CN114084190B

CN114084190B - Single-layer side beam bogie and railway vehicle

Info

Publication number: CN114084190B
Application number: CN202111402597.9A
Authority: CN
Inventors: 楚伯刚; 李兆盈; 史志远; 楚京; 孟航; 李刚
Original assignee: CRRC Tangshan Co Ltd
Current assignee: CRRC Tangshan Co Ltd
Priority date: 2021-11-24
Filing date: 2021-11-24
Publication date: 2023-05-23
Anticipated expiration: 2041-11-24
Also published as: CN114084190A; WO2023093800A1

Abstract

The embodiment of the application provides a single-layer side beam bogie and rail vehicle, wherein, the bogie includes: two side beams arranged side by side; 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 which are respectively arranged below the end parts of the side beams; the wheel set comprises an axle, wheels symmetrically arranged on the axle and an axle box; a series of suspension units are 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 lightweight design.

Description

Single-layer side beam bogie and railway vehicle

Technical Field

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

Background

The bogie is an important component of the railway vehicle for carrying the vehicle body and for performing the running and steering functions. The bogie comprises a framework, a wheel set, a traction device, a buffer device and other structures, the framework commonly used generally comprises two side beams extending along the length direction of the vehicle and a cross beam connecting the two side beams, and the cross beam and the side beams are connected in various modes. After studying various forms of bogies, the skilled person has found that conventional bogies suffer from technical drawbacks, such as: the dead weight is large, so that the acting force of the wheel set is large, the abrasion of the wheel rail is large, and larger noise is generated; the framework is rigidly connected, so that the vibration reduction capability is poor, the carriage is larger in vibration, and the riding comfort is poor; the wheel weight load shedding rate is high, and the safety is reduced; the problem that anti roll ability is relatively poor makes the carriage easily take place to turn on one's side, and vertical buffer capacity is insufficient and leads to the carriage vibration great and makes the ride comfort degree relatively poor, and the dead weight is great and leads to traction efficiency lower, leads to assembly efficiency lower etc. because of the part installation overall arrangement is unreasonable.

Disclosure of Invention

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

According to a first aspect of embodiments of the present application, there is provided a single-layer side sill bogie comprising:

two side beams arranged side by side;

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 which are respectively arranged below the end parts of the side beams; the wheel set comprises an axle, wheels symmetrically arranged on the axle and an axle box;

a series of suspension units are disposed between each axle housing and the end of the side rail.

According to a second aspect of embodiments of the present application, there is provided a rail vehicle comprising: a single-layer side sill bogie as described above.

The bogie provided by the embodiment of the application abandons the traditional beam structure, adopts the connecting seat to connect and fix the single-layer side beam, adopts the traction device to connect the two connecting seats together, can greatly reduce the weight of the bogie, and is favorable for improving the traction efficiency of the railway vehicle. The connecting seat is provided with a plurality of interfaces for connecting parts such as side beams, traction devices and the like, and the structure of the bogie is simplified on the basis of meeting the basic functions of the bogie, so that the lightweight design is facilitated.

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 embodiments of the application and together with the description serve to explain the application and do not constitute an undue limitation to the application. In the drawings:

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

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

FIG. 3 is a schematic view of a power truck according to an embodiment of the present disclosure;

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

FIG. 5 is a schematic view of a side sill in a bogie according to an embodiment of the present application;

fig. 6 is a schematic structural diagram of a connecting seat in a bogie according to an embodiment of the present application;

FIG. 7 is an exploded view of a side sill and connector assembly in a truck provided in an embodiment of the present application;

fig. 8 is a schematic structural diagram of a wheel set in a bogie according to an embodiment of the present application;

FIG. 9 is a schematic view of a primary suspension device in a bogie according to an embodiment of the present application;

FIG. 10 is a schematic view of a truck side sill and primary suspension assembly provided in accordance with an embodiment of the present application;

FIG. 11 is a cross-sectional view of a side sill in a truck with a primary suspension assembly provided in an embodiment of the present application;

FIG. 12 is an exploded view of a side sill and primary suspension assembly in a truck provided in accordance with an embodiment of the present application;

FIG. 13 is a cross-sectional view of a secondary suspension device and connection mount assembly in a truck provided in an embodiment of the present application;

FIG. 14 is a schematic view of a secondary suspension device and a connection seat assembly in a bogie according to an embodiment of the present disclosure;

fig. 15 is a schematic structural diagram of an assembly of a brake device and a connection seat in a bogie according to an embodiment of the present application;

fig. 16 is a schematic structural diagram of a bogie axle box and a connecting seat connected by a single pull rod according to an embodiment of the present disclosure;

FIG. 17 is an exploded view of an axle housing and a connection mount of a truck in accordance with an embodiment of the present application connected by a single tie rod;

fig. 18 is a schematic structural view of a traction device connected to a connection seat in a bogie according to an embodiment of the present application;

FIG. 19 is an exploded view of a truck draft gear attached to a hitch base provided in an embodiment of the present application;

FIG. 20 is a schematic view of the structure of a kingpin in a truck provided in an embodiment of the present application;

FIG. 21 is a side view of a kingpin in a truck provided in an embodiment of the present application;

FIG. 22 is a schematic structural view of a transverse shock absorber assembly in a truck provided in an embodiment of the present application;

fig. 23 is a schematic structural view of an assembly of a driving device and a connection seat in a bogie according to an embodiment of the present application;

fig. 24 is a top view of an assembly of a driving device and a connection base in a bogie according to an embodiment of the present application.

Reference numerals:

1-side beams;

2-connecting seats; 21-a first side beam mounting boss; 22-fixing seats; 221-fixing bolts; 223-a first underlayment; 23-two-system mounting seats; 231-second series positioning holes; 24-braking hanging seat; 241—hanger mounting holes; 25-connecting the side walls by the pull rod; 251-tie rod mounting holes; 261-first connection portion; 2611-a first central bore; 2612-first bolt hole; 262-a second connection; 2621-a second central bore; 2622-second bolt holes; 27-a lateral stop; 28-a motor mounting portion;

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

4-traction means; 41-a traction beam; 411-beam body; 412-a first connection disc; 413—a first connection bolt; 414-connecting pins; 415-elastic buffer sleeve; 416-a connection flange; 417-second connecting bolts; 42-a traction pin; 421-body connection; 422-lifting arm; 4221-damper assembly space; 4222-damper mounting holes; 43-longitudinal stop assembly; 431-inner mount; 432-longitudinal stops; 433-outside mount; 44-a transverse stop assembly;

5-a primary suspension device; 51-an elastic buffer; 52-side beam mounting portions; 521-second side rail mounting slots; 522—securing assembly mounting holes; 53-a tie-down assembly; 533-fixed assembly connection bolt; 55-lifting and hanging parts;

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

71-a direct drive motor; 72-a motor balance bar;

8-a braking device;

91-a damper integration base; 92-transverse vibration dampers; 93-antihunting damper; 94-vertical vibration damper; 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 detailed description of exemplary embodiments of the present application is given with reference to the accompanying drawings, and it is apparent that the described embodiments are only some of the embodiments of the present application and not exhaustive of all the embodiments. It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other.

The embodiment provides a single-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 an embodiment of the present application. As shown in fig. 1 and 2, the present embodiment provides a bogie including: side beams 1, connecting seats 2, wheel sets, traction devices 4 and a series of suspension devices 5.

The side member 1 has a single-layer structure, two in number, extending in the longitudinal direction. The two side beams 1 are arranged side by side with a space left between them. The number of the connecting seats 2 is two, one connecting seat 2 is arranged below the middle part of one side beam 1, and the connecting seats 2 are used for supporting the side beam 1.

The traction device 4 is connected between the two connection blocks 2, the traction device 4 also being intended for connection to the body of the rail vehicle for transmitting longitudinal traction and braking forces between the body and the bogie.

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

A primary suspension 5 is provided between the axle housing 33 and the end of the side member 1 for supporting the side member 1 and for damping the vertical force between the side member 1 and the wheel set 3.

The bogie provided by the embodiment abandons the traditional beam structure, adopts the connecting seat to connect and fix the single-layer side beams, adopts the traction device to connect the two connecting seats together, can greatly reduce the weight of the bogie, and is beneficial to improving the traction efficiency of the railway vehicle. The connecting seat is provided with a plurality of interfaces for connecting parts such as side beams, traction devices and the like, and the structure of the bogie is simplified on the basis of meeting the basic functions of the bogie, so that the lightweight design is facilitated.

When no drive is provided on the bogie, the bogie acts as a non-power bogie. When the driving means is provided on the bogie, the bogie acts 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 top view of the power bogie provided in the embodiment of the present application. As shown in fig. 3 and 4, the driving device includes: a direct drive motor 71 and a motor balance bar 72. The direct drive motor 71 is disposed on the axle 31, the rotor is connected to the axle 31, and the stator of the direct drive motor 71 is fixedly connected to the housing. The connection base 2 also provides a connection interface with the direct drive motor 71, and the housing of the direct drive motor 71 is connected with the connection base 2 through a motor balance rod 72. The housing of the direct drive motor 71 is fixed to the axlebox 33 via a motor end cover.

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

Further, the bogie further comprises a braking device 8 for braking the wheels 32. In this embodiment, the braking device 8 is fixed to the connection base 2 using a brake caliper. During braking, the brake calipers clamp the disc faces on both sides of the wheel 32 for braking.

Fig. 5 is a schematic structural view of a single-layer side member in a bogie according to an embodiment of the present application. As shown in fig. 5, the side member 1 is a single-layer side member, and the thickness of the side member 1 gradually decreases in the direction from the middle to the end of the side member 1, that is: the side member 1 has a shape with a thick middle and thin ends.

Based on the design thought, the embodiment provides a specific implementation mode of the bogie:

fig. 6 is a schematic structural diagram of a connecting seat in a bogie according to an embodiment of the present application. As shown in fig. 6, the top of the connection base 2 is provided with a first side beam mounting boss 21, the surface of the first side beam mounting boss 21 is a plane, the planar shape is a rectangle, and the long side of the rectangle is parallel to the longitudinal direction. The middle portion of the side member 1 is provided on the first side member mounting boss 21. The first side sill mounting boss 21 is used to adjust the height of the side sill 1 so that it meets the side sill height requirement.

Fig. 7 is an exploded view of a side sill and a coupler yoke assembly in a truck provided in an embodiment of the present application. As shown in fig. 7, one implementation is: the fixing seat 22 is arranged above the side beam 1 in a crossing way, and two transverse ends of the fixing seat 22 extend downwards from two sides of the side beam 1. The fixing seat 22 serves to restrict the vertical displacement of the side member 1.

One implementation is as follows: the top of the fixing base 22 has a long strip-like structure extending in the lateral direction, and both ends thereof extend downward from both sides of the side member 1 and are connected to the connection base 2.

Another implementation is: the holder 22 includes: fixed roof, fixed curb plate and fixing bolt. The fixed top plate extends along the direction parallel to the side beams 1, the fixed side plates are vertically arranged at two transverse ends of the fixed top plate, and the fixed side plates extend downwards. 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 formed between the fixed top plate and the fixed side plate in a surrounding mode. 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 bolts 221 pass through bolt holes provided in the fixing top plate and the fixing side plate in sequence and then are connected to the connection base 2.

In this embodiment, the side member 1 may be made of composite fiber, for example: 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 member 1 is made of a carbon fiber material, further, a first under-lining member 223 is provided between the first side member mounting boss 21 and the middle portion of the side member 1 for protecting the side member 1 from abrasion after the side member 1 is in contact with the joint seat 3 for a long period of time.

The first lower liner 223 may be a flat plate-like structure disposed in parallel with the surface of the first side rail mounting boss 21. The first under-lining member 223 has the same width as the middle portion of the side member 1 or smaller than the middle portion of the side member 1 for protection of the side member 1.

When the side beam 1 is made of carbon fiber materials, the side beam 1 deforms itself under different loads of the vehicle body, and vertical loads can be adjusted and buffered. When the side member 1 is subjected to a smaller first vertical load, for example: the vehicle is in an empty state, the top surfaces of the side beams 1 are all plane, and the thickness of the middle part of the side beam 1 is a first thickness value. When the side member 1 is subjected to a larger second vertical load, for example: the vehicle is in a full load state, the side members 1 are deformed, the middle portions thereof are lowered, and the both ends are raised. The side beam 1 deforms itself, and can be used as a three-system suspension device to buffer vertical load, thereby further reducing vibration of the vehicle body and improving riding comfort.

The thickness of the middle part of the side beam 1 is larger than that of the end part; the thickness of the side member 1 gradually decreases from the middle toward the end of the side member 1. In this embodiment, the bottom surface of the side member 1 is approximately a plane, and the middle is an upwardly arched surface.

On the basis of the technical scheme, the implementation mode of the wheel set and the assembly mode among the wheel set, the side beams and the connecting seats are described in detail in the embodiment:

fig. 8 is a schematic structural diagram of a wheel set in a bogie according to an embodiment of the present application. As shown in fig. 8, the wheel set 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 top surface of the axle housing 33 is planar, and a series of positioning holes 331 are provided in the middle portion thereof for assembling with a series of suspension devices 5.

Fig. 9 is a schematic structural view of a primary suspension device in a bogie according to an embodiment of the present application. As shown in fig. 9, the primary suspension device 5 includes: an elastic buffer portion 51 and a side member mounting portion 52. The elastic cushion 51 includes laminated and alternately arranged rigid metal layers and cushion rubber layers, and the thickness of a single cushion rubber layer is greater than that of a single rigid metal layer. Located at the lowermost layer is a rigid metal layer with a locating pin disposed on the bottom surface thereof, which is insertable into a series of locating holes 331 in the top surface of the axle housing 33 for locating and limiting the horizontal displacement of a series of suspension devices.

The rigid metal layer and the buffer rubber layer are both structures with high middle and low two ends, and have larger transverse rigidity, so that transverse force between the wheel set 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 device is suitable for the characteristics of poor bonding force between carbon fiber side beam layers and adverse bearing of the transverse force. .

The side member mounting portion 52 is made of a rigid metal, the side member mounting portion 52 is provided at the top of the elastic cushion portion 51, and the top of the side member mounting portion 52 is assembled with the side member 1. The side member mounting portion 52 is formed as an integral structure with each metal layer and cushion rubber layer by a vulcanization process.

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

Further, as shown in fig. 1 to 4, a tie-down fixing member 53 is employed to straddle over the end portion of the side member 1, and both lateral ends of the tie-down fixing member 53 extend downward from both sides of the side member 1 to be connected to a tie-down suspension 5. A fastening member 53 is made of a rigid material for fastening the side member 1 and restricting the lateral displacement of the side member 1.

Fig. 10 is a schematic structural view of an assembly of a side sill in a bogie and a primary suspension device according to an embodiment of the present application, fig. 11 is a cross-sectional view of an assembly of a side sill in a bogie and a primary suspension device according to an embodiment of the present application, and fig. 12 is an exploded view of an assembly of a side sill in a bogie and a primary suspension device according to an embodiment of the present application. As shown in fig. 10 to 12, the end of the side member 1 extends above the primary suspension 5.

One specific implementation of the tie-down assembly 53 is: comprises a top plate and supporting legs. The roof is equipped with the bolt hole. The supporting legs are vertically arranged on the lower surface of the top plate; the quantity of landing leg is a plurality of, and the symmetry sets up the both sides of upside beam slab. The top end of the leg is connected to the top plate, the bottom end is in contact with the side beam mounting portion 52 in the primary suspension 5, and the leg is provided with a bolt hole penetrating up and down. The fixing assembly connection bolt 533 sequentially passes through the bolt hole of the top plate and the bolt hole of the leg to penetrate into the fixing assembly mounting hole 522 for fixing.

In this embodiment, the number of the supporting legs is two, and the supporting legs are symmetrically arranged at two transverse ends of the top plate. A certain distance is left between the one fastening member 53 and the side member 1, and the number of the one fastening member 53 is at least two, and the one fastening member 53 is sequentially arranged at intervals in the longitudinal direction. Specifically, four first-fastening components 53 are sequentially arranged along the longitudinal direction, two first-fastening components 53 on the outer side are connected with the lifting member, and two first-fastening components 53 on the inner side are connected with the first-fastening device.

The lifting member 55 is mounted to the primary suspension 5 and the axle box 33 for integrally lifting the bogie. Specifically, as shown in fig. 1, 8, 10, and 12, the top of the axle box 33 extends in the longitudinal direction to form a lifting edge 332, and a lifting hook is provided at the lower portion of the lifting member 55 and is engaged below the lifting edge 332. In this embodiment, the lifting member 55 has a t-shaped structure, the top of which is connected to a fastening assembly 53, and the bottom of which has a hook-shaped structure, which is hooked under the lifting edge 332.

Further, the bogie provided in this embodiment further includes a secondary suspension device 6 disposed on the connecting seat 2 and located outside the side beam 1. The secondary suspension device 6 is used for supporting the vehicle body and buffering the vertical force between the vehicle body and the bogie. In conventional bogies, the secondary suspension device 6 is typically provided at the top of the side sill or at the top of the bolster. Unlike conventional bogies are: in the bogie proposed in the present application, the secondary suspension device 6 is provided on the connection base 2 without a direct connection relationship with the side member 1.

The present embodiment provides an implementation manner:

fig. 13 is a cross-sectional view of an assembly of a secondary suspension device and a connection seat in a bogie according to an embodiment of the present application, and fig. 14 is a schematic structural diagram of an assembly of a secondary suspension device and a connection seat in a bogie according to an embodiment of the present application. As shown in fig. 6, 13 and 14, the secondary suspension device 6 may be a rubber stack 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 arranged at the top of the connecting seat 2 correspondingly and is used for assembling a secondary suspension device 6. Specifically, the middle position of the top of the connecting seat 2 is provided with a first side beam installation boss 21, the second system installation seat 23 is located at the lateral outer side of the first side beam installation boss 21, the second system installation seat 23 is provided with a second system positioning hole 231, and a second system positioning pin 61 is inserted into the second system positioning hole 231 to limit the horizontal displacement of the second system suspension device 6.

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

fig. 15 is a schematic structural diagram of an assembly of a brake device and a connection seat in a bogie according to an embodiment of the present application. As shown in fig. 6 and 15, brake shoes 24 are provided at both longitudinal ends of the secondary mounting shoes 23, respectively, and vertically extending shoe mounting holes 241 are provided in the brake shoes 24. The present embodiment adopts a brake caliper as a braking device, and the brake caliper is fixed by bolts through the hanger mounting holes 241. Two brake hanging seats 24 are arranged on one connecting seat 2, four brake clamps are arranged on the bogie, and four wheels are braked.

Fig. 16 is a schematic structural diagram of a bogie axle box and a connecting seat connected by a single pull rod according to an embodiment of the present application, and fig. 17 is an exploded view of a bogie axle box and a connecting seat connected by a single pull rod according to an embodiment of the present application. As shown in fig. 16 and 17, a single tie rod 34 is employed to connect between the connection block 2 and the axle housing 33 for transmitting longitudinal forces.

Specifically, as shown in fig. 8, 10, 12, and 17, a tie rod connecting seat 334 is provided on a longitudinal end surface of the axle box 33, and a bolt hole is provided in the tie rod connecting seat 334. The number of the pull rod connecting seats 334 is two, and a gap capable of accommodating the end part of the single pull rod 34 is reserved between the two.

The longitudinal ends of the connection base 2 are respectively provided with a single-pull-rod mounting portion, specifically, the connection base 2 has two pull-rod mounting side walls 25 extending in the transverse direction, and pull-rod mounting holes 251 capable of accommodating the ends of the single pull rods 34 are formed in the pull-rod mounting side walls. Bolt holes are formed in the tie rod mounting side walls 25 on both sides of the tie rod mounting hole 251.

The single tie rod 34 extends in the longitudinal direction and is provided at both ends thereof with mounting holes for receiving the elastic nodes 341. The size of the mounting hole at one end is larger, and the size of the mounting hole at the other end is smaller. The elastic node 341 is press-fitted into the mounting hole. The elastic node 341 is formed by vulcanizing outer metal and inner rubber, and has certain strength and certain buffering capacity. The elastic node 341 has connection protrusions at both ends, and bolt holes are formed in the connection protrusions, and the connection protrusions of the elastic node are respectively connected with the tie rod connection base 334 on the axle box 33 and the tie rod installation side wall 25 on the connection base 2 by bolts.

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

fig. 18 is a schematic structural diagram of a traction device in a bogie according to an embodiment of the present application connected to a connection seat, and fig. 19 is an exploded view of a traction device in a bogie according to an embodiment of the present application connected to a connection seat. As shown in fig. 18 and 19, the traction device 4 includes: draft sill 41, draft pin 42, longitudinal stop assembly 43 and transverse stop assembly 44. The number of the traction beams 41 is two, and the traction beams are arranged side by side, and a containing space is reserved between the traction beams and the containing space. The traction beam 41 extends in the lateral direction and is connected between the two connection blocks 2.

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

The number of the longitudinal stop assemblies 43 is two, and the longitudinal stop assemblies are respectively arranged between the traction pin 42 and the traction beam 41 and are used for buffering the longitudinal force between the traction pin 42 and the traction beam 41 so as to avoid rigid collision between the traction pin 42 and the traction beam 41.

The number of the lateral stop assemblies 44 is two, and the lateral stop assemblies are respectively arranged between the traction pin 42 and the connecting seat 2 and are used for limiting the excessive lateral displacement between the vehicle body and the bogie. The transverse stop assembly 44 can be specifically arranged on the connecting seat 2, and a certain gap is reserved between the transverse stop assembly 44 and the traction pin 42 when the vehicle runs straight; the kingpin 42 contacts a lateral stop assembly 44 on one side when the vehicle body is subjected to excessive lateral forces.

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

As shown in fig. 6, the first traction beam interface is a first connection portion 261 provided on the connection seat 2, and the first connection portion 261 is provided with a first center hole 2611 and a plurality of first bolt holes 2612 provided around the first center hole 2611.

As shown in fig. 19, the traction beam 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 accommodating cavity. One side of the first connection plate 412 is provided with a first inner boss which can be pressed in the first accommodating cavity, and the other side is provided with a first outer boss which can be accommodated in the first central hole 2611. The first connection plate 412 is further provided with a plurality of bolt holes disposed around the first inner boss. The first connection bolt 413 is sequentially fixed through the bolt hole on the first connection plate 412 and the first bolt hole 2612 on the first connection portion 216.

As shown in fig. 6, the second traction beam interface is a second connection portion 262 provided on the connection base 2. The second connection portion 262 is provided with a second central hole 2621 and a plurality of second bolt holes 2622 disposed around the second central hole 2621.

As shown in fig. 19, the other end of the beam 411 is provided with a second receiving cavity. The traction beam 41 further includes: a connecting pin 414, an elastic buffer sleeve 415, a connecting flange 416 and a second connecting bolt 417. Wherein, the end of the connecting pin 414 facing the traction beam 41 is provided with a second inner boss capable of being pressed in the second accommodating cavity, the connecting pin 414 is further provided with a plurality of bolt holes surrounding the second inner boss, and the connecting pin 414 is inserted into the second central hole 2621 toward the end of the connecting seat 2.

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

The connection flange 416 is located at a side of the second connection portion 262 facing away from the connection pin 414, and the second connection bolt 417 is connected through the bolt hole on the connection flange 416, the second bolt hole 2622 on the second connection portion 262, and the bolt hole on the connection pin 414 in this order. Further, the connection flange 416 is a square flange.

In the above-described embodiment, the beam body 411 in the traction beam 41 may be a cylindrical structure, and the inside thereof may be hollow.

The above-mentioned longitudinal stop assembly 43 comprises: an inner mount 431, a longitudinal stop 432, and an outer mount 433. The inner fixing member 431 has an arc surface that conforms to the shape of the draft sill 41, and is disposed around the inner side of the draft sill. The outer fixing member 433 has an arc surface that conforms to the shape of the draft sill 41, and the outer fixing member 433 is disposed around the outside of the draft sill 41. The longitudinal stop 432 is located between the inboard fixture 431 and the kingpin 42. Bolts are used to connect the outside fixing member, the inside fixing member, and the longitudinal stopper together from the upper and lower sides of the draft sill 41.

As shown in fig. 6, the end surface of the connection seat 2 facing the traction beam 41 is provided with a transverse stop portion 27, and the transverse stop portion 27 is located between the first traction beam interface and the second traction beam interface. The lateral stop assembly 44 includes: a transverse mount and a transverse stop. Wherein the transverse mounting member is bolted to the transverse stop 27, which is fixed to the side of the transverse mounting member facing the towing pin 42. A lateral stop distance is left between the lateral stops and the kingpin 42.

Fig. 20 is a schematic structural view of a traction pin in a bogie provided in an embodiment of the present application, fig. 21 is a side view of a traction pin in a bogie provided in an embodiment of the present application, and fig. 22 is a schematic structural view of a transverse damper assembly in a bogie provided in an embodiment of the present application. As shown in fig. 20 to 22, the top end of the traction pin 42 is provided with a vehicle body connecting portion 421, and the vehicle body connecting portion 421 is provided with a bolt hole connected to the bottom end of the vehicle body by a bolt. The bottom end of the traction pin 42 is provided with a lifting arm 422, the lifting arm 422 extending in the longitudinal direction. The number of lifting arms 422 is two, each extending in opposite directions. The lifting arm 422 is used for lifting the bogie.

A damper fitting space 4221 is left between the two lifting walls 422 into which the lateral damper 92 is inserted. The lifting wall 422 is provided with damper mounting holes 4222. One end of the lateral 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 connection base 2 through an elastic node. Lateral shock absorber 92 serves to cushion lateral forces between kingpin 42 and connection block 2.

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

fig. 23 is a schematic structural diagram of an assembly of a driving device and a connection seat in a bogie according to an embodiment of the present application, and fig. 24 is a top view of an assembly of a driving device and a connection seat in a bogie according to an embodiment of the present application. As shown in fig. 23 and 24, one end of the motor balance bar 72 is connected to the housing of the direct-drive motor 71 through an elastic node. The other end of the motor balance bar 72 diverges into two connection ends, each of which is connected to the connection base 2 through an elastic node.

Specifically, as shown in fig. 6, the motor connecting portion 28 is disposed at the inner end of the top of the connecting base 2. The number of motor connecting portions 28 is two, and a space for accommodating the end portion of the motor balance bar 72 is left therebetween. The motor connecting portion 28 is provided with a bolt hole, and is connected with an elastic node on the motor balance rod 72 through a bolt.

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

as shown in fig. 18, a damper integration seat 91 is employed to connect to the outer end portion of the connection seat 2. The shock absorber integrated seat 91 can be formed into a skeleton structure by adopting a 3D printing technology, and has a basic supporting function, so that the weight is reduced. The vertical damper, the anti-hunting damper, and the anti-roll torsion bar described above may be mounted on the damper integration seat 91.

Fig. 18 shows that one end of the anti-hunting damper 93 is connected to the damper integration seat 91, the anti-hunting damper 93 extends in the longitudinal direction, and the other end thereof is connected to the vehicle body. Anti-roll damper 93 is used on a faster vehicle to dampen roll motion of the vehicle.

As shown in fig. 1, the vertical damper 94 extends in the vertical direction, and has a bottom end connected to the damper integration seat 91 and a top end connected to the vehicle body. The vertical damper 94 is used to dampen vertical forces between the truck and the vehicle body.

The anti-roll torsion bar 95 is connected to the damper integration seat 91, including a laterally extending portion and a vertically extending portion, wherein the top of the vertically extending portion interfaces with the vehicle body. The anti-roll torsion bar 95 is used to prevent the vehicle body from excessively tilting, thereby improving comfort and preventing the vehicle from rollover.

The embodiment provides a railway vehicle, and the bogie is adopted. The rail vehicle can be an internal combustion locomotive or an electric locomotive, and can be a motor train unit, a subway, a light rail or a tramcar, etc. The railway vehicle provided by the embodiment has the same technical effects as the bogie.

In the description of the present application, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate an orientation or positional relationship based on that shown in the drawings, merely for convenience of description and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and thus should not be construed as limiting the present application.

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

In this application, unless specifically stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may communicate with each other; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.

While 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. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the application.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present application without departing from the spirit or scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims and the equivalents thereof, the present application is intended to cover such modifications and variations.

Claims

1. A single-layer side sill bogie comprising:

two side beams arranged side by side;

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; the traction device comprises two traction beams; a first traction beam interface and a second traction beam interface are arranged on the side surface of each connecting seat facing the traction device; one end of each traction beam is connected with one connecting seat through a first traction beam interface, and the other end of each traction beam is connected with the other connecting seat through a second traction beam interface;

the fixed seat is spanned above the side beams; the top of the fixing seat is in a strip shape and extends along the transverse direction; the two transverse ends of the fixed seat extend downwards from the two sides of the side beams to be connected with the connecting seat;

a series of suspension devices disposed between each axle housing and the end of the side rail;

the secondary suspension device is arranged on the connecting seat and is positioned on the outer side of the side beam.

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

the driving device includes: the motor and the motor balance rod are directly driven, the rotor of the motor is connected with the axle, the shell of the motor is connected with the connecting seat through the motor balance rod, and the shell of the motor is fixed with the axle box through the motor end cover.

3. A bogie as claimed in claim 1 or claim 2 in which the top of the connecting seat is provided with a first side beam mounting boss and the centre of the side beam is disposed above the first side beam mounting boss.

4. A bogie as claimed in claim 3 wherein the longitudinal ends of the connecting seats are each provided with a single tie 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 installation 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. A bogie as claimed in claim 3 in which the side beams are made of a composite fibre material; the bogie further comprises: the first lower lining piece is arranged between the first side beam mounting boss and the middle part of the side beam, and the width of the first lower lining piece is the same as or smaller than that of the middle part of the side beam.

6. The bogie of claim 5, wherein the side beam has a thickness at the middle portion that is greater than the thickness at the end portions; the thickness of the side member gradually decreases from the middle to the end of the side member.

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

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

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

8. The bogie of claim 7, wherein the top of the side beam mounting portion is provided with a second side beam mounting groove extending in the longitudinal direction, and an end portion of the side beam is accommodated in the second side beam mounting groove; the second side beam mounting groove has a depth less than a thickness of the side beam end portion.

9. The bogie as recited in claim 7, further comprising:

a lifting member whose top is fixed to the side beam mounting portion; the top of the axle box extends towards the longitudinal direction to form a lifting edge; the lower part of the lifting part is clamped below the lifting edge.

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