CN113844484B

CN113844484B - Bogie and have its rail vehicle

Info

Publication number: CN113844484B
Application number: CN202010599054.XA
Authority: CN
Inventors: 李百成; 王升; 蔡永宾
Original assignee: BYD Co Ltd
Current assignee: BYD Co Ltd
Priority date: 2020-06-28
Filing date: 2020-06-28
Publication date: 2023-06-13
Anticipated expiration: 2040-06-28
Also published as: CN113844484A; WO2022001609A1

Abstract

The invention discloses a bogie and a railway vehicle with the same, wherein the bogie comprises: a frame; a brake provided on the frame; the sound insulation cover is in sealing connection with the framework, the sound insulation cover and the framework jointly define an accommodating space, and the brake is arranged in the accommodating space; the transverse stop is arranged on the sound insulation cover and is positioned on one side, far away from the center of the framework, of the sound insulation cover. According to the bogie disclosed by the invention, air noise generated by a brake can be effectively isolated, so that the noise in a vehicle and the noise outside the vehicle are effectively reduced. Moreover, the volume of the sound insulation cover is smaller, the structure is compact, and the occupied space of the whole bogie can be reduced. In addition, the transverse stop is arranged on the sound insulation cover, so that the integration level of the bogie is better, and the structural compactness of the bogie can be further improved.

Description

Bogie and have its rail vehicle

Technical Field

The invention relates to the technical field of rail transit, in particular to a bogie and a rail vehicle with the bogie.

Background

In the related art, a brake disc may have a larger disturbance effect on air when a railway vehicle runs at a high speed, so that larger air noise is generated, on one hand, the riding comfort of passengers in the railway vehicle is greatly negatively affected, and on the other hand, the noise outside the vehicle has a larger negative effect on the surrounding environment.

Disclosure of Invention

The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, an object of the present invention is to provide a bogie which has a good effect of isolating air noise generated by a brake, effectively reduces noise in a vehicle and noise outside the vehicle, and has a small volume and low cost.

Another object of the invention is to propose a railway vehicle with a bogie as described above.

A bogie according to an embodiment of a first aspect of the present invention includes: a frame; a brake provided on the frame; the sound insulation cover is in sealing connection with the framework, the sound insulation cover and the framework jointly define an accommodating space, and the brake is arranged in the accommodating space; the transverse stop is arranged on the sound insulation cover and is positioned on one side, far away from the center of the framework, of the sound insulation cover.

According to the bogie disclosed by the embodiment of the invention, the sound insulation cover is in sealing connection with the framework, the sound insulation cover and the framework jointly define the accommodating space, and the brake is arranged in the accommodating space, so that when the bogie is applied to a railway vehicle, the air noise generated by the brake can be well isolated, and the noise in the vehicle and the noise outside the vehicle are effectively reduced, the riding comfort of passengers in the vehicle is improved, and the influence of the noise outside the vehicle on the surrounding environment can be avoided. Moreover, through setting up horizontal backstop, horizontal backstop can play fine backstop effect, avoids producing great lateral displacement between rail vehicle and the bogie to can guarantee rail vehicle's operational safety. In addition, the volume of sound insulation cover is less, compact structure can reduce the occupation space of whole bogie, and can reduce materials cost. In addition, through setting up horizontal backstop on the sound insulation cover, make the integrated level of bogie better to can further improve the compact structure of bogie.

According to some embodiments of the invention, the sound-proof enclosure comprises: the first cover body is arranged above the transverse stop and is in sealing connection with the framework; the second cover body is arranged below the transverse stop and is in sealing connection with the framework; the stop mounting frame is arranged between the first cover body and the second cover body, and the transverse stop is mounted on the stop mounting frame.

According to some embodiments of the invention, the brake comprises a brake disc and a brake caliper for clamping or releasing the brake disc, the brake caliper being opposite to the first cover and the width of the first cover being larger than the width of the second cover.

According to some embodiments of the invention, the first cover comprises: the first lower cover body is connected above the stop mounting frame in a sealing way; the first upper cover body is detachably connected to the upper portion of the first lower cover body, the brake clamp is opposite to the first upper cover body, and the width of the first upper cover body is larger than that of the first lower cover body.

According to some embodiments of the invention, the first lower housing is detachably connected to the lateral stop.

According to some embodiments of the invention, the bogie further comprises a suspension device provided on the frame, the suspension device being located on a side of the sound insulation cover remote from the brake, the suspension device and the lateral stop being opposite each other, and an upper surface of the suspension device being lower than a lower end surface of the first upper cover body.

According to some embodiments of the invention, the bogie further comprises a running wheel connected to the brake, the running wheel being at least partially above the upper surface of the suspension device and the central axis of the running wheel being below the upper surface of the suspension device.

According to some embodiments of the invention, the frame comprises an electric assembly mounting portion, one side of the electric assembly mounting portion is in sealing connection with the sound insulation cover, the other side of the electric assembly mounting portion is connected with an electric assembly, the electric assembly is used for outputting braking torque, the electric assembly mounting portion is provided with a through mounting opening, and the electric assembly is at least partially accommodated in the mounting opening.

According to some embodiments of the invention, the first cover has an access opening formed therein, the access opening being opposite the brake, and a removable access cover sealed thereto.

According to some embodiments of the invention, the access opening is provided with an access cover mounting seat protruding out of the outer surface of the sound insulation cover, an opening communicated with the access opening is formed on the access cover mounting seat, and the access cover covers the opening.

According to some embodiments of the invention, the first cover body is provided with an extension part extending horizontally away from the accommodating space, the access cover mounting seat is arranged on the extension part, one side of the extension part away from the accommodating space is provided with a limiting part extending upwards, and the lower end of the access cover is stopped between the limiting part and the access cover mounting seat.

According to some embodiments of the invention, the sound insulation cover includes a support layer, a damping layer, a sound absorbing layer, and a sound insulation layer sequentially disposed in a direction away from a center of the receiving space.

According to some embodiments of the invention, the second cover is detachably connected to the lateral stop.

A rail vehicle according to an embodiment of the second aspect of the invention comprises a bogie according to an embodiment of the first aspect of the invention described above.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

FIG. 1 is a perspective view of a bogie according to an embodiment of the present invention;

FIG. 2 is a side view of a bogie according to an embodiment of the present invention;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;

FIG. 4 is an enlarged view of portion B of FIG. 3;

FIG. 5 is a partial perspective view of a bogie according to an embodiment of the present invention;

FIG. 6 is an enlarged view of portion C of FIG. 5;

FIG. 7 is an enlarged view of portion D of FIG. 5;

FIG. 8 is an enlarged view of the portion E enclosed in FIG. 5;

FIG. 9 is a perspective view of an electromotive assembly according to an embodiment of the present invention;

fig. 10 is a schematic structural view of a railway vehicle according to an embodiment of the present invention.

Reference numerals:

100: a bogie;

1: a frame; 11: a brake; 111: a brake disc; 112: a brake caliper;

12: an electric assembly mounting portion; 13: a frame body; 14: a hanging installation part;

15: a guide wheel mounting part; 16: a stabilizer wheel mounting portion;

2: a lateral stop; 3: a sound insulation cover; 31: a first cover; 311: a first lower cover;

3111: a first burring part; 3112: a second burring part; 312: a first upper cover;

313: an extension; 3131: a limit part; 32: a second cover; 33: an accommodation space;

34: a support layer; 35: a damping layer; 36: a sound absorbing layer; 37: a sound insulation layer;

4: an access cover; 41: flanging; 5: an access cover mounting base; 6: a running wheel;

61: a rim; 7: an electric assembly; 8: a guide wheel; 9: a stabilizing wheel; 10: a suspension device;

200: a rail vehicle.

Detailed Description

Embodiments of the present invention will be described in detail below, by way of example with reference to the accompanying drawings.

A bogie 100 according to an embodiment of the first aspect of the present invention is described below with reference to fig. 1 to 10. The bogie 100 can be applied to a rail vehicle 200 such as a straddle-type monorail vehicle. In the following description of the present application, the bogie 100 is illustrated as applied to the railway vehicle 200.

As shown in fig. 1-3 and 5, a bogie 100 according to an embodiment of the first aspect of the present invention includes a frame 1, a brake 11, a sound insulation cover 3, and a lateral stopper 2. The brake 11 is provided on the frame 1. The sound insulation cover 3 is connected with the framework 1 in a sealing way.

In this application, the term "sealed connection of the sound-proof cover 3 and the frame 1" means that the connection of the sound-proof cover 3 and the frame 1 forms a closed pattern. That is to say, the connection of the sound insulation cover 3 and the framework 1 forms a closed loop structure which is connected end to end.

As shown in fig. 3, the sound insulation cover 3 and the frame 1 define a housing space 33 together, and the stopper 11 is provided in the housing space 33. In some examples of the invention, referring to fig. 1-3 and 5, the sound-proof enclosure 3 is attached to the side of the frame 1, and the side of the sound-proof enclosure 3 facing the frame 1 may be open.

Thus, when the bogie 100 is applied to the railway vehicle 200, since the brake 11 is disposed in the accommodation space 33, noise generated by high-speed rotation of the brake 11, such as air broadband noise, can be isolated in the accommodation space 33, so that in-vehicle noise and out-of-vehicle noise can be well reduced, and the influence of out-of-vehicle noise on the surrounding environment can be avoided while improving riding comfort of passengers in the vehicle. In addition, the volume of the sound insulation cover 3 is smaller, the structure is compact, and the material cost can be reduced.

The transverse stop 2 is arranged on the sound insulation cover 3, and the transverse stop 2 is positioned on one side of the sound insulation cover 3 away from the center of the framework 1. Therefore, during the running process of the rail vehicle 200, when a large lateral displacement is generated between the body of the rail vehicle 200 and the framework 1, the lateral stop 2 can play a good role in stopping, so that the running safety of the rail vehicle 200 can be ensured.

According to the bogie 100 of the embodiment of the present invention, by sealing the sound insulation cover 3 and the frame 1, and making the sound insulation cover 3 and the frame 1 define the accommodating space 33 together and the brake 11 is disposed in the accommodating space 33, when the bogie 100 is applied to the railway vehicle 200, air noise generated by the brake 11 can be well isolated, thereby effectively reducing noise in the vehicle and noise outside the vehicle, improving riding comfort of passengers in the vehicle, and avoiding influence of noise outside the vehicle on surrounding environment. Moreover, by providing the lateral stopper 2, the lateral stopper 2 can play a good role of stopping, and avoid a large lateral displacement between the railway vehicle 200 and the bogie 100, thereby ensuring the running safety of the railway vehicle 200. In addition, the volume of the sound insulation cover 3 is smaller, the structure is compact, the occupied space of the whole bogie 100 can be reduced, and the material cost can be reduced. In addition, by providing the lateral stopper 2 on the noise insulation cover 3, the integration degree of the bogie 100 is improved, and thus the structural compactness of the bogie 100 can be further improved.

In some embodiments of the invention, referring to fig. 1-3 and 5, the sound-proof enclosure 3 comprises a first enclosure 31, a second enclosure 32 and a stop mounting, the first enclosure 31 being arranged above the lateral stops 2 and the first enclosure 31 being in sealing connection with the frame 1. The second cover 32 is arranged below the transverse stop 2, and the second cover 32 is in sealing connection with the frame 1. The stopper mounting frame is installed between the first cover 31 and the second cover 32, and the lateral stopper 2 is mounted on the stopper mounting frame. Therefore, by arranging the first cover body 31, the second cover body 32 and the stop mounting frame, the installation and the disassembly of the sound insulation cover 3 are convenient while the in-car noise and the out-of-car noise are effectively reduced. In addition, the stopper is installed between the first cover 31 and the second cover 32, so that the integration of the bogie 100 can be further improved, and the bogie 100 can be ensured to have high structural compactness.

In some examples of the present invention, as shown in fig. 1 to 3 and 5, the first cover 31 and the second cover 32 are each attached to a side of the frame 1, and a side of the first cover 31 and the second cover 32 facing the frame 1 may be opened. The lower end of the first cover 31 is connected with the transverse stop 2 in a sealing way, and the side surface of the first cover 31 is connected with the framework 1 in a sealing way. The upper end of the second cover 32 is connected with the transverse stop 2 in a sealing way, and the side surface of the second cover 32 is connected with the framework 1 in a sealing way. The arrangement is simple and compact in structure, the occupied space of the sound insulation cover 3 is small, and the arrangement is convenient.

In some embodiments of the invention, the bogie 100 can also include a vertical stop. Therefore, when a large longitudinal displacement is generated between the body of the railway vehicle 200 and the bogie 100, the vertical stopper can play a good role in stopping, so that the running safety of the railway vehicle 200 can be ensured.

In some embodiments of the present invention, as shown in fig. 3, the brake 11 includes a brake disc 111 and a brake caliper 112, the brake caliper 112 is used to clamp or release the brake disc 111, the brake caliper 112 is opposite to the first cover 31, and the width of the first cover 31 is greater than the width of the second cover 32. Therefore, the brake clamp 112 can be accommodated in the accommodating space 33 between the first cover 31 and the framework 1 by making the width of the first cover 31 larger than that of the second cover 32, so that the width of the second cover 32 can be smaller, the die structure is simple, the cost can be reduced, the structure of the whole sound insulation cover 3 is more compact, and the space is saved.

In some embodiments of the present invention, referring to fig. 3 and 5, the first cover 31 includes a first lower cover 311 and a first upper cover 312. The first lower cover 311 is connected above the transverse stop 2 in a sealing manner, the first upper cover 312 is detachably connected above the first lower cover 311, the brake clamp 112 is opposite to the first upper cover 312, and the width of the first upper cover 312 is larger than that of the first lower cover 311. Therefore, the width of the first upper cover 312 is larger than that of the first lower cover 311, and the brake clamp 112 can be accommodated in the accommodating space 33 between the first upper cover 312 and the frame 1, so that the width of the first lower cover 311 can be smaller, the die structure is simple, the cost can be reduced, and the structure of the first cover 31 is more compact, and the space is saved.

In some examples of the present invention, referring to fig. 3, the width of the first lower cover 311 and the width of the second cover 32 may be substantially equal, and the width of the first lower cover 311 and the width of the second cover 32 are smaller than the width of the first upper cover 312, so that the structure of the sound insulation cover 3 may be more compact, the occupied space may be reduced, and the arrangement may be convenient.

In some embodiments of the present invention, referring to fig. 5 and 8, the first lower cover 311 is detachably connected to the lateral stopper 2. So set up, when realizing the reliable connection between first lower cover body 311 and the horizontal backstop 2, simple structure conveniently installs and removes.

In some examples of the present invention, as shown in fig. 5 and 8, the lower end of the first lower cover 311 may be provided with a first burring 3111 extending horizontally outward, and the first burring 3111 may be connected to the lateral stopper 2 by a threaded fastener such as a bolt. Therefore, through the arrangement, the first lower cover body 311 can be firmly connected with the transverse stop 2, and the transverse stop is convenient to install and detach, and has lower cost.

In some embodiments of the invention, referring to fig. 1, the bogie 100 further comprises a suspension device 10, the suspension device 10 is provided on the frame 1, and the suspension device 10 is located on the side of the sound insulation cover 3 away from the brake 11, the suspension device 10 and the lateral stop 2 are opposite to each other, and the upper surface of the suspension device 10 is lower than the lower end surface of the second cover 24. By this arrangement, interference between the second cover 24 and the suspension device 10 can be avoided, and the second cover 24 can be conveniently mounted and dismounted.

In some embodiments of the invention, referring to fig. 10, the bogie 100 further comprises a running wheel 6, the running wheel 6 being connected to a brake 11, the running wheel 6 being at least partially above the upper surface of the suspension 10 and the central axis of the running wheel 6 being below the upper surface of the suspension 10. Therefore, the part of the travelling wheel 6 protruding out of the floor is smaller, so that a certain low floor is realized, the proportion of the protruding part of the travelling wheel 6 occupying the space in the vehicle is reduced, the floor height and the gravity center of the railway vehicle 200 are reduced, the passenger capacity and the permeability in the vehicle are ensured, and the riding comfort of passengers is improved.

In some examples of the invention, in connection with fig. 10, the running wheel 6 is provided in the frame 1, and the brake disc 111 may be connected to the axle of the running wheel 6. The brake caliper 112 may be used to grip the brake disc 111 such that the brake disc 111 generates a friction torque against the axle of the running wheel 6, thereby effecting braking of the railway vehicle 200. The upper surface of the suspension device 10 is connected to the bottom of the body of the rail vehicle 200, the central axis of the running wheel 6 being below the level of the floor. The size of the portion of the running wheel 6 located above the floor is smaller than the size of the portion thereof located below the floor. By the arrangement, the proportion of the protruding part of the running wheel 6 occupying the space in the vehicle can be further reduced, and the riding comfort of passengers is ensured.

In some embodiments of the present invention, as shown in fig. 1, 3 and 9, the frame 1 includes an electric assembly mounting portion 12, one side of the electric assembly mounting portion 12 is connected with the sound insulation cover 3 in a sealing manner, the other side of the electric assembly mounting portion 12 is connected with an electric assembly 7, the electric assembly 7 is used for outputting braking torque, the electric assembly mounting portion 12 has a through mounting opening, and the electric assembly 7 is at least partially accommodated in the mounting opening. Wherein, the sound insulation cover 3 is connected to one side of the electric assembly mounting part 12 far from the center of the frame 1, and the electric assembly 7 is connected to one side of the electric assembly mounting part 12 near the center of the frame 1. By means of the arrangement, the sound insulation cover 3 and the electric assembly 7 can be connected to two sides of the electric assembly mounting portion 12 in a sealing mode, mounting openings are sealed, noise generated by high-speed rotation of the brake 11, such as air broadband noise, can be effectively isolated in the accommodating space 33, accordingly noise in a vehicle and noise outside the vehicle can be effectively reduced, and riding comfort of passengers in the vehicle is guaranteed.

During the running of the rail vehicle 200, the electric assembly 7 may output a braking torque, i.e. control the motor to output a torque opposite to the wheel rotation direction to achieve deceleration or braking of the rail vehicle 200. The mechanical braking of the brake 11 is only performed in a small number of cases such as emergency braking, and thus the operation time of the brake 11 is short, and overheat is not likely to occur. Of course, the electric assembly 7 may also be used to output drive torque to control the normal operation of the rail vehicle 200.

In some examples of the invention, referring to fig. 1, the frame 1 may further include a frame body 13, a suspension mounting portion 14, a guide wheel mounting portion 15, a stabilizer wheel mounting portion 16, and the like. Wherein the suspension mounting portion 14, the guide wheel mounting portion 15, and the stabilizer wheel mounting portion 16 may be provided on the frame body 13. Thus, the suspension device 10 can be mounted between the vehicle body and the frame body 13 through the suspension mounting portion 14, so that vertical, lateral and longitudinal forces between the vehicle body and the frame body 13 can be transmitted, the second-stage vibration reduction is provided for the railway vehicle 200, and the vehicle body stability is improved; the guide wheel 8 may be horizontally mounted to the guide wheel mounting portion 15 to achieve a guiding function of the bogie 100; the stabilizing wheel 9 may be horizontally mounted to the stabilizing wheel mounting portion 16, thereby ensuring smooth running of the railway vehicle 200.

Of course, depending on the structural design requirement of the frame 1, only the stabilizing wheel mounting portion 16 or only the guide wheel mounting portion 15 may be provided, and at this time, the stabilizing wheel 9 or the guide wheel 8 alone may serve to guide and maintain the balance of the vehicle body to prevent the vehicle body from tilting.

In some examples of the invention, referring to fig. 1 and 9, the electric assembly 7 is sealingly connected to the electric assembly mounting portion 12. I.e. the connection of the electric motor assembly 7 and the electric motor assembly mounting portion 12 forms a closed figure. By this arrangement, the electric assembly 7 can close the other side of the electric assembly mounting portion 12, and prevent air noise generated by the brake 11 from being transmitted into or out of the vehicle through the mounting opening, thereby ensuring that the noise can be isolated in the accommodating space 33.

Wherein the electric assembly 7 may comprise a motor, a decelerator, etc., and the electric assembly 7 may be arranged coaxially with the rim 61 of the running wheel 6. In this way, the transmission efficiency between the electric assembly 7, such as the motor, the reducer and the running wheel 6, can be improved, so that a better braking effect and driving effect are achieved.

In some examples of the present invention, referring to fig. 1 and 5, the electric assembly mounting portion 12 has a substantially arched structure, so that the electric assembly mounting portion 12 can enhance the structural strength of the electric assembly mounting portion 12 while achieving the mounting of the electric assembly 7 and securing the sealing of the mounting opening, so that the electric assembly mounting portion 12 can exert a better reinforcing effect on the structure of the frame 1.

In some embodiments of the present invention, referring to fig. 1, 2 and 5, an access opening is formed in the first cover 31, the access opening being opposite to the stopper 11, and a detachable access cover 4 is sealed at the access opening. Therefore, through the arrangement, the brake 11 is convenient to overhaul while the tightness of the sound insulation cover 3 is ensured to reduce noise in a vehicle and noise outside the vehicle, the structure is simple, the operation is convenient, and the overhaul efficiency can be improved.

In some examples of the invention, referring to fig. 1, 2 and 5, an access opening may be formed in a side of the first housing 31 remote from the frame 1, and the access opening may be substantially rectangular. When the brake 11 needs to be overhauled or maintained, the access cover 4 can be detached from the access hole, and an operator can overhaul the brake 11 through the access hole due to the fact that the access hole is opposite to the brake 11, so that convenience of overhauling and maintenance is improved. After the maintenance is completed, the maintenance cover 4 can be sealed at the maintenance hole to ensure the tightness of the sound insulation cover 3.

In some embodiments of the present invention, as shown in fig. 5, an access cover mounting seat 5 protruding from the outer surface of the sound insulation cover 3 is provided at the access opening, and an opening communicating with the access opening is formed in the access cover mounting seat 5. The access cover 4 covers the opening. Thus, by providing the access cover mounting seat 5 and providing the flange 41 extending toward the center of the accommodating space 33 at the upper end of the access cover 4, the threaded fastener can be mounted in the vertical direction, and the access cover 4 can be mounted and dismounted very conveniently while the firm connection between the access cover 4 and the access cover mounting seat 5 is realized, so that the loading and unloading efficiency can be improved.

In some examples of the invention, in connection with fig. 5, the upper end of the access cover 4 is provided with a flange 41 extending towards the centre of the receiving space 33, the flange 41 being detachably connected to the top of the access cover mount 5 by means of a plurality of threaded fasteners. The flange 41 may be formed with two mounting holes penetrating the flange 41 in the thickness direction of the flange 41, and the top of the access cover mount 5 is formed with two mounting holes. During installation, the flange 41 can be lapped on the top of the access cover installation seat 5, the installation holes on the flange 41 are in one-to-one correspondence with the installation holes on the access cover installation seat 5, and then two threaded fasteners such as bolts penetrate through the installation holes on the flange 41 from top to bottom to be in threaded connection with the installation holes on the access cover installation seat 5. When it is desired to service the brake 11, the threaded fastener is disengaged from the mounting hole to remove the access cover 4, and an operator can service the brake 11 from the opening in the access cover mount 5. So set up, greatly improved the convenience of operation, can further improve and install and remove efficiency.

In some embodiments of the present invention, as shown in fig. 5, an extension portion 313 extending horizontally away from the accommodating space 33 is provided on the first cover 31, the access cover mounting seat 5 is provided on the extension portion 313, a limiting portion 3131 extending upward is provided on a side of the extension portion 313 away from the accommodating space 33, and a lower end of the access cover 4 is stopped between the limiting portion 3131 and the access cover mounting seat 5. From this, through setting up foretell spacing portion 3131, can play fine limiting displacement to can guarantee the leakproofness between access cover 4 and the access cover mount pad 5, prevent that the air noise that stopper 11 produced from passing out between access cover 4 and the access cover mount pad 5, and can improve the structural stability of whole bogie 100.

In some examples of the invention, as shown in fig. 3 and 5, the spacing portion 3131 may include a first sub-portion and a second sub-portion connected to each other, the first sub-portion and the second sub-portion may be perpendicular to each other, the first sub-portion is connected to the extension portion 313, and the second sub-portion extends upward to define the access cover 4 between the second sub-portion and the access cover mount 5. Thus, the limiting part 3131 has a limiting effect, and meanwhile, is simple in structure and convenient to process.

In some embodiments of the invention, in connection with fig. 6, the upper end of the first lower housing 311 may be provided with a

second flange portion

3112, 3112 extending horizontally away from the accommodation space 33, and the extension 313 may also be sealingly connected by means of a threaded fastener, such as a bolt. In this way, the first lower cover 311 and the first upper cover 312 can be firmly connected, and the assembly and the disassembly are convenient.

In some embodiments of the present invention, as shown in fig. 4, the sound insulation cover 3 includes a support layer 34, a damping layer 35, a sound absorbing layer 36, and a sound insulation layer 37, which are sequentially disposed in a direction away from the center of the accommodation space 33. Therefore, by arranging the supporting layer 34, the damping layer 35, the sound absorbing layer 36 and the sound insulating layer 37, the supporting layer 34 has larger rigidity and can play a good supporting role; the damping layer 35 can effectively prevent the supporting layer 34 from vibrating, so that noise generated by the vibration of the sound insulation cover 3 in the running process of the railway vehicle 200 can be effectively avoided; the sound absorbing layer 36 and the sound insulating layer 37 provide the sound insulating cover 3 with good sound absorbing and insulating effects, and prevent air noise generated by the brake 11 from being transmitted from the accommodation space 33 to the inside or the outside of the vehicle.

In some embodiments of the present invention, the support layer 34 may be a glass fiber reinforced plastic member or the like. So set up, make supporting layer 34 have certain rigidity, can play the supporting role, still have certain elasticity, easy to assemble. In addition, the support layer 34 thus provided has the characteristics of light weight, low cost, good fireproof performance, and the like. Of course, the present invention is not limited thereto, and the support layer 34 may be an aluminum alloy member, a stainless steel member, or the like.

In some embodiments of the present invention, the sound absorbing layer 36 may be a foam rubber layer. But is not limited thereto. Thus, the sound absorbing layer 36 can produce a good sound absorbing effect on air noise such as medium-low frequency noise, thereby further reducing in-vehicle noise and out-of-vehicle noise.

In some embodiments of the present invention, the sound insulation layer 37 may be a heavy sound insulation layer 37 (refer to a sound insulation layer 37 made of a sound insulation material having a relatively heavy mass and a relatively high density), such as an EVA (ethylene-vinyl acetate copolymer, refer to "ethylene-vinyl acetate copolymer" and a rubber-plastic foam material made thereof), a nitrile rubber layer, or the like. But is not limited thereto. By this arrangement, the sound insulation layer 3728 has a good sound insulation effect, so that the sound insulation cover 3 can effectively insulate the air noise generated by the brake 11.

In some embodiments of the invention, the second cover 32 is removably connected to the transverse stop 2. For example, the upper end of the second housing 32 and the lateral stop 2 may be sealingly connected by a threaded fastener, such as a bolt. In this way, the second cover 32 is convenient to assemble and disassemble while ensuring the sealing reliability between the second cover and the transverse stop 2.

The rail vehicle 200 according to the embodiment of the second aspect of the present invention includes the bogie 100 according to the embodiment of the first aspect of the present invention described above.

According to the rail vehicle 200, such as a straddle-type monorail vehicle, the bogie 100 can be used for well isolating air noise generated by the brake 11, so that the noise in the vehicle and the noise outside the vehicle are effectively reduced.

Other constructions and operations of rail vehicle 200 according to embodiments of the present invention are known to those of ordinary skill in the art and will not be described in detail herein.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and to simplify the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

In the description of the invention, "first feature", "second feature", "third feature" may include one or more of such features.

In the description of the invention, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A bogie, comprising:

a frame;

a brake provided on the frame;

the sound insulation cover is in sealing connection with the framework, the sound insulation cover and the framework jointly define an accommodating space, and the brake is arranged in the accommodating space;

the transverse stop is arranged on the sound insulation cover and is positioned on one side of the sound insulation cover, which is far away from the center of the framework;

the sound insulation cover includes: the first cover body is arranged above the transverse stop and is in sealing connection with the framework; the second cover body is arranged below the transverse stop and is in sealing connection with the framework; the stop mounting frame is arranged between the first cover body and the second cover body, and the transverse stop is mounted on the stop mounting frame;

the brake comprises a brake disc and a brake clamp, wherein the brake clamp is used for clamping or loosening the brake disc, the brake clamp is opposite to the first cover body, and the width of the first cover body is larger than that of the second cover body;

the first cover includes:

the first lower cover body is connected above the stop mounting frame in a sealing way;

the first upper cover body is detachably connected above the first lower cover body, the brake clamp is opposite to the first upper cover body, and the width of the first upper cover body is larger than that of the first lower cover body;

the sound insulation cover is characterized by further comprising a hanging device, wherein the hanging device is arranged on the framework, the hanging device is positioned on one side, far away from the brake, of the sound insulation cover, the hanging device and the transverse stop are opposite to each other, and the upper surface of the hanging device is lower than the lower end face of the first upper cover body.

2. The truck of claim 1 wherein said first lower housing is removably connected to said stop mount.

3. The bogie of claim 1, further comprising a running wheel connected to the brake, the running wheel being at least partially above the upper surface of the suspension, and a central axis of the running wheel being below the upper surface of the suspension.

4. A bogie as claimed in any one of claims 1 or 2 in which the frame comprises an electrical assembly mounting portion having one side thereof sealingly connected to the sound-insulating cover and the other side thereof connected to an electrical assembly for outputting braking torque, the electrical assembly mounting portion having a mounting opening therethrough, the electrical assembly being at least partially received within the mounting opening.

5. The bogie as claimed in any one of claims 1 or 2 wherein an access opening is formed in the first housing, the access opening being opposite the brake and a removable access cover sealed thereto.

6. The bogie of claim 5, wherein the access opening is provided with an access cover mounting seat protruding from an outer surface of the sound insulation cover, an opening communicating with the access opening is formed in the access cover mounting seat, and the access cover covers the opening.

7. The bogie of claim 6, wherein the first cover body is provided with an extension portion extending horizontally away from the accommodating space, the access cover mounting seat is arranged on the extension portion, one side of the extension portion away from the accommodating space is provided with a limiting portion extending upwards, and the lower end of the access cover is stopped between the limiting portion and the access cover mounting seat.

8. The bogie according to any one of claims 1 or 2, wherein the sound-proof cover includes a support layer, a damping layer, a sound-absorbing layer, and a sound-proof layer, which are sequentially disposed in a direction away from a center of the accommodation space.

9. Railway vehicle characterized by comprising a bogie according to any of claims 1-8.