CN114084187A

CN114084187A - Double-layer side beam bogie and railway vehicle

Info

Publication number: CN114084187A
Application number: CN202111401937.6A
Authority: CN
Inventors: 张文朝; 吕少鹏; 刘国田; 李江波; 李跃; 李永印
Original assignee: CRRC Tangshan Co Ltd
Current assignee: CRRC Tangshan Co Ltd
Priority date: 2021-11-24
Filing date: 2021-11-24
Publication date: 2022-02-25
Anticipated expiration: 2041-11-24
Also published as: CN114084187B; WO2023093797A1

Abstract

The embodiment of the application provides a double-deck curb girder bogie and rail vehicle, wherein, the bogie includes: the side beams comprise an upper side beam plate and a lower side beam plate which are stacked, the upper side beam plate is contacted with the middle part of the lower side beam plate, and a gap is formed between the end parts of the upper side beam plate and the lower side beam plate; two connecting seats; a connecting seat is arranged below the middle part of one side beam; the two connecting seats are connected through a traction device; two wheel pairs respectively arranged below the end parts of the side beams; the wheel pair comprises an axle, wheels and axle boxes which are symmetrically arranged on the axle; a suspension is disposed between each axle housing and the end of the side rail. The technical scheme that this application embodiment provided can alleviate the weight of bogie, does benefit to the lightweight design.

Description

Double-layer side beam bogie and railway vehicle

Technical Field

The application relates to a vehicle running technology, in particular to a double-layer side beam bogie and a rail vehicle.

Background

Bogies are important parts of rail vehicles for carrying the vehicle body and performing the walking and steering functions. The bogie comprises a framework, wheel pairs, a traction device, a buffer device and the like, wherein the commonly used framework generally comprises two side beams extending along the length direction of the bogie and a cross beam connecting the two side beams, and the connection modes between the cross beam and the side beams are various. After studying various forms of bogies, the skilled person has found that the conventional bogie has some technical drawbacks, such as: the self weight is large, so that the acting force of the wheel pair is large, the abrasion of the wheel rail is large, and large noise is generated; the frame is rigidly connected, so that the damping capacity is poor, the carriage vibration is large, and the riding comfort is poor; the wheel load reduction rate is high, and the safety is reduced; the problem that the carriage is prone to side turning due to poor anti-side rolling capacity is solved, the carriage is greatly vibrated due to insufficient vertical buffering capacity, the riding comfort is poor, the traction efficiency is low due to large dead weight, and the assembly efficiency is low due to unreasonable component mounting layout.

Disclosure of Invention

In order to solve one of the technical defects, the embodiment of the application provides a double-layer side beam bogie and a railway vehicle.

According to a first aspect of embodiments of the present application, there is provided a double-deck side sill bogie including:

the side beams comprise an upper side beam plate and a lower side beam plate which are stacked, the upper side beam plate is contacted with the middle part of the lower side beam plate, and a gap is formed between the end parts of the upper side beam plate and the lower side beam plate;

two connecting seats; a connecting seat is arranged below the middle part of one side beam; the two connecting seats are connected through a traction device;

two wheel pairs respectively arranged below the end parts of the side beams; the wheel pair comprises an axle, wheels symmetrically arranged on the axle and axle boxes;

a suspension is disposed between each axle housing and the end of the side rail.

According to a second aspect of an embodiment of the present application, there is provided a rail vehicle including: the double-deck side sill truck as described above.

The bogie that this application embodiment provided has abandoned traditional crossbeam structure, adopts the connecting seat to be used for connecting and fixing double-deck curb girder to adopt draw gear to link together two connecting seats, can alleviate the weight of bogie self by a wide margin, be favorable to improving rail vehicle's traction efficiency. And the connecting seat provides a plurality of interfaces for parts such as connecting curb girder, draw gear and secondary suspension device, on satisfying the basic function's of bogie basis, has simplified the structure of bogie, does benefit to lightweight design.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

FIG. 1 is a schematic structural diagram of a non-power bogie provided in an embodiment of the present application;

FIG. 2 is a top view of a non-powered truck provided in an embodiment of the present application;

FIG. 3 is a schematic structural diagram of a power bogie provided in an embodiment of the present application;

FIG. 4 is a top view of a power truck provided in an embodiment of the present application;

fig. 5 is a schematic structural diagram of a connecting seat in a bogie provided by an embodiment of the present application;

FIG. 6 is a schematic structural diagram of a side sill in a bogie according to an embodiment of the present application;

FIG. 7 is an exploded view of the assembly of the side beam and the connecting seat of the bogie according to the embodiment of the present application;

FIG. 8 is a schematic view of a side sill of a bogie according to an embodiment of the present application under a first vertical load;

FIG. 9 is a schematic view of a side sill of a bogie according to an embodiment of the present application under a second vertical load;

FIG. 10 is a schematic structural diagram of a wheel set in a bogie provided by an embodiment of the present application;

FIG. 11 is a schematic structural diagram of a suspension system in a bogie according to an embodiment of the present application;

FIG. 12 is a schematic view of a safety stop assembly in a truck according to an embodiment of the present disclosure;

FIG. 13 is a cross-sectional view of a safety stop assembly in a truck according to an embodiment of the present application;

FIG. 14 is an exploded view of a safety stop assembly in a truck according to an embodiment of the present application;

FIG. 15 is a cross-sectional view of the secondary suspension system and the connection seat assembly of the truck according to the embodiment of the present application;

fig. 16 is a schematic structural view illustrating an assembly of a secondary suspension device and a connecting seat in a bogie according to an embodiment of the present invention;

fig. 17 is a schematic structural view illustrating an assembly of a braking device and a connecting seat in a bogie according to an embodiment of the present application;

FIG. 18 is a schematic structural view of a bogie according to an embodiment of the present invention, in which axle boxes and connecting seats are connected by a single tie rod;

FIG. 19 is an exploded view of the bogie according to the present embodiment showing the axle boxes and the connecting seats connected by a single tie rod;

FIG. 20 is a schematic structural view of a bogie according to an embodiment of the present invention, showing a traction device connected to a connecting base;

fig. 21 is an exploded view of the attachment of the draft gear to the coupler socket in the truck according to the embodiment of the present application;

FIG. 22 is a schematic illustration of a kingpin configuration in a truck according to an embodiment of the present disclosure;

FIG. 23 is a side view of a kingpin in a truck according to an embodiment of the present disclosure;

FIG. 24 is a schematic structural view of an assembly of a transverse shock absorber in a bogie according to an embodiment of the present application;

fig. 25 is a schematic structural view illustrating an assembly of a driving device and a connecting seat in a bogie according to an embodiment of the present invention;

fig. 26 is a top view of the driving device and the connecting base assembled in the bogie according to the embodiment of the present application.

Reference numerals:

1-a side beam; 11-upper side beam panel; 12-lower side beam panel;

2-a connecting seat; 21-a first side rail mounting groove; 22-a fixed seat; 221-fixing bolts; 222-a first upper liner; 223-a first lower liner; 23-a secondary mount; 231-two series of positioning holes; 24-a brake lifting seat; 241-a hanging seat mounting hole; 25-the pull rod is connected with the side wall; 251-a tie rod mounting hole; 261-a first connection; 2611-a first central bore; 2612-first bolt hole; 262-a second connection; 2621-a second central hole; 2622 — second bolt hole; 27-a lateral stop; 28-a motor mounting section;

31-axle; 32-a wheel; 33-axle boxes; 331-a series of positioning holes; 332-lifting the edge; 333-lifting the gap; 334-a tie rod connection seat; 34-single pull rod; 341-elastic nodes;

4-a traction device; 41-a traction beam; 411-beam body; 412-a first splice tray; 413-first connecting bolt; 414-connecting pin; 415-an elastic cushion cover; 416-a connection flange; 417 — a second attachment bolt; 42-a tow pin; 421-vehicle body attachment portion; 422-lifting the boom; 4221-shock absorber assembly space; 4222-shock absorber mounting hole; 43-a longitudinal stop assembly; 431-an inside fixation member; 432-a longitudinal stop; 433-an outer fixing member; 44-a lateral stop assembly;

5-a primary suspension device; 51-an elastic buffer; 52-side beam mounting portions; 521-a second side beam mounting groove; 522-safety stop mounting hole; 53-safety stop; 531-first stop frame; 532-second stop frame; 533-stop connection bolt; 54-a second lower liner; 55-lifting and hanging piece;

6-secondary suspension device; 61-secondary positioning pin;

71-direct drive motor; 72-motor balancing pole;

8-a braking device;

91-a shock absorber integration seat; 92-a transverse shock absorber; 93-anti-hunting vibration dampers; 94-vertical shock absorber; 95-anti-roll torsion bar.

Detailed Description

In order to make the technical solutions and advantages of the embodiments of the present application more apparent, the following further detailed description of the exemplary embodiments of the present application with reference to the accompanying drawings makes it clear that the described embodiments are only a part of the embodiments of the present application, and are not exhaustive of all embodiments. It should be noted that, in the present application, the embodiments and features of the embodiments may be combined with each other without conflict.

The embodiment provides a double-layer side beam bogie which can be applied to a railway vehicle. In the present embodiment, the vehicle length direction is referred to as the longitudinal direction, the vehicle width direction is referred to as the lateral direction, and the vehicle height direction is referred to as the vertical direction, or the vertical direction.

Fig. 1 is a schematic structural diagram of a non-power bogie provided in an embodiment of the present application, and fig. 2 is a top view of the non-power bogie provided in the embodiment of the present application. As shown in fig. 1 and 2, the present embodiment provides a bogie including: side beam 1, connecting seat 2, wheel pair, draw gear 4 and a series of linkage 5.

The side members 1 are two in number, extending in the longitudinal direction. The two side members 1 are arranged side by side with a space left therebetween. The side member 1 includes an upper side member plate and a lower side member plate which are stacked, the upper side member plate is in contact with the middle of the lower side member plate, and a gap is provided between the ends. The upper side beam plate and the lower side beam plate are both in the shapes of thick middle and thin two ends. The quantity of connecting seat 2 is two, and a connecting seat 2 sets up the below in 1 middle parts of a curb girder, and connecting seat 2 is used for carrying out the bearing to curb girder 1.

The traction device 4 is connected between the two connecting seats 2, and the traction device 4 is also used for being connected with the body of the railway vehicle and transmitting longitudinal traction force and braking force between the body and the bogie.

The quantity of wheel pair is two, sets up respectively in the tip below of curb girder 1, and the wheel pair includes: an axle 31, wheels 32 symmetrically disposed on the axle 31, and axle boxes 33.

Primary suspension device 5 is provided between axle box 33 and the end portions of side members 1, and supports side members 1 and damps vertical force between side members 1 and wheel pair 3.

The bogie that this embodiment provided has abandoned traditional crossbeam structure, adopts the connecting seat to be used for connecting and fixing double-deck curb girder to adopt draw gear to link together two connecting seats, can alleviate the weight of bogie self by a wide margin, be favorable to improving rail vehicle's traction efficiency. And the connecting seat provides a plurality of interfaces for parts such as connecting curb girder, draw gear and secondary suspension device, on satisfying the basic function's of bogie basis, has simplified the structure of bogie, does benefit to lightweight design.

When the driving device is not arranged on the bogie, the bogie is used as a non-power bogie. When the driving device is arranged on the bogie, the bogie is used as a power bogie. Fig. 3 is a schematic structural diagram of a power bogie provided in an embodiment of the present application, and fig. 4 is a plan view of the power bogie provided in the embodiment of the present application. As shown in fig. 3 and 4, the driving apparatus includes: a direct drive motor 71 and a motor balance bar 72. The direct drive motor 71 is arranged on the axle 31, the rotor is connected with the axle 31, and the stator of the direct drive motor 71 is fixedly connected with the shell. The connecting base 2 also provides a connecting interface with the direct drive motor 71, and the shell of the direct drive motor 71 is connected with the connecting base 2 through the motor balancing rod 72. In addition, the housing of the direct drive motor 71 is fixed to the axle box 33 through a motor end cover.

The direct drive motor 71 is adopted to directly drive the axle 31 to rotate, so that a gear reducer in the traditional bogie is omitted, the structure of the bogie is further simplified, and the weight of the bogie is reduced.

Further, the bogie also comprises a braking device 8 for braking the wheels 32. In this embodiment, the braking device 8 is fixed to the connecting base 2 by using a braking clamp. During braking, the brake caliper grips the faces of the wheel on either side of the wheel 32 to apply the brake.

Based on the above design thought, the present embodiment provides a concrete implementation manner of the bogie:

fig. 5 is a schematic structural diagram of a connecting seat in a bogie provided by an embodiment of the present application. As shown in fig. 5, the top of the coupling socket 2 is recessed downward to form a first side rail mounting groove 21, and the first side rail mounting groove 21 extends in the longitudinal direction. The middle of the side member 1 is received in the first side member mounting groove 21, and the depth of the first side member mounting groove 21 is smaller than the thickness of the middle of the side member 1. The first side member mounting groove 21 serves to restrict lateral displacement of the side member 1.

Fig. 6 is a schematic structural view of a side sill of a bogie provided in an embodiment of the present application, and fig. 7 is an exploded view of the assembly of the side sill and a connecting seat of the bogie provided in the embodiment of the present application. As shown in fig. 6 and 7, the side member 1 includes an upper side member plate 11 and a lower side member plate 12, and the upper side member plate 11 and the lower side member plate 12 are stacked up and down, both extending in the longitudinal direction, and accommodated in the first side member mounting groove 21.

One implementation is: adopt fixing base 22 to stride and locate curb girder 1 top, fixing base 22's horizontal both ends extend from the both sides downwardly extending of curb girder 1. The fixing base 22 serves to restrict vertical displacement of the side member 1.

Specifically, the fixing base 22 includes: fixed roof, fixed curb plate and fixing bolt. Wherein, fixed roof extends along the direction parallel with curb girder 1, and the vertical setting of fixed curb plate is at the horizontal both ends of fixed roof, and fixed curb plate downwardly extending. The fixed side plate and the fixed top plate can be of an integrated structure, and a groove capable of accommodating the side beam is enclosed between the fixed top plate and the fixed side plate. The fixed top plate is approximately rectangular, and four vertex angles of the fixed top plate are in arc transition. Vertical bolt holes are formed in the four top corners, and the bolt holes extend from the top surface of the fixed top plate to the bottom surface of the fixed side plate. The fixing bolt 221 sequentially penetrates through bolt holes formed in the fixing top plate and the fixing side plate and then is connected to the connecting seat 2.

In this embodiment, the upper side beam plate 11 and the lower side beam plate 12 may be made of composite fibers, for example: the carbon fiber material has certain flexible deformability. The connecting seat 2 is made of rigid materials, has certain strength and provides interfaces for other components. The holder 22 may also be made of a rigid material.

When the side beam is made of carbon fiber material, further, a first upper liner 222 is arranged between the fixed top plate and the side beam 1 for protecting the side beam 1 and preventing the side beam 1 from being worn after being in contact with the fixed seat 22 for a long time. In addition, a first lower lining member 223 is disposed between the first side rail mounting groove 21 and the middle of the side rail 1 for protecting the side rail 1 from abrasion after the side rail 1 is in contact with the connecting seat 3 for a long time.

The first lower liner 223 includes: the first lower substrate plate and the first lower substrate side plate. The first lower substrate plate is disposed in parallel with the bottom surface of the first side beam mounting groove 21. The two first lower lining side plates are respectively erected at the two transverse edges of the first lower substrate plate. The height of the first lower lining side plate is greater than the depth of the first side beam mounting groove 21, so that the top end of the first lower lining side plate extends upwards to cover the side surface of the lower side beam plate 12 to protect the lower side beam plate.

The first upper liner 222 includes: a first upper substrate plate and a first upper substrate side plate. The first upper substrate plates are arranged in parallel with the lower surface of the fixed top plate, and the two first upper lining side plates are respectively erected on the two transverse edges of the first upper substrate plates. The first upper lining member is located in the groove of the fixed seat 22, and the height of the first upper lining side plate is greater than that of the fixed side plate or is the same as that of the fixed side plate, so that the first upper lining side plate extends downwards to cover the side surface of the upper side beam plate 11 to protect the same.

When the upper side beam plate 11 and the lower side beam plate 12 are made of carbon fiber materials, the upper side beam plate 11 and the lower side beam plate 12 are deformed under loads of different vehicle bodies, and vertical loads can be adjusted and buffered. Specifically, fig. 8 is a schematic diagram of the side sill in the bogie provided by the embodiment of the present application receiving a first vertical load, and fig. 9 is a schematic diagram of the side sill in the bogie provided by the embodiment of the present application receiving a second vertical load. The first vertical load is assumed to be less than the second vertical load.

As shown in fig. 8, when the side member 1 is subjected to a first smaller vertical load, for example: when the vehicle is in an unloaded state, the top surfaces of the upper side beam plate 11 and the lower side beam plate 12 are both small deformation surfaces, and the side beam gap 13 between the two ends is large. The support stiffness is now provided solely by the upper side rail panel 11.

As shown in fig. 9, when the side member 1 is subjected to a second, larger vertical load, for example: when the vehicle is in a fully loaded state, the upper side beam plate 11 and the lower side beam plate 12 simultaneously provide support rigidity, the lower side beam plate 12 is greatly deformed, and the ends of the upper side beam plate 11 and the lower side beam plate 12 are contacted. The upper and lower side rails 11, 12 simultaneously provide a greater support stiffness than the upper side rail 11 alone.

The double-layer side beam structure realizes multi-level buffering, can be used as a three-system suspension device to buffer vertical loads, further reduces the vibration of a vehicle body, and improves the riding comfort.

On the basis of the above technical scheme, this embodiment explains the implementation of the wheel set and the assembly mode between the wheel set and the side beam and the connecting seat in detail:

fig. 10 is a schematic structural diagram of a wheel pair in a bogie provided by an embodiment of the application. As shown in fig. 10, the wheelset includes an axle 31, wheels 32, and axle boxes 33, the wheels 32 are symmetrically disposed on the axle 31, and the axle boxes 33 are symmetrically disposed on the axle 31 and located inside the wheels 32. The axle housing 33 has a flat top surface, and a series of positioning holes 331 are formed in the middle thereof for assembling with a series of suspension units 5.

Fig. 11 is a schematic structural diagram of a suspension system in a bogie according to an embodiment of the present invention. As shown in fig. 11, a primary suspension device 5 includes: an elastic buffer portion 51 and a side rail mounting portion 52. The elastic buffer 51 includes a rigid metal layer and a buffer rubber layer stacked and alternately arranged, and the thickness of the single buffer rubber layer is greater than that of the single rigid metal layer. The lowest layer is a rigid metal layer, and the bottom surface of the rigid metal layer is provided with a positioning pin, which can be inserted into a series of positioning holes 331 on the top surface of the axle box 33 for positioning, so as to limit the horizontal displacement of a series of suspension devices.

The rigid metal layer and the buffer rubber layer are both of structures with high middle parts and low ends, the transverse rigidity is high, the transverse force between the wheel pair and the side beam 1 can be completely borne by the primary suspension device 5, and the side beam 1 is prevented from bearing the transverse force, so that the characteristics that the bonding force between the carbon fiber side beam plate layers is poor and the transverse force is not beneficial to bearing are met.

The side rail mounting portions 52 are made of a rigid metal, the side rail mounting portions 52 are provided at the tops of the elastic buffer portions 51, and the tops of the side rail mounting portions 52 are assembled with the side rail 1. The side rail mounting portions 52 are integrally formed with the metal layers and the cushion rubber layer by a vulcanization process.

One implementation is as follows: the top of the side rail mounting portion 52 is provided with a second side rail mounting groove 521 extending in the longitudinal direction, and the end of the side rail 1 is received in the second side rail mounting groove 521. The depth of the second side rail mounting groove 521 is smaller than the thickness of the end of the side rail 1. The second side member mounting groove 521 is used to restrict lateral displacement of the side member 1.

Further, as shown in fig. 1 to 4, safety stoppers 53 are provided to straddle over the end portions of the side members 1, and both lateral ends of the safety stoppers 53 extend downward from both sides of the side members 1 to be connected to a suspension 5. The safety stop 53 is made of rigid material, so that on one hand, the transverse displacement of the side beam 1 can be limited, and on the other hand, the side beam 1 can bear the weight of a vehicle body when failing, so that the integral failure of the bogie is avoided, and the safety is improved.

Specifically, when the side member 1 is made of a carbon fiber material, a certain gap is provided between the safety stopper 53 and the vehicle body during normal running of the vehicle. When the side beam 1 is broken and deformed to fail under a certain limit condition, the vehicle body descends to be in contact with the safety stop 53, the safety stop 53 above the four axle boxes supports the vehicle body, the bogie can be guaranteed to run to a station or a vehicle maintenance area at a low speed, and the safety of personnel in the vehicle is guaranteed.

For the double-deck side member shown in fig. 1 to 4, the present embodiment provides a specific implementation of the safety stopper 53: fig. 12 is a schematic structural view of a safety stop assembly in a bogie provided in an embodiment of the present application, fig. 13 is a sectional view of the safety stop assembly in the bogie provided in the embodiment of the present application, and fig. 14 is an exploded view of the safety stop assembly in the bogie provided in the embodiment of the present application. As shown in fig. 12 to 14, the ends of the upper and

lower side members

11 and 12 extend above a suspension system 5.

The safety stopper 53 includes: a first stopper frame 531 and a second stopper frame 532. The first stopper frame 531 is located between the upper side member plate 11 and the lower side member plate 12, and extends over the lower side member plate 12. The first stopper frame 531 has both lateral ends extending downward from both sides of the lower side sill 12 to a primary suspension device 5. The second stopper frame 532 spans above the upper side sill 11, and both lateral ends of the second stopper frame 532 extend downward from both sides of the upper side sill 11 to the first stopper frame 531.

The first stopper frame 531 and the second stopper frame 532 are fixedly connected to a primary suspension device 5. A specific implementation way is as follows: a vertical safety stopper mounting hole 522 is provided at the top of the side member mounting portion 52, and the safety stopper mounting hole 522 is a screw hole. Bolt holes are correspondingly formed in the first stop frame 531 and the second stop frame 532, and stop connecting bolts 533 are adopted to penetrate through the bolt holes in the second stop frame 532 and the first stop frame 531 in sequence downwards and then penetrate through the safety stop mounting holes 522 for fixing.

One specific implementation of the second stopper frame 532 is as follows: comprises a stop top plate and a stop leg. The backstop roof is equipped with the bolt hole. The stop support leg is vertically arranged on the lower surface of the stop top plate; the number of backstop landing legs is a plurality of, and the symmetry sets up the both sides at the side sill board. The top end of the backstop landing leg is connected with the backstop top plate, the bottom end of the backstop landing leg is in contact with the first backstop frame 531, and bolt holes which are communicated up and down are formed in the backstop landing leg. The stopper connecting bolt passes through the bolt hole of the stopper top plate and the bolt hole of the stopper leg in sequence to be connected to a series of suspension devices 5. In this embodiment, the number of the stopper legs is four, and the stopper legs are disposed at four top corners of the stopper top plate.

First backstop frame 531 and the laminating of downside roof beam board 12, the quantity of first backstop frame 531 is at least two, arranges at interval in proper order along longitudinal direction. A certain distance is left between the stopper top plate in the second stopper frame 532 and the upper side rail plate 11.

Further, when the side member 1 is made of a composite fiber material such as carbon fiber, the second lower lining member 54 is disposed between the second side member mounting groove 521 and the end portion of the side member 1 to protect the side member 1 from abrasion. The second lower liner member includes: a second lower substrate plate and two second lower substrate side plates. The second lower substrate plate is disposed in parallel with the bottom surface of the second side beam mounting groove 521. Two second lower lining side plates are erected at the two transverse edges of the second lower lining side plate, and the height of the second lower lining side plate is greater than the depth of the second side beam mounting groove 521 or is the same as the depth of the second side beam mounting groove 521, so that the second lower lining side plates are coated on the two sides of the side beam 1.

Further, a lifting member 55 is mounted to the primary suspension unit 5 and the axle box 33 for integrally lifting the bogie. Specifically, as shown in fig. 1, the top of the lifting member 55 is fixed to the side rail mounting portion 52. For example, a screw hole may be provided in a longitudinal end surface of the side rail mounting portion 52, and the hanger 55 may be fixed to the longitudinal end surface of the side rail mounting portion 52 by a bolt.

As shown in fig. 10, 12 and 14, the top of the axle box 33 extends in the longitudinal direction to form a lifting edge 332, and the lifting edge 332 is provided with a lifting notch 333. The lower portion of the lifting member 55 is received in the lifting notch 333, and the bottom end of the lifting member 55 has a lifting stopper arm having a size larger than the lifting notch 333, the lifting stopper arm extending in the lateral direction.

Furthermore, the bogie also comprises a secondary suspension device 6 which is arranged on the connecting seat 2 and is positioned on the outer side of the side beam 1. The secondary suspension device 6 is used for supporting the vehicle body and cushioning a vertical force between the vehicle body and the bogie. In conventional bogies, the secondary suspension 6 is usually provided on top of the side sill or on top of the bolster. Unlike conventional bogies: in the bogie provided by the application, the secondary suspension device 6 is arranged on the connecting seat 2 and has no direct connection relation with the side beam 1.

For the secondary suspension device 6, the present embodiment provides an implementation manner:

fig. 15 is a sectional view illustrating the assembly of the secondary suspension device and the connecting seat in the bogie according to the embodiment of the present application, and fig. 16 is a structural view illustrating the assembly of the secondary suspension device and the connecting seat in the bogie according to the embodiment of the present application. As shown in fig. 5, 15, and 16, the secondary suspension device 6 may be a rubber pile or an air spring. A secondary positioning pin 61 is provided at the bottom of the secondary suspension device 6.

A secondary mounting seat 23 is correspondingly arranged on the top of the connecting seat 2 and used for assembling a secondary suspension device 6. Specifically, a first side beam mounting groove 21 is formed in the middle of the top of the connecting base 2, the secondary mounting base 23 is located on the lateral outer side of the first side beam mounting groove 21, a secondary positioning hole 231 is formed in the secondary mounting base 23, and the secondary positioning pin 61 is inserted into the secondary positioning hole 231 and used for limiting the horizontal displacement of the secondary suspension device 6.

As for the assembling manner of the braking device 8, the embodiment also provides an implementation manner:

fig. 17 is a schematic structural view illustrating an assembly of a braking device and a connecting seat in a bogie according to an embodiment of the present invention. As shown in fig. 5 and 17, the two series of mounting seats 23 are respectively provided with brake hanging seats 24 at both longitudinal ends thereof, and the brake hanging seats 24 are provided with vertically extending hanging seat mounting holes 241. In this embodiment, a brake caliper is used as the braking device, and the brake caliper is fixed by a bolt passing through the hanger mounting hole 241. Two brake hanging seats 24 are arranged on one connecting seat 2, and four brake clamps are arranged on the bogie to brake four wheels.

Fig. 18 is a schematic structural view illustrating a bogie according to an embodiment of the present invention in which an axle box and a connecting seat are connected by a single tie rod, and fig. 19 is an exploded view illustrating a bogie according to an embodiment of the present invention in which an axle box and a connecting seat are connected by a single tie rod. As shown in fig. 18 and 19, a single tension rod 34 is used to connect between the connecting bracket 2 and the axle housing 33 for transmitting longitudinal force.

Specifically, as shown in fig. 10, 12, 14, and 19, a tie bar connecting seat 334 is provided on a longitudinal end surface of the axle box 33, and the tie bar connecting seat 334 is provided with a bolt hole. The number of the pull rod connecting seats 334 is two, and a gap for accommodating the end part of the single pull rod 34 is reserved between the two.

The connecting base 2 has two tie bar mounting sidewalls 25 extending in the transverse direction, and a tie bar mounting hole 251 is formed therein to receive an end of the single tie bar 34. Bolt holes are formed in the pull rod mounting side walls 25 on the two sides of the pull rod mounting hole 251.

The single tension rod 34 extends in a longitudinal direction and is provided at both ends thereof with mounting holes for receiving the elastic nodes 341. The mounting hole size of its one end is great, and the mounting hole size of the other end is less. The elastic node 341 is press-fitted in the mounting hole. The elastic node 341 is formed by vulcanizing an outer layer metal and an inner layer rubber, and has certain strength and certain buffering capacity. The two ends of the elastic joint 341 are provided with connecting protrusions, which are provided with bolt holes, and the connecting protrusions of the elastic joint are respectively connected with the tie rod connecting seat 334 on the axle box 33 and the tie rod mounting side wall 25 on the connecting seat 2 through bolts.

For the traction device 4, the present embodiment provides an implementation:

fig. 20 is a schematic structural view illustrating a traction device and a connection seat in a bogie according to an embodiment of the present invention, and fig. 21 is an exploded view illustrating a traction device and a connection seat in a bogie according to an embodiment of the present invention.

As shown in fig. 20 and 21, the traction device 4 includes: draft sill 41, draft pin 42, longitudinal stop assembly 43 and lateral stop assembly 44. The number of the draft sill 41 is two, and the draft sills are arranged side by side with an accommodating space left therebetween. The draft sill 41 extends in a lateral direction and is connected between the two coupling sockets 2.

The bottom end of the towing pin 42 is inserted into the accommodating space between the two towing beams 41, and the top end of the towing pin 42 is used for being connected with the vehicle body. The traction pin 42 is used to transmit traction and braking forces between the vehicle body and the bogie.

The number of the longitudinal stopping assemblies 43 is two, and the two longitudinal stopping assemblies are respectively arranged between the traction pin 42 and the traction beam 41 and used for buffering longitudinal force between the traction pin 42 and the traction beam 41 and avoiding rigid impact between the two.

The number of the lateral stopper assemblies 44 is two, and they are respectively provided between the kingpin 42 and the coupling bracket 2, for limiting an excessive lateral displacement between the vehicle body and the bogie. The transverse stopping assembly 44 can be specifically mounted on the connecting seat 2, and when the vehicle runs in a straight line, a certain gap is formed between the transverse stopping assembly 44 and the traction pin 42; when the vehicle body is subjected to excessive lateral forces, the kingpin 42 contacts one side of the lateral stop assembly 44.

The embodiment provides a specific implementation manner: one side of the connecting base 2 facing the draft sill 41 is provided with a first draft sill interface and a second draft sill interface. One end of the draft sill 41 is connected to one of the connector blocks 2 through a first draft sill interface and to the other connector block 2 through a second connector interface.

As shown in fig. 5, the first draft sill interface is a first connection portion 261 disposed on the connecting link 2, the first connection portion 261 having a first central bore 2611 and a plurality of first bolt holes 2612 disposed around the first central bore 2611.

As shown in fig. 21, the draft sill 41 includes: a beam 411, a first connection plate 412 and a first connection bolt 413. Wherein, one end of the beam 411 is provided with a first receiving cavity. A first inner side boss capable of being pressed in the first accommodating cavity is arranged on one side of the first connecting disc 412, and a first outer side boss capable of being accommodated in the first central hole 2611 is arranged on the other side of the first connecting disc. The first connecting plate 412 is further provided with a plurality of bolt holes arranged around the first inner boss. The first connection bolt 413 is fixed to the first connection portion 216 through the bolt hole of the first connection plate 412 and the first bolt hole 2612 in sequence.

As shown in fig. 5, the second trailing beam interface is a second connecting portion 262 provided on the connecting socket 2. The second connecting portion 262 is provided with a second center hole 2621 and a plurality of second bolt holes 2622 disposed around the second center hole 2621.

As shown in fig. 21, the other end of the beam 411 is provided with a second receiving cavity. The draft sill 41 further includes: a connecting pin 414, an elastic buffer sleeve 415, a connecting flange 416 and a second connecting bolt 417. A second inner side boss capable of being pressed into the second accommodating cavity is arranged at one end of the connecting pin 414 facing the draft sill 41, the connecting pin 414 is further provided with a plurality of bolt holes arranged around the second inner side boss, and one end of the connecting pin 414 facing the connecting seat 2 is inserted into the second center hole 2621.

The elastic buffering sleeve 415 is sleeved between the connecting pin 414 and the second central hole 2621. The elastic buffer sleeve 415 can be a structure formed by vulcanizing an outer layer of metal and an inner layer of rubber, and has a certain buffer capacity.

The connecting flange 416 is located on a side of the second connecting portion 262 facing away from the connecting pin 414, and the second connecting bolt 417 passes through the bolt hole on the connecting flange 416, the second bolt hole 2622 on the second connecting portion 262 and the bolt hole on the connecting pin 414 in sequence for connection. Further, the connecting flange 416 is a square flange.

In the above embodiment, the beam body 411 of the draft sill 41 may be a cylindrical structure, and the interior thereof is hollow.

The longitudinal stop assembly 43 comprises: a medial fixing member 431, a longitudinal stopper 432, and a lateral fixing member 433. The inner fixing member 431 has a circular arc surface that conforms to the shape of the draft sill 41, and is disposed around the inside of the draft sill. The outer holder 433 has a circular arc surface conforming to the shape of the draft sill 41, and the outer holder 433 is provided around the outside of the draft sill 41. A longitudinal stop 432 is located between the inboard mount 431 and the kingpin 42. The outer fixing member, the inner fixing member, and the longitudinal stopper are connected together by bolts from the upper and lower sides of the draft sill 41.

As shown in fig. 5, the end face of the connecting socket 2 facing the draft sill 41 is provided with a lateral stop 27, the lateral stop 27 being located between the first draft sill interface and the second draft sill interface. The lateral stop assembly 44 includes: a lateral mount and a lateral stop. Wherein the transverse mounting is bolted to a transverse stop 27 fixed to a side of the transverse mounting facing the towing pin 42. A transverse stop spacing is provided between the transverse stop and the kingpin 42.

Fig. 22 is a schematic structural view of a kingpin in a bogie according to an embodiment of the present application, fig. 23 is a side view of the kingpin in the bogie according to the embodiment of the present application, and fig. 24 is a schematic structural view of an assembly of a transverse damper in the bogie according to the embodiment of the present application. As shown in fig. 22 to 24, a vehicle body attachment portion 421 is provided at the top end of the towing pin 42, and a bolt hole is provided in the vehicle body attachment portion 421, and is bolted to the bottom end of the vehicle body. The bottom end of the towing pin 42 is provided with a lifting arm 422, the lifting arm 422 extending in the longitudinal direction. The lifting arms 422 are two in number and extend in opposite directions. The lifting arm 422 is used for lifting the bogie.

A damper fitting space 4221 into which the lateral damper 92 is inserted is left between the two lifting walls 422. The lifting wall 422 is provided with a shock absorber mounting hole 4222. One end of the transverse damper 92 is mounted to the damper mounting hole 4222 through an elastic node, and the other end is connected to a damper interface provided at the bottom of the connecting socket 2 through an elastic node. The transverse damper 92 is used to damp the transverse force between the towing pin 42 and the coupling socket 2.

For the above driving device, the present embodiment also provides an implementation manner:

fig. 25 is a schematic structural view illustrating an assembly of a driving device and a connecting seat in a bogie according to an embodiment of the present disclosure, and fig. 26 is a top view illustrating an assembly of a driving device and a connecting seat in a bogie according to an embodiment of the present disclosure. As shown in fig. 25 and 26, one end of the motor balance bar 72 is connected to the housing of the direct drive motor 71 through an elastic joint. The other end of the motor balancing rod 72 is divided into two connecting ends, and each connecting end is connected with the connecting seat 2 through an elastic node.

Specifically, as shown in fig. 5, a motor connecting portion 28 is disposed at an inner end of the top of the connecting socket 2. The number of the motor connecting parts 28 is two, and a space for accommodating the end part of the motor balancing rod 72 is reserved between the two. The motor connecting part 28 is provided with a bolt hole and is connected with an elastic node on the motor balancing rod 72 through a bolt.

Further, the bogie further comprises: vertical shock absorber, anti-snaking shock absorber and anti-rolling torsion bar. The embodiment also provides a specific implementation manner:

as shown in fig. 20, a damper integration seat 91 is attached to the outer end of the connector block 2. The damper integrated base 91 may be formed in a skeleton structure using a 3D printing technique, and may reduce the weight of the damper integrated base in addition to having a basic supporting function. The vertical shock absorber, the anti-hunting shock absorber and the anti-rolling torsion bar can be mounted on the shock absorber integrated seat 91.

Fig. 20 shows that one end of the anti-hunting shock absorber 93 is attached to the shock absorber integration seat 91, the anti-hunting shock absorber 93 extends in the longitudinal direction, and the other end thereof is attached to the vehicle body. Anti-hunting dampers 93 are used on faster vehicles to dampen hunting motions of the vehicle.

As shown in fig. 1, vertical shock absorber 94 extends in the vertical direction, and is connected at its bottom end to shock absorber integration seat 91 and at its top end to the vehicle body. Vertical shock absorbers 94 are used to dampen vertical forces between the truck and the vehicle body.

An anti-roll torsion bar 95 is attached to the shock absorber integration seat 91 and includes a laterally extending portion and a vertically extending portion, wherein the top of the vertically extending portion is attached to the vehicle body. The anti-roll torsion bar 95 is used to prevent the vehicle body from being excessively inclined, so as to improve the comfort and prevent the vehicle from rolling over.

The embodiment provides a railway vehicle, which adopts the bogie. The rail vehicle can be a diesel locomotive or an electric locomotive, and can be a motor train unit, a subway, a light rail or a tramcar and the like. The rail vehicle provided by the embodiment has the same technical effects as the bogie.

In the description of the present application, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be considered as limiting the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and encompass, for example, both fixed and removable connections or integral parts thereof; can be mechanically connected, electrically connected or can communicate with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as the case may be.

While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims

1. A double-deck side sill bogie, comprising:

two wheel pairs respectively arranged below the end parts of the side beams; the wheel pair comprises an axle, wheels and axle boxes which are symmetrically arranged on the axle;

2. The bogie of claim 1, further comprising: the driving device is used for driving the axle to rotate;

the driving device includes: direct drive motor and motor balancing pole, the rotor that directly drives the motor links to each other with the axletree, and the shell that directly drives the motor passes through motor balancing pole and links to each other with the connecting seat, and the shell that directly drives the motor passes through motor end cover and axle box is fixed.

3. The truck according to claim 1 or 2, wherein a top of the connecting seat is provided with a first side sill mounting groove extending in a longitudinal direction, and a middle portion of the side sill is received in the first side sill mounting groove; the depth of the first side beam mounting groove is smaller than the thickness of the middle of the lower side beam plate.

4. The bogie according to claim 3, wherein the longitudinal ends of the connecting seats are respectively provided with a single-pull-rod mounting portion;

the bogie further comprises:

a single pull rod; the single pull rod extends along the longitudinal direction, one end of the single pull rod is connected with the single pull rod mounting part on the connecting seat through an elastic node, and the other end of the single pull rod is connected with the axle box through the elastic node.

5. The truck of claim 3 wherein said side beams are made of a composite fiber material; the bogie further comprises: the first lower lining piece is arranged between the first side beam mounting groove and the middle part of the side beam;

the first lower liner includes:

the first lower substrate plate is arranged in parallel with the bottom surface of the first side beam mounting groove;

two first lower lining side plates erected at two transverse edges of the first lower lining plate; the height of the first lower lining side plate is greater than the depth of the first side beam mounting groove.

6. A bogie as claimed in claim 1 or 2, in which the primary suspension means comprises:

an elastic buffer part; the elastic buffer portion includes: the rigid metal layers and the buffer rubber layers are stacked and alternately arranged;

a side beam mounting portion made of rigid metal; the side beam mounting part is arranged at the top of the elastic buffer part; the top of the side beam mounting part is assembled with the side beam;

the side beam mounting part, the metal layers and the cushion rubber layer are formed into an integral structure through a vulcanization process.

7. The truck according to claim 6, wherein a top of the side sill mounting portion is provided with a second side sill mounting groove extending in the longitudinal direction, an end portion of the side sill being received in the second side sill mounting groove; the depth of the second side beam mounting groove is smaller than the thickness of the end part of the side beam.

8. The truck of claim 7 wherein the upper and lower side rails are made of a composite fiber material; the bogie further comprises: the second lower lining piece is arranged between the second side beam mounting groove and the end part of the lower side beam plate;

the second lower liner member includes:

the second lower substrate plate is arranged in parallel with the bottom surface of the second side beam mounting groove;

two second lower lining side plates which are erected on the two transverse edges of the second lower lining plate; the height of the second lower lining side plate is larger than the depth of the second side beam mounting groove or the same as the depth of the second side beam mounting groove.

9. The bogie of claim 6, further comprising:

a lifting member fixed at its top to the side sill mounting portion; the top of the axle box extends towards the longitudinal direction to form a lifting edge, and a lifting gap is formed in the lifting edge; the lower part of the lifting piece is accommodated in the lifting gap, and the bottom end of the lifting piece is provided with a lifting stop arm with the size larger than that of the lifting gap.

10. A rail vehicle, comprising: a bogie as claimed in any one of claims 1 to 9.