CN117657234A - Bogie and rail vehicle - Google Patents

Abstract

The application discloses a bogie and a rail vehicle. The bogie comprises an axle, a first elastic piece, a second elastic piece, a first supporting frame and a second supporting frame; the lower ends of the two elastic pieces are connected to the axle bridge; the first support frame is used for being fixedly connected to a vehicle body of the railway vehicle; the second support frame is connected to the upper ends of the two elastic pieces, and the second support frame is rotatably connected to the first support frame. From this, first support frame is used for being connected to the automobile body, and the second support frame is connected to the upper end of two elastic components, and two elastic components lower extreme are connected to the axle, and first support frame rotationally is connected to the second support frame, like this, at the in-process that the rail vehicle who is provided with the bogie goes along the extending direction of track roof beam, if there is the difference in the high position of two running surfaces of track roof beam, the automobile body swings around the axis of rotation of first support frame and second support frame, and the wobbling degree of freedom of automobile body is few, can improve the riding experience of the personnel that are located the automobile body.

Description

Bogie and rail vehicle

Technical Field

The present application relates to the field of rail transit, in particular to bogies and rail vehicles.

Background

The body of the existing railway vehicle is directly connected with the axle through an elastic piece. Due to the difference in the height positions of the two running surfaces of the load-carrying running wheels of the rail beam, the vehicle body swings under the action of the elastic member during running of the rail vehicle in the extending direction of the rail beam, and the vehicle body swings in an irregular manner along a plurality of degrees of freedom. Thus, the experience of the person located in the vehicle body is poor.

Disclosure of Invention

In the summary, a series of concepts in simplified form are introduced, which will be further described in detail in the detailed description. The summary of the present application is not intended to define the key features and essential features of the claimed subject matter, nor is it intended to be used to determine the scope of the claimed subject matter.

To at least partially solve the above technical problem, the present application provides a bogie for a railway vehicle, the bogie comprising:

a shaft bridge;

the lower ends of the first elastic piece and the second elastic piece are connected to the axle;

the first support frame is used for being fixedly connected to a car body of the railway car;

the second support frame is connected to the upper end of the first elastic piece and the upper end of the second elastic piece and is rotatably connected to the first support frame;

the first elastic piece and the second elastic piece are respectively positioned at the left side and the right side of the rotation axis of the first support frame and the second support frame along the transverse direction of the bogie.

According to the bogie of this application, first support frame is used for being connected to the automobile body, the second support frame is connected to the upper end of first elastic component and the upper end of second elastic component, the lower extreme of first elastic component and the lower extreme of second elastic component are all connected to the axle, first support frame rotationally is connected to the second support frame, like this, at the rail vehicle who is provided with the bogie along the extending direction of track roof beam the in-process that goes, if there is the difference in the high position of two running surfaces of track roof beam, the automobile body swings around the axis of rotation of first support frame and second support frame, automobile body wobbling degree of freedom is few, can improve the riding experience that is located the personnel of automobile body.

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

Optionally, the first elastic member and the second elastic member are air springs.

Optionally, the bogie further comprises a vertical damper disposed along a height direction of the bogie, an upper end of the vertical damper is connected to the first support frame, and a lower end of the vertical damper is connected to the axle.

Optionally, the vertical damper includes a first vertical damper and a second vertical damper, the first vertical damper being located on one side of the rotation axis and the second vertical damper being located on the other side of the rotation axis in a lateral direction of the bogie.

Optionally, the bogie further comprises a transverse damper arranged in a transverse direction of the bogie, a first end of the transverse damper being connected to the second support frame, and a second end of the transverse damper being connected to the axle.

Optionally, the lateral shock absorber includes a first lateral shock absorber located at one side of the rotation axis and a second lateral shock absorber located at the other side of the rotation axis in a lateral direction of the bogie.

Optionally, the lower end of the first support frame is rotatably connected with the lower end of the second support frame.

Optionally, the first support frame includes a top arm and a bottom arm, the top arm is used for being connected to the automobile body, the upper end of bottom arm is connected to the top arm, the extending direction of top arm is inclined to the extending direction of bottom arm, the second support frame is rotatably connected to the lower extreme of bottom arm.

Optionally, the bottom arms include a first bottom arm and a second bottom arm, an upper end of the first bottom arm being spaced apart from an upper end of the second bottom arm, a lower end of the first bottom arm being connected to a lower end of the second bottom arm such that the bottom arms are "V" shaped.

Optionally, the upper end of the vertical damper is connected to the end of the top arm.

Optionally, the bottom arm includes two plate portions, along the longitudinal direction of bogie, two plate portions interval sets up, and the upper end of one plate portion and the upper end of another plate portion are all connected to the top arm, and the lower extreme of one plate portion and the lower extreme of another plate portion are all connected to the axis of rotation, and first support frame and second support frame are rotatably connected through the axis of rotation.

Alternatively, in the case of an axle-to-axle connection wheel, the rotational 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 rotational axis is in the range of 100mm to 300mm.

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 element, and the vertical shock absorber and the first support frame are both located on the same side of the second elastic element.

Optionally, the second support frame includes bottom and two perpendicular portions, along the lateral direction of bogie, two perpendicular portions interval setting, and the bottom is connected to the lower extreme of perpendicular portion, and the upper end of two perpendicular portions is connected to the upper end of first elastic component and the upper end of second elastic component respectively, and the bottom rotationally is connected to first support frame.

Optionally, the upper end of the vertical part is provided with a mounting plate, and the two mounting plates are respectively overlapped to the upper end of the first elastic piece and the upper end of the second elastic piece and are respectively connected to the first elastic piece and the second elastic piece.

Optionally, the mounting plate is located on a side of the first support frame in the longitudinal direction of the bogie, near the axle for connecting the wheels.

Optionally, 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.

Optionally, the bogie further comprises two lateral stoppers connected to the upper end of the axle and located between the two mounting plates, the two lateral stoppers being for blocking the two mounting plates respectively.

Optionally, the upright is inclined to the height of the bogie, and the upper end of the upright is closer to the axle for connecting the wheels than the lower end of the upright in the longitudinal direction of the bogie.

The application also provides a rail vehicle comprising the bogie.

According to the rail vehicle of this application, rail vehicle includes foretell bogie, first support frame is used for being connected to the automobile body, the upper end of second elastic component is connected to the second support frame, the lower extreme of first elastic component and the lower extreme of second elastic component are all connected to the axle, first support frame rotationally is connected to the second support frame, like this, at the in-process that rail vehicle who is provided with the bogie goes along the extending direction of track roof beam, if there is the difference in the high position of two running surfaces of track roof beam, the automobile body swings around the axis of rotation of first support frame and second support frame, automobile body wobbling degree of freedom is few, can improve the riding experience that is located the personnel of automobile body.

Drawings

In order that the advantages of the invention will be readily understood, a more particular description of the invention briefly described above will be rendered by reference to specific embodiments that are illustrated in the appended drawings. Understanding that these drawings depict only typical embodiments of the application and are not therefore to be considered to be limiting of its scope, the application will be described and explained with additional specificity and detail through the use of the accompanying drawings.

FIG. 1 is a schematic perspective view of a portion of a bogie according to a preferred embodiment of the present application;

FIG. 2 is a schematic front view of the truck of FIG. 1 attached to a vehicle body;

FIG. 3 is a schematic perspective view of the truck of FIG. 1;

FIG. 4 is a perspective view of the first support bracket and the rotatable shaft of the truck of FIG. 1 coupled together; and

fig. 5 is a perspective view of the second support bracket and axle cover of the truck of fig. 1 coupled together.

Description of the reference numerals

110: wheel 120: axle bridge

130: knuckle 140: elastic piece

141: first elastic member 142: second elastic piece

150: rotation shaft 160: first support frame

161: top arm 162: bottom arm

163: first bottom arm 164: second bottom arm

165: plate portion 170: second support frame

171: bottom 172: vertical part

173: mounting plate 174: reinforcing rib

175: mounting portion 176: mounting groove

180: vertical damper 181: first vertical shock absorber

182: second vertical damper 190: shaft cover

200: lateral shock absorber 201: second end of transverse damper

202: first lateral shock absorber 203: second transverse shock absorber

210: the lateral stop 220: first mounting seat

221: front first mount 222: rear first mounting seat

230: second mount 240: guide wheel

241: first guide wheel 242: second guide wheel

250: guide cantilever 251: first guiding cantilever

252: second guiding cantilever 260: steering tie rod

270: traction lever 271: first traction rod

272: the second drawbar 273: third traction rod

280: stabilizer bar 290: driving motor

300: body 310: rail beam

Detailed Description

In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present application. However, it will be apparent to one skilled in the art that embodiments of the present application may be practiced without one or more of these details. In other instances, some features that are well known in the art have not been described in order to avoid obscuring the embodiments of the present application.

Preferred embodiments of the present application will be described below with reference to the accompanying drawings. It should be noted that the terms "upper," "lower," and the like are used herein for purposes of illustration only and not limitation.

Herein, ordinal words such as "first" and "second" cited in the present application are merely identifiers and do not have any other meaning, such as a particular order or the like.

In order to provide a thorough understanding of the embodiments of the present application, a detailed structure will be presented in the following description. It will be apparent that embodiments of the present application may be practiced without limitation to the specific details that are set forth by those skilled in the art. Preferred embodiments of the present application are described in detail below, however, the present application may have other embodiments in addition to these detailed descriptions.

The application provides a bogie. Bogies are used for rail vehicles. The rail vehicle includes a vehicle body 300. The bogie is located below the vehicle body 300 and is connected to the vehicle body 300. When the height of the two running surfaces of the track beam 310 carrying the running wheels is different in the running process of the railway vehicle provided with the bogie, the vehicle body 300 rotates around the axis of the rotating shaft 150, the swinging degree of freedom of the vehicle body 300 is less, and the user experience is improved.

Referring to fig. 1 to 5, the bogie includes wheels 110, an axle 120 and a knuckle 130. Axle 120 is a steel structural member. The length direction of the axle 120 is parallel to the first horizontal direction D2 (the left-right direction of fig. 2, that is, an example of the lateral direction of the bogie). Along the first horizontal direction D2, both ends of the axle 120 are provided with knuckles 130. The wheels 110 may be running wheels. The rotational axis of the wheel 110 is connected to a knuckle 130. The wheels 110 are configured to be disposed above the running surface of the track beam 310 and roll on the running surface, so as to drive the vehicle body 300 to run along the extending direction of the track beam 310.

The second horizontal direction D1 (an example of the longitudinal direction of the bogie) is perpendicular to the first horizontal direction D2. In the case where the bogie is connected to the vehicle body 300, the first horizontal direction D2 is parallel to the width direction of the vehicle body 300, the second horizontal direction D1 is parallel to the length direction of the vehicle body 300, and the height direction D3 of the bogie is parallel to the height direction of the vehicle body 300.

As shown in fig. 1 to 3, 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 120.

Referring to fig. 1 to 5, the bogie further includes a rotation shaft 150, a first supporting frame 160 and a second supporting frame 170. The axial direction of the rotation shaft 150 is parallel to the second horizontal direction D1. The first support bracket 160 is for fixed connection to a body 300 of a rail vehicle. The second supporting frame 170 is connected to the upper end of the elastic member 140. The second support 170 is rotatably coupled to the first support 160 through the rotation shaft 150. In this way, the second support 170 is rotatable about the axis of the rotation shaft 150 with respect to the first support 160. That is, the direction of the rotational axis of the first and second support frames 160 and 170 extends in the longitudinal direction of the bogie.

The elastic member 140 includes a first elastic member 141 and a second elastic member 142. The lower ends of the first and second elastic members 141 and 142 are connected to the axle 120. The second supporting 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 at one side of the rotation shaft 150, and the second elastic member 142 is located at the other side of the rotation shaft 150. That is, the first and second elastic members 141 and 142 are located at left and right sides of the rotation axes of the first and second supporting frames 160 and 170, respectively.

As shown in fig. 2, in the course of the rail vehicle provided with the bogie traveling in the extending direction of the rail beam 310, the gravity of the vehicle body 300 is transferred to the running surface after passing through the first support frame 160, the rotation shaft 150, the second support frame 170, the elastic member 140, the axle 120 and the running wheels in order. During the travel of the railway vehicle provided with the bogie in the extending direction of the railway beam 310, if there is a difference in the height positions of the two running surfaces of the railway beam 310, the first support frame 160 is rotated about the axis of the rotation shaft 150 with respect to the second support frame 170 to swing the vehicle body 300 about the axis of the rotation shaft 150. In this way, the degree of freedom in swinging the vehicle body 300 is small, and the riding experience of the person located in the vehicle body 300 can be improved.

In this embodiment, the first support frame 160 is used for being connected to the vehicle 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 120, the first support frame 160 is rotatably connected to the second support frame 170 through the rotation shaft 150, and the second support frame 170 can rotate relative to the first support frame 160 around the axis of the rotation shaft 150, so that, in the process that the railway vehicle provided with the bogie runs along the extending 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 vehicle body 300 swings around the axis of the rotation shaft 150, the degree of freedom of swinging of the vehicle body 300 is small, and the riding experience of the person located in the vehicle body 300 can be improved.

Preferably, referring to fig. 4, the first supporting frame 160 includes a top arm 161 and a bottom arm 162. The top arm 161 is disposed along the first horizontal direction D2. The top arm 161 is for connection 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 extending direction of the top arm 161 is inclined to the extending direction of the bottom arm 162. The rotation shaft 150 is connected to the lower end of the bottom arm 162. This reduces the position of the rotation shaft 150 as much as possible, and reduces the degree of swing of the vehicle body 300.

Preferably, as shown in fig. 4, 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 is spaced apart from the upper end of the second bottom arm 164. The lower end of the first bottom arm 163 is connected to the lower end of the second bottom arm 164. Thus, bottom arm 162 is "V" shaped. The top arm 161 and the bottom arm 162 form a triangular structure. One corner of the triangle structure is located at the lower end of the first support frame 160. The rotation shaft 150 is connected to the corners of the triangle structure. Thus, the first supporting frame 160 has a stable structure and high strength.

Returning to fig. 1-3, the truck further includes a vertical shock absorber 180. The vertical damper 180 includes a first vertical damper 181 and a second vertical damper 182. Along the first horizontal direction D2, the first vertical damper 181 is located at one side of the rotation shaft 150, and the second vertical damper 182 is located at the other side of the rotation shaft 150.

The longitudinal direction of the vertical damper 180 is set along the height direction D3 of the bogie. The upper end of the vertical damper 180 is connected to the top arm 161. The lower end of the axle 120 extends in the second horizontal direction D1 to form the first mounting seat 220. The first mount 220 includes a front first mount 221 and a rear first mount 222. Along the second horizontal direction D1, the front first mount 221 is located at one side of the knuckle 130, and the rear first mount 222 is located at the other side of the knuckle 130. The front first mount 221 and the rear first mount 222 are two. Along the first horizontal direction D2, one front first mount 221 and one rear first mount 222 are located on one side of the rotation shaft 150, and the other front first mount 221 and the other rear first mount 222 are located on the other side of the rotation shaft 150.

The lower end of the vertical damper 180 is connected to the front first mounting seat 221. This dampens the vibration of the vehicle body 300 in the height direction D3 of the bogie, and stabilizes the rail vehicle during running.

Further preferably, the upper end of the vertical damper 180 is connected to the end of the top arm 161. This can increase the distance between the vertical damper 180 and the rotation shaft 150 as much as possible, and further attenuate the vibration of the vehicle body 300 along the height of the bogie.

Returning to fig. 4, the bottom arm 162 includes two plate portions 165. In the second horizontal direction D1, two plate portions 165 are provided at intervals. 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 rotation shaft 150. Thus, the bottom arm 162 has high strength.

Preferably, as shown in fig. 2, in the case where the axle 120 is connected to the wheel 110, the rotation 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 rotation shaft 150 ranges from 100mm to 300mm. Thus, when the degree of swing of the vehicle body 300 is within the preset range, the structure of the vehicle body 300 can be made as simple as possible.

As shown in fig. 5, the second support frame 170 includes a bottom 171 and two vertical portions 172. The bottom 171 is disposed along the first horizontal direction D2. Along the first horizontal direction D2, two vertical portions 172 are disposed at intervals. The end of the bottom 171 is connected to the lower end of the upright 172. In this way, the projection of the vertical portion 172 and the bottom portion 171 on the projection plane perpendicular to the second horizontal direction D1 constitutes a U-shaped structure. An upper end of one of the upright portions 172 is connected to an upper end of the first elastic member 141. The upper end of the other upright portion 172 is connected to the upper end of the second elastic member 142. That is, the upper ends of the two upright portions 172 are connected to the upper ends of the first elastic member 141 and the second elastic member 142, respectively. The bottom 171 is connected to the rotation shaft 150. Thereby, the second supporting frame 170 has a simple structure.

Preferably, referring to fig. 1, 3 and 5, the bogie further comprises an axle cover 190. In the first horizontal direction D2, a substantially middle portion of the upper surface of the bottom 171 is recessed downward to constitute a mounting groove 176. A shaft cover 190 is connected to the bottom 171. The shaft cover 190 is positioned above the mounting groove 176 to form a rotation hole. The rotation shaft 150 is inserted into the rotation hole. Thereby, the second support 170 is conveniently mounted to the first support 160 through the rotation shaft 150.

Returning to fig. 5, the upper end of the upright 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, the mounting plates 173 are two. 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. The other mounting plate 173 is overlapped to the upper end of the second elastic member 142 and is connected to the second elastic member 142. That is, the two mounting plates 173 overlap the upper ends of the first and second elastic members 141 and 142, respectively, and are connected to the first and second elastic members 141 and 142, respectively. Thereby, the second support 170 is conveniently connected 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.

Preferably, an end portion of the mounting plate 173 in the first horizontal direction D2 is bent downward to constitute a bent portion. Thereby, the strength of the mounting plate 173 is high.

Preferably, as shown in fig. 1, 3 and 5, in the second horizontal direction D1, the upper end of the upright portion 172 is closer to the position (at the knuckle 130) of the axle 120 for connecting the wheels 110 than the lower end. In this way, the upright portion 172 is inclined to the height direction D3 of the bogie. Thus, the upper end of the upright portion 172 can be retracted from the first support frame 160. Thus, the second support 170 is simple in structure and the bogie is compact in structure.

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

Preferably, with continued reference to fig. 1, 3 and 5, in the second horizontal direction D1, the mounting plate 173 and the elastic member 140 are each located on a side of the rotation shaft 150 near the axle 120 for connecting the wheels 110. That is, in the second horizontal direction D1, the mounting plate 173 and the elastic member 140 are both located on the side of the first support frame 160 near the position (at the knuckle 130) of the axle 120 for connecting the wheels 110. Thereby, the volume of the bogie can be further reduced.

As shown in fig. 5, the second supporting frame 170 is further provided with a reinforcing rib 174. The reinforcing ribs 174 have a triangular structure. The reinforcing ribs 174 are attached to the upper surface of the mounting plate 173 and the side of the upper end of the upright portion 172. Thereby, the strength of the mounting plate 173 can be further increased.

Specifically, the upper ends of both upright portions 172 are provided with mounting plates 173. The first elastic member 141 is connected to one mounting plate 173. The second elastic member 142 is connected to another mounting plate 173.

Returning to fig. 1-3, the truck further includes a transverse shock absorber 200. The lateral shock absorber 200 is disposed along the first horizontal direction D2. The first end of the lateral shock absorber 200 is connected to the second support bracket 170. The second end 201 of the transverse damper is connected to the axle 120. Thus, the lateral shock absorber 200 can attenuate the vibration of the vehicle body 300 in the first horizontal direction D2, ensuring the smoothness when the railway vehicle travels.

The arrangement of the transverse damper 200, the vertical damper 180, the first support frame 160, the second support frame 170, and the rotation shaft 150 can effectively suppress the roll of the vehicle body 300 (the rotation of the vehicle body 300 about the axis parallel to the second horizontal direction D1), and improve the riding comfort of the vehicle.

Preferably, as shown in fig. 5, the second support frame 170 further includes a mounting portion 175. The mounting portion 175 is provided along the height direction D3 of the bogie. The mounting portion 175 is connected to the upright portion 172. A first end of lateral shock absorber 200 is connected to mounting portion 175. As shown in fig. 1 to 3, the axle 120 is provided with a second mount 230. The second mount 230 is located at a substantially middle position of the axle 120 along the first horizontal direction D2. Thus, the second mount 230 is located between the two mount sections 175 in the first horizontal direction D2. The second end 201 of the transverse shock absorber is connected to a second mount 230. Thus, the lateral shock absorber 200 does not protrude from the second support frame 170 in the first horizontal direction D2, and the bogie is small in size.

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

Referring to fig. 1-3, the bogie further comprises two lateral stops 210. The two lateral stops 210 are in one-to-one correspondence with the two mounting plates 173. Two lateral stops 210 are connected to the upper end of the second mount 230. The lateral stopper 210 is located between the corresponding mounting plate 173 and the upper end of the second mounting seat 230 in the first horizontal direction D2 for blocking the corresponding mounting plate 173. That is, in the first horizontal direction D2, both of the lateral stoppers 210 are located between the two mounting plates 173. The two lateral stops 210 can each block two mounting plates 173. Thereby, the second support frame 170 can be prevented from moving toward the second mount 230 in the first horizontal direction D2.

Preferably, as shown in fig. 2 and 3, the bogie further comprises 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. The number of the first guide wheels 241 and the second guide wheels 242 is two. In the second horizontal direction D1, one first guide wheel 241 and one second guide wheel 242 are located on one side of the knuckle 130, and the other first guide wheel 241 and the other second guide wheel 242 are located on the other side of the knuckle 130.

Guide cantilever 250 includes a first guide cantilever 251 and a second guide cantilever 252. In the first horizontal direction D2, the first guide wheel 241 and the first guide cantilever 251 are located at one side of the rotation shaft 150, and the second guide wheel 242 and the second guide cantilever 252 are located at the other side of the rotation shaft 150.

The first guide wheel 241 is connected to the first guide cantilever 251. The second guide wheel 242 is connected to a second guide cantilever 252. The first guide cantilever 251 is rotatably connected to one knuckle 130. Second guide boom 252 is rotatably coupled to another knuckle 130. Wherein a first end of guide cantilever 250 is coupled to guide wheel 240. A second end of the guide cantilever 250 is connected to the knuckle 130.

The length direction of the tie rod 260 is set along the first horizontal direction D2. One end of the tie rod 260 is rotatably coupled to the second end of the first guide boom 251 and the other end of the tie rod 260 is rotatably coupled to the second end of the second guide boom 252.

During the running of the railway vehicle, if the extending direction of the rail beam 310 is changed, the rail beam 310 acts on the first guide wheel 241 to rotate the first guide cantilever 251, thereby rotating the knuckle 130 connected to the first guide cantilever 251. At the same time, first guide cantilever 251 pulls second guide cantilever 252 to rotate through steering linkage 260, thereby rotating knuckle 130 coupled to second guide cantilever 252. The rotational directions of the two knuckles 130, and the rotational directions of the first guide cantilever 251 and the second guide cantilever 252 are the same. In this way, steering of the vehicle body 300 provided with the bogie can be achieved.

It will be appreciated that the principle of the track beam 310 acting on the second guide wheel 242 to steer the vehicle body 300 when the extending direction of the track beam 310 is changed is substantially the same as the principle of the track beam 310 acting on the first guide wheel 241 to steer the vehicle body 300, and will not be described again.

Referring to fig. 1-3, the bogie further includes a traction rod 270 and a stabilizer rod 280. The drawbar 270 includes a first drawbar 271, a second drawbar 272, and a third drawbar 273. In the first horizontal direction D2, the first traction lever 271 is located at one side of the rotation shaft 150, the second traction lever 272 is located at the middle position of the bogie, and the third traction lever 273 is located at the other side of the rotation shaft 150.

One end of the first traction lever 271 is connected to one front first mount 221. The other end of the first traction lever 271 is for connection to the vehicle body 300. One end of the third drawbar 273 is connected to the other front first mount 221. The other end of the third traction lever 273 is for connection to the vehicle body 300. The second traction rod 272 penetrates through the triangle 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 mount 230. The other end of the second drawbar 272 is adapted to be coupled to the vehicle body 300. Thereby, the traction lever 270 serves to transmit a force in the second horizontal direction D1 between the axle 120 and the vehicle body 300, thereby moving the bogie-towing vehicle body 300 in the extending direction of the track beam 310.

The stabilizer bar 280 is disposed along the first horizontal direction D2. One end of the stabilizer bar 280 is rotatably connected to one rear first mount 222, and the other end of the stabilizer bar 280 is rotatably connected to the other rear first mount 222. The upper end of stabilizer bar 280 is adapted to be coupled to vehicle body 300. Thereby, the vehicle body 300 can be firmly connected to the bogie, while the anti-roll ability of the railway vehicle can be improved.

The bogie further comprises a drive motor 290. The drive motor 290 is connected to the axle 120. The driving motor 290 is connected to a rotation shaft of the wheel 110 for driving rotation of the wheel 110.

The application also provides a rail vehicle. The rail vehicle comprises the bogie described above.

In this embodiment, the railway vehicle includes the bogie as described above, the first support frame 160 is used for being connected to the vehicle 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 120, the first support frame 160 is rotatably connected to the second support frame 170 through the rotation shaft 150, and the second support frame 170 can rotate around the axis of the rotation shaft 150 relative to the first support frame 160, so that, if there is a difference in the height positions of the two running surfaces of the railway beam 310 during the running of the railway vehicle provided with the bogie along the extending direction of the railway beam 310, the vehicle body 300 swings around the axis of the rotation shaft 150, the degree of freedom of swing of the vehicle body 300 is small, and the riding experience of the person located in the vehicle body 300 can be improved.

The present application has been illustrated by the above-described embodiments, but it should be understood that the above-described embodiments are for purposes of illustration and description only and are not intended to limit the present application to the scope of the described embodiments. Further, it will be understood by those skilled in the art that the present application is not limited to the above-described embodiments, and that many variations and modifications are possible in light of the teachings of the present application, which variations and modifications are within the scope of what is claimed herein. The scope of protection of the present application is defined by the appended claims and their equivalents.

Unless defined otherwise, technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular implementations only and is not intended to be limiting of the present application. Terms such as "component" as used herein may refer to either a single part or a combination of parts. Terms such as "mounted," "disposed," and the like as used herein may refer to one component being directly attached to another component or to one component being attached to another component through an intermediary. Features described herein in one embodiment may be applied to another embodiment alone or in combination with other features unless the features are not applicable or otherwise indicated in the other embodiment.

Claims (21)

1. A bogie for a railway vehicle, the bogie comprising:

a shaft bridge;

the lower ends of the first elastic piece and the second elastic piece are connected to the axle;

a first support for fixed connection to a body of the rail vehicle;

a second support frame connected to the upper end of the first elastic member and the upper end of the second elastic member, the second support frame being rotatably connected to the first support frame;

the first elastic piece and the second elastic piece are respectively positioned at the left side and the right side of the rotation axis of the first support frame and the second support frame along the transverse direction of the bogie.

2. The bogie of claim 1, wherein the direction of the rotational axis extends in a longitudinal direction of the bogie.

3. The bogie of claim 1, wherein the first elastic element and the second elastic element are each air springs.

4. The bogie of claim 1, further comprising a vertical shock absorber disposed along a height direction of the bogie, an upper end of the vertical shock absorber being connected to the first support frame, a lower end of the vertical shock absorber being connected to the axle.

5. The bogie of claim 4, wherein the vertical shock absorber comprises a first vertical shock absorber and a second vertical shock absorber, the first vertical shock absorber being located on one side of the rotational axis and the second vertical shock absorber being located on the other side of the rotational axis in a lateral direction of the bogie.

6. The bogie of claim 1, further comprising a transverse shock absorber disposed in a transverse direction of the bogie, a first end of the transverse shock absorber being connected to the second support frame and a second end of the transverse shock absorber being connected to the axle.

7. The bogie of claim 6, wherein the lateral shock absorber comprises a first lateral shock absorber and a second lateral shock absorber, the first lateral shock absorber being located on one side of the rotational axis and the second lateral shock absorber being located on the other side of the rotational axis in a lateral direction of the bogie.

8. The bogie of claim 4, wherein the lower end of the first supporting frame is rotatably connected to the lower end of the second supporting frame.

9. The bogie of claim 8, wherein the first support frame comprises a top arm and a bottom arm, the top arm being for connection to the vehicle body, the bottom arm being connected to the top arm at an upper end thereof, the top arm extending in a direction oblique to the bottom arm extending direction, the second support frame being rotatably connected to a lower end thereof.

10. The bogie of claim 9, wherein the bottom arm comprises a first bottom arm and a second bottom arm, an upper end of the first bottom arm being spaced apart from an upper end of the second bottom arm, a lower end of the first bottom arm being connected to a lower end of the second bottom arm such that the bottom arm is "V" shaped.

11. The bogie of claim 9, wherein an upper end of the vertical shock absorber is connected to an end of the top arm.

12. The bogie of claim 9, wherein the bottom arm comprises two plate portions, the two plate portions being disposed at intervals in a longitudinal direction of the bogie, an upper end of one plate portion and an upper end of the other plate portion being connected to the top arm, a lower end of one plate portion and a lower end of the other plate portion being connected to a rotation shaft, the first support frame and the second support frame being rotatably connected through the rotation shaft.

13. The bogie of claim 12, wherein the rotational axis is located above the lower edge of the wheel in the case where the axle connects the wheels, and the minimum distance between the lower edge of the wheel and the lower edge of the rotational axis ranges from 100mm to 300mm.

14. The bogie of claim 4, wherein the vertical shock absorber and the first support frame are both located on the same side of the first elastic element in the longitudinal direction of the bogie, and the vertical shock absorber and the first support frame are both located on the same side of the second elastic element.

15. The bogie according to claim 1, wherein the second supporting frame comprises a bottom portion and two upright portions, the two upright portions being disposed at intervals in a lateral direction of the bogie, the bottom portion being connected to lower ends of the upright portions, upper ends of the two upright portions being connected to upper ends of the first elastic member and upper ends of the second elastic member, respectively, the bottom portion being rotatably connected to the first supporting frame.

16. The bogie of claim 15, wherein the upper end of the upright portion has mounting plates, and the two mounting plates overlap to the upper ends of the first elastic member and the second elastic member, respectively, and are connected to the first elastic member and the second elastic member, respectively.

17. The bogie of claim 16, wherein the mounting plate is located on a side of the first support frame adjacent to a location of the axle for connection of wheels in a longitudinal direction of the bogie.

18. The bogie of claim 16, wherein the second supporting frame is further provided with a reinforcing rib of a triangular structure, the reinforcing rib being connected to a top end of the mounting plate and a side surface of an upper end of the upright portion.

19. The bogie of claim 16, further comprising two lateral stops connected to an upper end of the axle and located between the two mounting plates, the two lateral stops for blocking the two mounting plates, respectively.

20. The bogie of claim 15, wherein the upright portion is inclined to a height direction of the bogie, and an upper end of the upright portion is closer to a position of the axle for connecting wheels relative to a lower end of the upright portion in a longitudinal direction of the bogie.

21. A rail vehicle, characterized in that it comprises a bogie according to any one of claims 1 to 20.