to be fixedly connected to the body of the rail vehicle; the second support frame is connected to the upper ends of the two elastic members, and the second support frame is rotatably connected to the first support frame. Thus, the first support frame is used to be connected to the body, the second support frame is connected to the upper ends of the two elastic members, the lower ends of the two elastic members are connected to the axle bridge, and the first support frame is rotatably connected to the second support frame. In this way, when the rail vehicle provided with the bogie is traveling along the extension direction of the track beam, if there is a difference in the height position of the two running surfaces of the track beam, the car body swings around the rotation axis of the first support frame and the second support frame, and the car body has less freedom of swinging, which can improve the riding experience of the people in the car body.

Description

Technical Field

[0001] The present application relates to the field of rail transportation, and in particular to bogies and rail vehicles. Background Art

[0002] The car body of the existing rail vehicle is directly connected to the axle bridge through an elastic member. Since the height positions of the two running surfaces of the track beam that carry the running wheels are different, the car body will swing under the action of the elastic member when the rail vehicle is running along the extension direction of the track beam, and the car body will swing irregularly along multiple degrees of freedom. In this way, the experience of the people in the car body is poor. Summary of the invention

[0003] A series of simplified concepts are introduced in the Summary of the Invention section, which will be further described in detail in the Specific Embodiments section. The Summary of the Invention section of this application does not mean to attempt to define the key features and essential technical features of the claimed technical solution, nor does it mean to attempt to determine the scope of protection of the claimed technical solution.

[0004] In order to at least partially solve the above technical problems, the present application provides a bogie for a rail vehicle, the bogie comprising:

[0005] Axle bridge;

[0006] A first elastic member and a second elastic member, wherein the lower end of the first elastic member and the lower end of the second elastic member are both connected to the axle bridge;

[0007] a first support frame, the first support frame being used for being fixedly connected to a body of a rail vehicle;

[0008] A second support frame, the second support frame is connected to an upper end of the first elastic member and an upper end of the second elastic member, and the second support frame is rotatably connected to the first support frame;

[0009] Along the lateral direction of the bogie, the first elastic member and the second elastic member are respectively located on the left and right sides of the rotation axis of the first support frame and the second support frame.

[0010] According to the bogie of the present application, the first support frame is used to connect to the car body, the second support frame is connected to the upper end of the first elastic member and the upper end of the second elastic member, the lower end of the first elastic member and the lower end of the second elastic member are both connected to the axle bridge, and the first support frame is rotatably connected to the second support frame. In this way, during the travel of a rail vehicle equipped with a bogie along the extension direction of the rail beam, if there is a difference in the height positions of the two running surfaces of the rail beam, the car body swings around the rotation axis of the first support frame and the second support frame, and the car body has less freedom of swinging, which can improve the riding experience of people in the car body.

[0011] Optionally, the direction of the rotation axis extends in the longitudinal direction of the bogie.

[0012] Optionally, the first elastic member and the second elastic member are both air springs.

[0013] Optionally, the bogie further comprises a vertical shock absorber arranged along the height direction of the bogie, the upper end of the vertical shock absorber is connected to the first support frame, and the lower end of the vertical shock absorber is connected to the axle bridge.

[0014] Optionally, the vertical shock absorber includes a first vertical shock absorber and a second vertical shock absorber. Along the lateral direction of the bogie, the first vertical shock absorber is located on one side of the rotation axis, and the second vertical shock absorber is located on the other side of the rotation axis.

[0015] Optionally, the bogie further comprises a lateral shock absorber arranged along the lateral direction of the bogie, a first end of the lateral shock absorber is connected to the second support frame, and a second end of the lateral shock absorber is connected to the axle bridge.

[0016] Optionally, the lateral shock absorber comprises a first lateral shock absorber and a second lateral shock absorber, and along the lateral direction of the bogie, the first lateral shock absorber is located on one side of the rotation axis, and the second lateral shock absorber is located on the other side of the rotation axis.

[0017] Optionally, the lower end of the first support frame is rotatably connected to the lower end of the second support frame.

[0018] Optionally, the first support frame includes a top arm and a bottom arm, the top arm is used to connect to the vehicle body, the upper end of the bottom arm is connected to the top arm, the extension direction of the top arm is inclined to the extension direction of the bottom arm, and the second support frame is rotatably connected to the lower end of the bottom arm.

[0019] Optionally, the bottom arm includes a first bottom arm and a second bottom arm, the upper end of the first bottom arm is spaced apart from the upper end of the second bottom arm, and the lower end of the first bottom arm is connected to the lower end of the second bottom arm so that the bottom arm is in a "V" shape.

[0020] Optionally, the upper end of the vertical shock absorber is connected to the end of the top arm.

[0021] Optionally, the bottom arm includes two plate portions, which are spaced apart along the longitudinal direction of the bogie, the upper end of one plate portion and the upper end of the other plate portion are both connected to the top arm, the lower end of one plate portion and the lower end of the other plate portion are both connected to the rotating shaft, and the first support frame and the second support frame are rotatably connected via the rotating shaft.

[0022] Optionally, when the axle bridge is connected to the wheel, the rotation axis is located above the lower edge of the wheel, and the minimum distance between the lower edge of the wheel and the lower edge of the rotation axis ranges from 100 mm to 300 mm.

[0023] Optionally, along the longitudinal direction of the bogie, the vertical shock absorber and the first support frame are both located on the same side of the first elastic member, and the vertical shock absorber and the first support frame are both located on the same side of the second elastic member.

[0024] Optionally, the second support frame includes a bottom and two vertical parts. The two vertical parts are spaced apart along the lateral direction of the bogie. The bottom is connected to the lower end of the vertical part. The upper ends of the two vertical parts are respectively connected to the upper end of the first elastic member and the upper end of the second elastic member. The bottom is rotatably connected to the first support frame.

[0025] Optionally, the upper end of the vertical portion has a mounting plate, and the two mounting plates are overlapped to the upper end of the first elastic member and the upper end of the second elastic member, respectively, and are connected to the first elastic member and the second elastic member, respectively.

[0026] Optionally, along the longitudinal direction of the bogie, the mounting plate is located on a side of the first support frame close to a position of the axle bridge for connecting the wheels.

[0027] Optionally, the second support frame is further provided with reinforcing ribs of a triangular structure, and the reinforcing ribs are connected to the top end of the mounting plate and the side surface of the upper end of the vertical portion.

[0028] Optionally, the bogie further comprises two transverse stops, the two transverse stops are connected to the upper end of the axle bridge and are located between the two mounting plates, and the two transverse stops are used to block the two mounting plates respectively.

[0029] Optionally, the vertical portion is inclined to the height direction of the bogie, and along the longitudinal direction of the bogie, the upper end of the vertical portion is closer to the position of the axle bridge for connecting wheels than the lower end of the vertical portion.

[0030] The present application also provides a rail vehicle, which includes the aforementioned bogie.

[0031] According to the rail vehicle of the present application, the rail vehicle includes the aforementioned bogie, the first support frame is used to connect to the car body, the second support frame is connected to the upper end of the first elastic member and the upper end of the second elastic member, the lower end of the first elastic member and the lower end of the second elastic member are both connected to the axle bridge, and the first support frame is rotatably connected to the second support frame. In this way, during the travel of the rail vehicle provided with the bogie along the extension direction of the track beam, if there is a difference in the height position of the two running surfaces of the track beam, the car body swings around the rotation axis of the first support frame and the second support frame, the car body has less freedom of swinging, and can improve the riding experience of people in the car body. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to make the advantages of the present application more easily understood, the present application briefly described above will be described in more detail by referring to the specific embodiments shown in the accompanying drawings. It can be understood that these drawings only depict typical embodiments of the present application and therefore should not be considered as limiting the scope of protection thereof. The present application is described and explained with additional characteristics and details through the accompanying drawings.

[0033] Figure 1 It is a perspective schematic diagram of a part of a bogie according to a preferred embodiment of the present application;

[0034] Figure 2 for Figure 1 A schematic front view of a bogie connected to a vehicle body;

[0035] Figure 3 for Figure 1 A three-dimensional schematic diagram of a bogie;

[0036] Figure 4 for Figure 1 A three-dimensional schematic diagram of the first support frame and the rotating shaft of the bogie being connected together; and

[0037] Figure 5 for Figure 1 A three-dimensional schematic diagram of the second support frame and the axle cover of the bogie being connected together.

[0038] Description of Reference Numerals

[0039] 110: Wheel 120: Axle

[0040] 130: Steering knuckle 140: Elastic member

[0041] 141: first elastic member 142: second elastic member

[0042] 150: rotating shaft 160: first supporting frame

[0043] 161: Top arm 162: Bottom arm

[0044] 163: First bottom arm 164: Second bottom arm

[0045] 165: plate portion 170: second support frame

[0046] 171: bottom 172: vertical part

[0047] 173: Mounting plate 174: Reinforcement rib

[0048] 175: Mounting portion 176: Mounting groove

[0049] 180: vertical shock absorber 181: first vertical shock absorber

[0050] 182: Second vertical shock absorber 190: Shaft cover

[0051] 200: Lateral shock absorber 201: Second end of lateral shock absorber

[0052] 202: First lateral shock absorber 203: Second lateral shock absorber

[0053] 210: lateral stopper 220: first mounting seat

[0054] 221: front first mounting seat 222: rear first mounting seat

[0055] 230: second mounting seat 240: guide wheel

[0056] 241: first guide wheel 242: second guide wheel

[0057] 250: guide cantilever 251: first guide cantilever

[0058] 252: Second guide cantilever 260: Steering tie rod

[0059] 270: traction rod 271: first traction rod

[0060] 272: Second traction rod 273: Third traction rod

[0061] 280: Stabilizer bar 290: Drive motor

[0062] 300: Car body 310: Track beam DETAILED DESCRIPTION

[0063] In the following description, a large number of specific details are provided to provide a more thorough understanding of the present application. However, it is obvious to those skilled in the art that the present application embodiments can be implemented without one or more of these details. In other examples, in order to avoid confusion with the present application embodiments, some technical features well known in the art are not described.

[0064] The preferred embodiments of the present application are described below with reference to the accompanying drawings. It should be noted that the terms "upper", "lower" and similar expressions used herein are only for the purpose of illustration and are not intended to be limiting.

[0065] Herein, ordinal numbers such as “first” and “second” cited in this application are merely identifiers and do not have any other meanings, such as a specific order or the like.

[0066] In order to thoroughly understand the implementation of the present application, a detailed structure will be presented in the following description. Obviously, the implementation of the implementation of the present application is not limited to the specific details familiar to those skilled in the art. The preferred implementation of the present application is described in detail below, but in addition to these detailed descriptions, the present application may also have other implementations.

[0067] The present application provides a bogie. The bogie is used for a rail vehicle. The rail vehicle includes a car body 300. The bogie is located below the car body 300 and is connected to the car body 300. When the rail vehicle provided with the bogie is running, when there is a difference in height between the running surfaces of the two running wheels of the track beam 310, the car body 300 rotates around the axis of the rotating shaft 150, and the car body 300 has less freedom of swinging, thereby improving the user experience.

[0068] Please refer to Figures 1 to 5 The bogie includes a wheel 110, an axle bridge 120 and a steering knuckle 130. The axle bridge 120 is a steel structure. The length direction of the axle bridge 120 is parallel to the first horizontal direction D2 ( Figure 2 The first horizontal direction D2 is the left and right direction, that is, the lateral direction of the bogie. A steering knuckle 130 is provided at both ends of the axle bridge 120 along the first horizontal direction D2. The wheel 110 may be a running wheel. The rotating shaft of the wheel 110 is connected to the steering knuckle 130. The wheel 110 is used to be arranged above the running surface of the track beam 310 and to roll on the running surface, thereby driving the vehicle body 300 to travel along the extension direction of the track beam 310.

[0069] It should be noted that the second horizontal direction D1 (an example of the longitudinal direction of the bogie) is perpendicular to the first horizontal direction D2. When the bogie is connected to the car body 300, the first horizontal direction D2 is parallel to the width direction of the car body 300, the second horizontal direction D1 is parallel to the length direction of the car body 300, and the height direction D3 of the bogie is parallel to the height direction of the car body 300.

[0070] like Figures 1 to 3 As shown, the bogie further includes an elastic member 140. The elastic member 140 may be an air spring. The lower end of the elastic member 140 is connected to the axle bridge 120.

[0071] Please refer to Figures 1 to 5, the bogie further includes a rotating shaft 150, a first support frame 160 and a second support frame 170. The axial direction of the rotating shaft 150 is parallel to the second horizontal direction D1. The first support frame 160 is used to be fixedly connected to the body 300 of the rail vehicle. The second support frame 170 is connected to the upper end of the elastic member 140. The second support frame 170 is rotatably connected to the first support frame 160 through the rotating shaft 150. In this way, the second support frame 170 can rotate around the axis of the rotating shaft 150 relative to the first support frame 160. That is, the direction of the rotation axis of the first support frame 160 and the second support frame 170 extends along the longitudinal direction of the bogie.

[0072] The elastic member 140 includes a first elastic member 141 and a second elastic member 142. The lower end of the first elastic member 141 and the lower end of the second elastic member 142 are connected to the shaft bridge 120. The second support frame 170 is connected to the upper end of the first elastic member 141 and the upper end of the second elastic member 142. Along the first horizontal direction D2, the first elastic member 141 is located on one side of the rotation axis 150, and the second elastic member 142 is located on the other side of the rotation axis 150. In other words, the first elastic member 141 and the second elastic member 142 are respectively located on the left and right sides of the rotation axis of the first support frame 160 and the second support frame 170.

[0073] like Figure 2 As shown, when the rail vehicle provided with a bogie is traveling along the extension direction of the track beam 310, the gravity of the car body 300 is transmitted to the running surface through the first support frame 160, the rotating shaft 150, the second support frame 170, the elastic member 140, the axle bridge 120 and the running wheel in sequence. When the rail vehicle provided with a bogie is traveling along the extension direction of the track beam 310, if there is a difference in the height position of the two running surfaces of the track beam 310, the first support frame 160 rotates relative to the second support frame 170 around the axis of the rotating shaft 150, so that the car body 300 swings around the axis of the rotating shaft 150. In this way, the car body 300 has less freedom of swinging, which can improve the riding experience of the people in the car body 300.

[0074] In this embodiment, the first support frame 160 is used to connect to the car body 300, the second support frame 170 is connected to the upper end of the first elastic member 141 and the upper end of the second elastic member 142, the lower end of the first elastic member 141 and the lower end of the second elastic member 142 are connected to the axle bridge 120, the first support frame 160 is rotatably connected to the second support frame 170 through the rotating shaft 150, and the second support frame 170 can rotate around the axis of the rotating shaft 150 relative to the first support frame 160. In this way, when a rail vehicle equipped with a bogie travels along the extension direction of the track beam 310, if there is a difference in the height positions of the two running surfaces of the track beam 310, the car body 300 swings around the axis of the rotating shaft 150, and the car body 300 has less freedom of swinging, which can improve the riding experience of people in the car body 300.

[0075] Preferably, please refer to Figure 4 , the first support frame 160 includes a top arm 161 and a bottom arm 162. The top arm 161 is arranged along the first horizontal direction D2. The top arm 161 is used to be connected to the vehicle body 300. The bottom arm 162 is located below the top arm 161. The upper end of the bottom arm 162 is connected to the top arm 161. The extension direction of the top arm 161 is inclined to the extension direction of the bottom arm 162. The rotating shaft 150 is connected to the lower end of the bottom arm 162. In this way, the position of the rotating shaft 150 can be lowered as much as possible, and the swing degree of the vehicle body 300 can be reduced.

[0076] Preferably, if Figure 4 As shown, the bottom arm 162 includes a first bottom arm 163 and a second bottom arm 164. The upper end of the first bottom arm 163 and the upper end of the second bottom arm 164 are spaced apart. The lower end of the first bottom arm 163 is connected to the lower end of the second bottom arm 164. In this way, the bottom arm 162 is "V"-shaped. The top arm 161 and the bottom arm 162 form a triangular structure. One corner of the triangular structure is located at the lower end of the first support frame 160. The rotating shaft 150 is connected to the corner of the triangular structure. As a result, the structure of the first support frame 160 is stable and has high strength.

[0077] Please return Figures 1 to 3 The bogie further includes a vertical shock absorber 180. The vertical shock absorber 180 includes a first vertical shock absorber 181 and a second vertical shock absorber 182. Along the first horizontal direction D2, the first vertical shock absorber 181 is located on one side of the rotating shaft 150, and the second vertical shock absorber 182 is located on the other side of the rotating shaft 150.

[0078] The length direction of the vertical shock absorber 180 is arranged along the height direction D3 of the bogie. The upper end of the vertical shock absorber 180 is connected to the top arm 161. The lower end of the axle bridge 120 extends and protrudes along the second horizontal direction D1 to form a first mounting seat 220. The first mounting seat 220 includes a front first mounting seat 221 and a rear first mounting seat 222. Along the second horizontal direction D1, the front first mounting seat 221 is located on one side of the steering knuckle 130, and the rear first mounting seat 222 is located on the other side of the steering knuckle 130. There are two front first mounting seats 221 and two rear first mounting seats 222. Along the first horizontal direction D2, one front first mounting seat 221 and one rear first mounting seat 222 are both located on one side of the rotating shaft 150, and another front first mounting seat 221 and another rear first mounting seat 222 are both located on the other side of the rotating shaft 150.

[0079] The lower end of the vertical shock absorber 180 is connected to the front first mounting seat 221. Thus, the vibration of the vehicle body 300 along the height direction D3 of the bogie can be attenuated, making the rail vehicle more stable when traveling.

[0080] Further preferably, the upper end of the vertical shock absorber 180 is connected to the end of the top arm 161. Thus, the distance between the vertical shock absorber 180 and the rotating shaft 150 can be increased as much as possible, and the vibration of the car body 300 along the height of the bogie can be further attenuated.

[0081] Please return Figure 4 The bottom arm 162 includes two plate portions 165. The two plate portions 165 are spaced apart along the second horizontal direction D1. The upper end of one plate portion 165 and the upper end of the other plate portion 165 are both connected to the top arm 161. The lower end of one plate portion 165 and the lower end of the other plate portion 165 are both welded to the rotating shaft 150. Thus, the bottom arm 162 has a high strength.

[0082] Preferably, if Figure 2 As shown, when the axle bridge 120 is connected to the wheel 110, the rotating shaft 150 is located above the lower edge of the wheel 110, and the distance D between the lower edge of the wheel 110 and the lower edge of the rotating shaft 150 ranges from 100 mm to 300 mm. Thus, when the swing degree of the vehicle body 300 is within the preset range, the structure of the vehicle body 300 can be made as simple as possible.

[0083] like Figure 5As shown, the second support frame 170 includes a bottom 171 and two vertical portions 172. The bottom 171 is arranged along the first horizontal direction D2. Along the first horizontal direction D2, the two vertical portions 172 are arranged at intervals. The end of the bottom 171 is connected to the lower end of the vertical portion 172. In this way, the projection of the vertical portion 172 and the bottom 171 on the projection plane perpendicular to the second horizontal direction D1 forms a U-shaped structure. The upper end of one vertical portion 172 is connected to the upper end of the first elastic member 141. The upper end of the other vertical portion 172 is connected to the upper end of the second elastic member 142. That is, the upper ends of the two vertical portions 172 are respectively connected to the upper end of the first elastic member 141 and the upper end of the second elastic member 142. The bottom 171 is connected to the rotating shaft 150. As a result, the structure of the second support frame 170 is simple.

[0084] Preferably, please refer to Figure 1 , Figure 3 and Figure 5 The bogie further includes an axle cover 190. Along the first horizontal direction D2, the middle portion of the upper surface of the bottom 171 is recessed downward to form a mounting groove 176. The axle cover 190 is connected to the bottom 171. The axle cover 190 is located above the mounting groove 176 to form a rotation hole. The rotation shaft 150 is passed through the rotation hole. Thus, it is convenient to mount the second support frame 170 to the first support frame 160 through the rotation shaft 150.

[0085] Please return Figure 5 , the upper end of the vertical portion 172 has a mounting plate 173. The mounting plate 173 is overlapped to the upper end of the elastic member 140. The mounting plate 173 is connected to the upper end of the elastic member 140 by bolts. Specifically, there are two mounting plates 173. One mounting plate 173 is overlapped to the upper end of the first elastic member 141 and is connected to the first elastic member 141. Another mounting plate 173 is overlapped to the upper end of the second elastic member 142 and is connected to the second elastic member 142. In other words, the two mounting plates 173 are overlapped to the upper end of the first elastic member 141 and the upper end of the second elastic member 142, respectively, and are connected to the first elastic member 141 and the second elastic member 142, respectively. As a result, it is convenient to connect the second support frame 170 to the elastic member 140. In addition, the contact area between the mounting plate 173 and the elastic member 140 is large, and the connection between the mounting plate 173 and the elastic member 140 is firm.

[0086] Preferably, the end of the mounting plate 173 along the first horizontal direction D2 is bent downward to form a bent portion, thereby increasing the strength of the mounting plate 173.

[0087] Preferably, if Figure 1 , Figure 3 and Figure 5As shown, along the second horizontal direction D1, the upper end of the vertical portion 172 is closer to the position of the axle bridge 120 for connecting the wheel 110 (the knuckle 130) than the lower end. In this way, the vertical portion 172 is inclined in the height direction D3 of the bogie. In this way, the upper end of the vertical portion 172 can avoid the first support frame 160. As a result, the structure of the second support frame 170 is simple and the structure of the bogie is compact.

[0088] Preferably, along the second horizontal direction D1, the vertical shock absorber and the first support frame are both located on the same side of the first elastic member 141, and the vertical shock absorber and the first support frame are both located on the same side of the second elastic member 142. Thus, the structure of the bogie is compact.

[0089] Preferably, please continue to refer to Figure 1 , Figure 3 and Figure 5 , along the second horizontal direction D1, the mounting plate 173 and the elastic member 140 are both located on one side of the rotating shaft 150 close to the position of the axle bridge 120 for connecting the wheel 110. That is, along the second horizontal direction D1, the mounting plate 173 and the elastic member 140 are both located on one side of the position of the first support frame 160 close to the axle bridge 120 for connecting the wheel 110 (at the knuckle 130). Thus, the volume of the bogie can be further reduced.

[0090] like Figure 5 As shown, the second support frame 170 is further provided with a reinforcing rib 174. The reinforcing rib 174 is a triangular structure. The reinforcing rib 174 is connected to the upper surface of the mounting plate 173 and the side surface of the upper end of the vertical portion 172. Thus, the strength of the mounting plate 173 can be further increased.

[0091] Specifically, a mounting plate 173 is disposed at the upper end of each of the two vertical portions 172 . The first elastic member 141 is connected to one mounting plate 173 . The second elastic member 142 is connected to the other mounting plate 173 .

[0092] Please return Figures 1 to 3 The bogie further includes a lateral shock absorber 200. The lateral shock absorber 200 is arranged along the first horizontal direction D2. The first end of the lateral shock absorber 200 is connected to the second support frame 170. The second end 201 of the lateral shock absorber is connected to the axle bridge 120. Therefore, the lateral shock absorber 200 can attenuate the vibration of the vehicle body 300 along the first horizontal direction D2, thereby ensuring the stability of the rail vehicle during driving.

[0093] The arrangement of the lateral shock absorber 200, the vertical shock absorber 180, the first support frame 160, the second support frame 170 and the rotating shaft 150 can effectively suppress the lateral roll of the vehicle body 300 (rotation of the vehicle body 300 around an axis parallel to the second horizontal direction D1) and improve the vehicle ride comfort.

[0094] Preferably, if Figure 5 As shown, the second support frame 170 further includes a mounting portion 175. The mounting portion 175 is disposed along the height direction D3 of the bogie. The mounting portion 175 is connected to the vertical portion 172. The first end of the lateral shock absorber 200 is connected to the mounting portion 175. Figures 1 to 3 As shown, the axle bridge 120 is provided with a second mounting seat 230. Along the first horizontal direction D2, the second mounting seat 230 is located at a substantially middle position of the axle bridge 120. In this way, along the first horizontal direction D2, the second mounting seat 230 is located between the two mounting portions 175. The second end 201 of the lateral shock absorber is connected to the second mounting seat 230. As a result, along the first horizontal direction D2, the lateral shock absorber 200 does not protrude from the second support frame 170, and the volume of the bogie is small.

[0095] Specifically, the lateral shock absorber 200 includes a first lateral shock absorber 202 and a second lateral shock absorber 203. Along the first horizontal direction D2, the first lateral shock absorber 202 is located on one side of the rotation shaft 150, and the second lateral shock absorber 203 is located on the other side of the rotation shaft 150. The first end of the first lateral shock absorber 202 is connected to one mounting portion 175, and the second lateral shock absorber 203 is connected to the other mounting portion 175.

[0096] Please refer to Figures 1 to 3 , the bogie further includes two transverse stops 210. The two transverse stops 210 correspond to the two mounting plates 173 one by one. The two transverse stops 210 are connected to the upper end of the second mounting seat 230. Along the first horizontal direction D2, the transverse stop 210 is located between the corresponding mounting plate 173 and the upper end of the second mounting seat 230, so as to block the corresponding mounting plate 173. That is, along the first horizontal direction D2, the two transverse stops 210 are both located between the two mounting plates 173. The two transverse stops 210 can block the two mounting plates 173 respectively. In this way, the second support frame 170 can be prevented from moving toward the second mounting seat 230 along the first horizontal direction D2.

[0097] Preferably, if Figure 2 and Figure 3 As shown, the bogie also includes a guide wheel 240, a guide cantilever 250 and a steering tie rod 260. The guide wheel 240 includes a first guide wheel 241 and a second guide wheel 242. There are two first guide wheels 241 and two second guide wheels 242. Along the second horizontal direction D1, one first guide wheel 241 and one second guide wheel 242 are both located on one side of the steering knuckle 130, and another first guide wheel 241 and another second guide wheel 242 are both located on the other side of the steering knuckle 130.

[0098] The guide cantilever 250 includes a first guide cantilever 251 and a second guide cantilever 252. Along the first horizontal direction D2, the first guide wheel 241 and the first guide cantilever 251 are located on one side of the rotation shaft 150, and the second guide wheel 242 and the second guide cantilever 252 are located on the other side of the rotation shaft 150.

[0099] The first guide wheel 241 is connected to the first guide cantilever 251. The second guide wheel 242 is connected to the second guide cantilever 252. The first guide cantilever 251 is rotatably connected to one steering knuckle 130. The second guide cantilever 252 is rotatably connected to the other steering knuckle 130. The first end of the guide cantilever 250 is connected to the guide wheel 240. The second end of the guide cantilever 250 is connected to the steering knuckle 130.

[0100] The length direction of the steering rod 260 is arranged along the first horizontal direction D2 . One end of the steering rod 260 is rotatably connected to the second end of the first guide cantilever 251 , and the other end of the steering rod 260 is rotatably connected to the second end of the second guide cantilever 252 .

[0101] During the travel of the rail vehicle, if the extension direction of the track beam 310 changes, the track beam 310 acts on the first guide wheel 241 to rotate the first guide cantilever 251, thereby rotating the steering knuckle 130 connected to the first guide cantilever 251. At the same time, the first guide cantilever 251 pulls the second guide cantilever 252 to rotate through the steering tie rod 260, thereby rotating the steering knuckle 130 connected to the second guide cantilever 252. The rotation directions of the two steering knuckles 130, as well as the rotation directions of the first guide cantilever 251 and the second guide cantilever 252 are the same. In this way, the steering of the vehicle body 300 provided with the bogie can be achieved.

[0102] It can be understood that the principle of the track beam 310 changing its extension direction and acting on the second guide wheel 242 to achieve the steering of the vehicle body 300 is roughly the same as the principle of the track beam 310 acting on the first guide wheel 241 to achieve the steering of the vehicle body 300, and will not be repeated here.

[0103] Please refer to Figures 1 to 3 The bogie further includes a traction rod 270 and a stabilizer rod 280. The traction rod 270 includes a first traction rod 271, a second traction rod 272 and a third traction rod 273. Along the first horizontal direction D2, the first traction rod 271 is located on one side of the rotating shaft 150, the second traction rod 272 is located in the middle of the bogie, and the third traction rod 273 is located on the other side of the rotating shaft 150.

[0104] One end of the first traction rod 271 is connected to a front first mounting seat 221. The other end of the first traction rod 271 is used to connect to the car body 300. One end of the third traction rod 273 is connected to another front first mounting seat 221. The other end of the third traction rod 273 is used to connect to the car body 300. The second traction rod 272 is inserted into the triangular structure formed by the first support frame 160. One end of the second traction rod 272 is connected to the upper end of the second mounting seat 230. The other end of the second traction rod 272 is used to connect to the car body 300. Thus, the traction rod 270 is used to transmit the force between the axle bridge 120 and the car body 300 along the second horizontal direction D1, so that the bogie pulls the car body 300 to move along the extension direction of the track beam 310.

[0105] The stabilizer bar 280 is arranged along the first horizontal direction D2. One end of the stabilizer bar 280 is rotatably connected to one rear first mounting seat 222, and the other end of the stabilizer bar 280 is rotatably connected to another rear first mounting seat 222. The upper end of the stabilizer bar 280 is used to be connected to the car body 300. In this way, the car body 300 can be securely connected to the bogie, and the anti-rollover capability of the rail vehicle can be improved.

[0106] The bogie further includes a drive motor 290. The drive motor 290 is connected to the axle bridge 120. The drive motor 290 is connected to the rotating shaft of the wheel 110 to drive the wheel 110 to rotate.

[0107] The present application also provides a rail vehicle, which includes the aforementioned bogie.

[0108] In this embodiment, the rail vehicle includes the aforementioned bogie, the first support frame 160 is used to connect to the car body 300, the second support frame 170 is connected to the upper end of the elastic member 140, the lower end of the elastic member 140 is connected to the axle bridge 120, the first support frame 160 is rotatably connected to the second support frame 170 through the rotating shaft 150, and the second support frame 170 can rotate around the axis of the rotating shaft 150 relative to the first support frame 160. In this way, during the travel of the rail vehicle equipped with a bogie along the extension direction of the track beam 310, if there is a difference in the height positions of the two running surfaces of the track beam 310, the car body 300 swings around the axis of the rotating shaft 150, and the car body 300 has less freedom of swinging, which can improve the riding experience of people in the car body 300.

[0109] The present application has been described through the above-mentioned embodiments, but it should be understood that the above-mentioned embodiments are only for the purpose of example and illustration, and are not intended to limit the present application to the scope of the described embodiments. In addition, it can be understood by those skilled in the art that the present application is not limited to the above-mentioned embodiments, and more variations and modifications can be made according to the teachings of the present application, and these variations and modifications all fall within the scope of protection claimed by the present application. The scope of protection of the present application is defined by the attached claims and their equivalents.

[0110] Unless otherwise defined, the technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art in the technical field of this application. The terms used herein are only for describing specific implementation purposes and are not intended to limit this application. Terms such as "component" and the like appearing in this article may represent either a single part or a combination of multiple parts. Terms such as "installation" and "setting" and the like appearing in this article may represent either a component being directly attached to another component or a component being attached to another component through an intermediate. Features described herein in one embodiment may be applied to another embodiment alone or in combination with other features, unless the feature is not applicable in the other embodiment or otherwise specified.

Claims

1. A bogie for a rail vehicle, characterized in that: The bogie comprises: Axle bridge; a first elastic member and a second elastic member, wherein the lower ends of the first elastic member and the second elastic member are both connected to the axle bridge; a first support frame, the first support frame being configured to be fixedly connected to a body of the rail vehicle; a second support frame connected to an upper end of the first elastic member and an upper end of the second elastic member, the second support frame being rotatably connected to the first support frame; Along the transverse direction of the bogie, the first elastic member and the second elastic member are respectively located on the left and right sides of the rotation axis of the first support frame and the second support frame, The first support frame includes a top arm and a bottom arm, the top arm is used to be connected to the vehicle body, the upper end of the bottom arm is connected to the top arm, the extension direction of the top arm is inclined to the extension direction of the bottom arm, and the second support frame is rotatably connected to the lower end of the bottom arm. The second support frame includes a bottom and two vertical parts. The two vertical parts are spaced apart along the transverse direction of the bogie. The bottom is connected to the lower end of the vertical part. The upper ends of the two vertical parts are respectively connected to the upper end of the first elastic member and the upper end of the second elastic member. The bottom is rotatably connected to the first support frame.

2. The bogie according to claim 1, characterized in that The direction of the rotation axis extends along the longitudinal direction of the bogie.

3. The bogie according to claim 1, characterized in that The first elastic member and the second elastic member are both air springs.

4. The bogie according to claim 1, characterized in that The bogie further includes a vertical shock absorber arranged along the height direction of the bogie, the upper end of the vertical shock absorber is connected to the first support frame, and the lower end of the vertical shock absorber is connected to the axle bridge.

5. The bogie according to claim 4, characterized in that The vertical shock absorber includes a first vertical shock absorber and a second vertical shock absorber. Along the lateral direction of the bogie, the first vertical shock absorber is located on one side of the rotation axis, and the second vertical shock absorber is located on the other side of the rotation axis.

6. The bogie according to claim 1, characterized in that The bogie further includes a lateral shock absorber arranged along a lateral direction of the bogie, a first end of the lateral shock absorber is connected to the second support frame, and a second end of the lateral shock absorber is connected to the axle bridge.

7. The bogie according to claim 6, characterized in that The lateral shock absorber includes a first lateral shock absorber and a second lateral shock absorber. Along the lateral direction of the bogie, the first lateral shock absorber is located on one side of the rotation axis, and the second lateral shock absorber is located on the other side of the rotation axis.

8. The bogie according to claim 4, characterized in that The lower end of the first support frame and the lower end of the second support frame are rotatably connected.

9. The bogie according to claim 1, characterized in that The bottom arm includes a first bottom arm and a second bottom arm, the upper end of the first bottom arm is spaced apart from the upper end of the second bottom arm, and the lower end of the first bottom arm is connected to the lower end of the second bottom arm so that the bottom arm is "V" shaped.

10. The bogie according to claim 4, characterized in that The upper end of the vertical shock absorber is connected to the end of the top arm.

11. The bogie according to claim 1, wherein: The bottom arm includes two plate portions, which are spaced apart along the longitudinal direction of the bogie. The upper end of one plate portion and the upper end of the other plate portion are both connected to the top arm, and the lower end of one plate portion and the lower end of the other plate portion are both connected to the rotating shaft. The first support frame and the second support frame are rotatably connected via the rotating shaft.

12. The bogie according to claim 11, characterized in that When the axle bridge is connected to the wheel, the rotation axis is located above the lower edge of the wheel, and the minimum distance between the lower edge of the wheel and the lower edge of the rotation axis ranges from 100 mm to 300 mm.

13. The bogie according to claim 4, characterized in that Along the longitudinal direction of the bogie, the vertical shock absorber and the first support frame are both located on the same side of the first elastic member, and the vertical shock absorber and the first support frame are both located on the same side of the second elastic member.

14. The bogie according to claim 1, wherein: The upper end of the vertical portion has a mounting plate, and the two mounting plates are respectively overlapped to the upper end of the first elastic member and the upper end of the second elastic member, and are respectively connected to the first elastic member and the second elastic member.

15. The bogie according to claim 14, characterized in that Along the longitudinal direction of the bogie, the mounting plate is located on a side of the first support frame close to a position of the axle bridge for connecting wheels.

16. The bogie according to claim 14, wherein: The second support frame is further provided with a reinforcing rib of a triangular structure, and the reinforcing rib is connected to the top end of the mounting plate and the side surface of the upper end of the vertical portion.

17. The bogie according to claim 14, wherein: The bogie further includes two transverse stops, which are connected to the upper end of the axle bridge and located between the two mounting plates. The two transverse stops are used to block the two mounting plates respectively.

18. The bogie according to claim 1, wherein: The vertical portion is inclined to the height direction of the bogie, and along the longitudinal direction of the bogie, the upper end of the vertical portion is closer to the position of the axle bridge for connecting wheels than the lower end of the vertical portion.

19. A rail vehicle, characterized in that: The rail vehicle comprises a bogie according to any one of claims 1 to 18.

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