WO2023093797A1 - Double-layer side beam bogie and rail vehicle - Google Patents

Abstract

A double-layer side beam bogie and a rail vehicle. The bogie comprises: two side beams (1) arranged side by side, wherein each side beam (1) comprises an upper side beam plate (11) and a lower side beam plate (12), which are stacked, the middles of the upper side beam plate (11) and the lower side beam plate (12) being in contact, and there being a gap between the ends of the upper side beam plate (11) and the lower side beam plate (12); two connecting seats (2), one connecting seat (2) being arranged below the middle of one side beam (1), and the two connecting seats (2) being connected by means of a traction device (4); two wheel pairs, which are respectively arranged below the ends of the side beams (1), each wheel pair comprising an axle (31), and wheels (32) and axle boxes (33), which are respectively symmetrically arranged on the axle (31); and primary suspension devices (5) arranged between each axle box (33) and the ends of the side beams (1).

Description

Double-deck side beam bogies and rail vehicles technical field

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

Background technique

The bogie is an important part of the rail vehicle, which is used to carry the car body and realize the running and steering functions. The bogie includes structures such as frame, wheelset, traction device, buffer device, etc. The commonly used frame usually includes two side beams extending along the length of the vehicle and a cross beam connecting the two side beams. The connection between the cross beam and the side beams There are many ways. After studying various forms of bogies, technicians found that there are some technical defects in traditional bogies, such as: large self-weight, resulting in large force on wheel sets, large wear of wheel and rail, and large noise; rigidity of frame Connection, poor vibration damping ability, resulting in greater vibration of the carriage, poor ride comfort; large wheel load reduction rate, reducing safety; poor anti-rolling ability makes the carriage prone to rollover, vertical buffer capacity Insufficiency leads to greater vibration of the cabin and poor ride comfort, higher self-weight leads to lower traction efficiency, and lower assembly efficiency due to unreasonable component installation layout.

Contents of the invention

Embodiments of the present application provide a double-deck side beam bogie and a rail vehicle.

According to a first aspect of an embodiment of the present application, a double-deck side beam bogie is provided, including:

Two side sills arranged side by side, the side sills include an upper side sill and a lower side sill stacked, the upper side sill is in contact with the middle of the lower side sill, and there is a gap between the ends;

Two connecting seats; one connecting seat is set under the middle part of a side beam; the two connecting seats are connected by a traction device;

Two wheel sets are respectively arranged under the ends of the side beams; the wheel sets include axles, wheels and axle boxes symmetrically arranged on the axles;

A primary suspension device is provided between each axle box and the end of the side member.

According to a second aspect of the embodiments of the present application, a rail vehicle is provided, including: the above-mentioned double-layer side beam bogie.

The bogie provided by the embodiment of this application abandons the traditional beam structure, uses the connecting seat to connect and fix the double-layer side beam, and uses the traction device to connect the two connecting seats together, which can greatly reduce the weight of the bogie itself. The weight is conducive to improving the traction efficiency of rail vehicles. Moreover, the connecting seat provides multiple interfaces for connecting components such as side beams, traction devices and secondary suspension devices. On the basis of satisfying the basic functions of the bogie, it simplifies the structure of the bogie and facilitates lightweight design.

Description of drawings

The drawings described here are used to provide a further understanding of the application and constitute a part of the application. The schematic embodiments and descriptions of the application are used to explain the application and do not constitute an improper limitation to the application. In the attached picture:

Fig. 1 is the schematic structural view of the non-powered bogie provided by the embodiment of the present application;

Fig. 2 is the top view of the non-powered bogie provided by the embodiment of the present application;

Fig. 3 is the schematic structural view of the power bogie provided by the embodiment of the present application;

Fig. 4 is the top view of the power bogie provided by the embodiment of the present application;

Fig. 5 is a schematic structural view of the connecting seat in the bogie provided by the embodiment of the present application;

Fig. 6 is a schematic structural view of the side beam in the bogie provided by the embodiment of the present application;

Fig. 7 is an exploded view of the assembly of the side beam and the connecting seat in the bogie provided by the embodiment of the present application;

Fig. 8 is a schematic diagram of the side beam in the bogie provided by the embodiment of the present application subjected to the first vertical load;

Fig. 9 is a schematic diagram of a side beam subjected to a second vertical load in the bogie provided by the embodiment of the present application;

Fig. 10 is a schematic structural view of the wheel set in the bogie provided by the embodiment of the present application;

Fig. 11 is a schematic structural view of the primary suspension device in the bogie provided by the embodiment of the present application;

Fig. 12 is a schematic structural diagram of the assembly of the safety stop in the bogie provided by the embodiment of the present application;

Fig. 13 is a cross-sectional view of the assembly of the safety stop in the bogie provided by the embodiment of the present application;

Fig. 14 is an exploded view of the safety stop assembly in the bogie provided by the embodiment of the present application;

Figure 15 is a cross-sectional view of the assembly of the secondary suspension device and the connecting seat in the bogie provided by the embodiment of the present application;

Fig. 16 is a structural schematic diagram of the assembly of the secondary suspension device and the connecting seat in the bogie provided by the embodiment of the present application;

Fig. 17 is a structural schematic diagram of the assembly of the braking device and the connecting seat in the bogie provided by the embodiment of the present application;

Fig. 18 is a structural schematic diagram of the connection between the bogie center axle box and the connecting seat provided by the embodiment of the present application through a single tie rod;

Fig. 19 is an exploded view of the axle box of the bogie provided by the embodiment of the present application and the connecting seat connected by a single tie rod;

Fig. 20 is a schematic structural diagram of the connection between the traction device and the connecting seat in the bogie provided by the embodiment of the present application;

Figure 21 is an exploded view of the connection between the traction device and the connecting seat in the bogie provided by the embodiment of the present application;

Fig. 22 is a schematic structural view of the traction pin in the bogie provided by the embodiment of the present application;

Fig. 23 is a side view of the traction pin in the bogie provided by the embodiment of the present application;

Fig. 24 is a schematic structural diagram of the assembly of the transverse shock absorber in the bogie provided by the embodiment of the present application;

Fig. 25 is a structural schematic diagram of the assembly of the driving device and the connecting seat in the bogie provided by the embodiment of the present application;

Fig. 26 is a top view of the assembly of the driving device and the connecting seat in the bogie provided by the embodiment of the present application.

Reference signs:

1- side beam; 11- upper side beam plate; 12- lower side beam plate;

2-connecting seat; 21-first side beam installation groove; 22-fixing seat; 221-fixing bolt; 222-first upper lining; 223-first lower lining; 23-second series mounting seat; 231-second System positioning hole; 24-brake hanger; 241-hanger installation hole; 25-tie rod connection side wall; 251-tie rod installation hole; 261-first connecting part; 2611-first center hole; 2612-first bolt Hole; 262-the second connection part; 2621-the second center hole; 2622-the second bolt hole; 27-the lateral stop part; 28-the motor installation part;

31-axle; 32-wheel; 33-axle box; 331-first positioning hole; 332-lifting edge; 333-lifting gap; 334-tie rod connection seat; 34-single tie rod; 341-elastic node;

4-traction device; 41-traction beam; 411-beam body; 412-first connecting plate; 413-first connecting bolt; 414-connecting pin; 415-elastic buffer sleeve; 416-connecting flange; 417-second Connecting bolt; 42-traction pin; 421-car body connecting part; 422-lifting arm; 4221-shock absorber assembly space; 4222-shock absorber installation hole; 43-longitudinal stop assembly; 432-longitudinal stop piece; 433-outside fixing piece; 44-transverse stop assembly;

5- primary suspension device; 51- elastic buffer part; 52- side beam installation part; 521- second side beam installation groove; 522- safety stop installation hole; 53- safety stop; 531- first stop frame ; 532-the second stop frame; 533-stop connecting bolts; 54-the second lower lining; 55-lifting parts;

6-Second series suspension device; 61-Second series positioning pin;

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

8 - braking device;

91-shock absorber integrated seat; 92-transverse shock absorber; 93-anti-snaking shock absorber; 94-vertical shock absorber; 95-anti-rolling torsion bar.

Detailed ways

In order to make the technical solutions and advantages in the embodiments of the present application clearer, the exemplary embodiments of the present application will be further described in detail below in conjunction with the accompanying drawings. Apparently, the described embodiments are only part of the embodiments of the present application, and Not an exhaustive list of all embodiments. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

This embodiment provides a double-layer side beam bogie, which can be applied to rail vehicles. In this embodiment, the vehicle length direction is called the longitudinal direction, the vehicle width direction is called the horizontal direction, and the vehicle height direction is called the vertical direction, vertical direction or vertical direction.

Fig. 1 is a schematic structural diagram of a non-powered bogie provided by an embodiment of the present application, and Fig. 2 is a top view of a non-powered bogie provided by an embodiment of the present application. As shown in FIG. 1 and FIG. 2 , the present embodiment provides a bogie, including: a side beam 1 , a connecting seat 2 , a wheel set, a traction device 4 and a primary suspension device 5 .

The side beams 1 are two in number and extend in the longitudinal direction. The two side beams 1 are arranged side by side with a space between them. The side sill 1 includes an upper side sill and a lower side sill stacked in layers, the upper side sill is in contact with the middle of the lower side sill, and there is a gap between the ends. Both the upper side beam plate and the lower side beam plate are thick in the middle and thin in both ends. There are two connecting seats 2 , one connecting seat 2 is arranged under the middle part of a side beam 1 , and the connecting seat 2 is used to support the side beam 1 .

The traction device 4 is connected between the two connecting seats 2, and the traction device 4 is also used to connect with the car body of the rail vehicle, and is used to transmit longitudinal traction force and braking force between the car body and the bogie.

There are two wheel sets, which are respectively arranged under the ends of the side beams 1 . The wheel sets include: an axle 31 , wheels 32 and axle boxes 33 symmetrically arranged on the axle 31 .

The primary suspension device 5 is arranged between the axle box 33 and the end of the side beam 1 for supporting the side beam 1 and buffering the vertical force between the side beam 1 and the wheel set 3 .

The bogie provided in this embodiment abandons the traditional beam structure, uses the connecting seat to connect and fix the double-layer side beam, and uses the traction device to connect the two connecting seats together, which can greatly reduce the weight of the bogie itself. Weight, which is conducive to improving the traction efficiency of rail vehicles. Moreover, the connecting seat provides multiple interfaces for connecting components such as side beams, traction devices and secondary suspension devices. On the basis of satisfying the basic functions of the bogie, it simplifies the structure of the bogie and facilitates lightweight design.

When no driving device is installed on the bogie, the bogie is regarded as a non-power bogie. When the driving device is set on the bogie, the bogie is used as a power bogie. Fig. 3 is a schematic structural diagram of the power bogie provided by the embodiment of the present application, and Fig. 4 is a top view of the power bogie provided by the embodiment of the present application. As shown in FIG. 3 and FIG. 4 , the driving device 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 casing. The connection base 2 also provides a connection interface with the direct drive motor 71 , and the shell of the direct drive motor 71 is connected to the connection base 2 through a motor balance bar 72 . In addition, the shell of the direct drive motor 71 is fixed to the axle box 33 through the motor end cover.

The direct drive motor 71 is used to directly drive the axle 31 to rotate, which saves the gear reducer in the traditional bogie, further simplifies the structure of the bogie, and reduces the weight of the bogie.

Further, the bogie also includes a braking device 8 for braking the wheels 32 . In this embodiment, the brake device 8 adopts a brake caliper and is fixed to the connection base 2 . During braking, the brake caliper clamps the disc surfaces on both sides of the wheel 32 for braking.

Based on the above design ideas, this embodiment provides a specific implementation of the bogie:

Fig. 5 is a schematic structural diagram of the connecting seat in the bogie provided by the embodiment of the present application. As shown in FIG. 5 , the top of the connection seat 2 is recessed downward to form a first side beam installation groove 21 , and the first side beam installation groove 21 extends longitudinally. The middle part of the side beam 1 is accommodated in the first side beam installation groove 21 , and the depth of the first side beam installation groove 21 is smaller than the thickness of the middle part of the side beam 1 . The first side beam installation slot 21 is used to limit the lateral displacement of the side beam 1 .

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

One implementation method is as follows: the fixing seat 22 is straddled above the side beam 1 , and the two lateral ends of the fixing seat 22 extend downward from both sides of the side beam 1 . The fixing seat 22 is used to limit the vertical displacement of the side beam 1 .

Specifically, the fixing seat 22 includes: a fixed top plate, a fixed side plate and fixed bolts. Wherein, the fixed top plate extends along a direction parallel to the side beam 1 , the fixed side plates are vertically arranged at both lateral ends of the fixed top plate, and the fixed side plates extend downward. The fixed side plate and the fixed top plate can be of an integrated structure, and a groove that can accommodate the side beam is formed between the fixed top plate and the fixed side plate. The fixed top plate is roughly rectangular, and its four top corners are made with circular arc transitions. Vertical bolt holes are provided at 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 are connected to the connection seat 2 after passing through the bolt holes provided on the fixed top plate and the fixed side plate in sequence.

In this embodiment, the upper side sill plate 11 and the lower side sill plate 12 can be made of composite fibers, such as carbon fiber materials, which have certain flexible deformation capabilities. The connection base 2 is made of rigid material with certain strength, and provides interfaces for other components. The fixing seat 22 can also be made of rigid material.

When the side beam is made of carbon fiber material, further, the first upper lining 222 is arranged between the fixed top plate and the side beam 1 to protect the side beam 1 and prevent the side beam 1 from being longer than the fixed seat 22. Wear occurs after time contact. In addition, the first lower liner 223 is arranged between the first side sill installation groove 21 and the middle part of the side sill 1 to protect the side sill 1 and prevent the side sill from being worn out after long-term contact with the connecting seat 3 .

The first lower lining part 223 includes: a first lower substrate board and a first lower lining side board. The first lower base board is arranged parallel to the bottom surface of the first side beam installation groove 21 . The two first lower lining side panels are respectively erected on the lateral two edges of the first lower substrate panel. The height of the first lower lining side plate is greater than the depth of the first side beam installation groove 21 , so that the top end of the first lower lining side plate extends upwards to cover the side of the lower side beam plate 12 to protect it.

The first upper lining 222 includes: a first upper substrate plate and a first upper lining side plate. The first upper substrate board is arranged parallel to the lower surface of the fixed top board, and the two first upper lining side boards are respectively erected on two lateral edges of the first upper substrate board. The first upper liner is located in the groove of the fixed seat 22, and the height of the first upper liner side plate is greater than the height of the fixed side plate or the same as the height of the fixed side plate, so that the first upper liner side plate extends downward to the package. Cover the sides of the side sill panels 11 to protect them.

When the upper side sill 11 and the lower side sill 12 are made of carbon fiber material, under different loads from the vehicle body, the upper side sill 11 and the lower side sill 12 themselves deform, and the vertical load can be adjusted and buffer. Specifically, FIG. 8 is a schematic diagram of a side beam of a bogie subjected to a first vertical load provided by an embodiment of the present application, and FIG. 9 is a schematic diagram of a side beam of a bogie provided by an embodiment of the present application subjected to a second vertical load. Assume that the first vertical load is less than the second vertical load.

As shown in FIG. 8, when the side beam 1 is subjected to a small first vertical load, for example: 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 small deformation surfaces, The side sill gap 13 between the ends of the two is relatively large. At this time, the support stiffness is provided solely by the upper side sill plate 11 .

As shown in Figure 9, when the side sill 1 is subjected to a relatively large second vertical load, for example: the vehicle is in a fully loaded state, the upper side sill 11 and the lower side sill 12 provide support stiffness at the same time, and the lower side sill 12 produces Larger deformation causes the ends of the upper side sill plate 11 and the lower side sill plate 12 to contact. The supporting stiffness provided by the upper side sill plate 11 and the lower side sill plate 12 at the same time is greater than that provided by the upper side sill plate 11 alone.

The above-mentioned double-layer side beam structure realizes multi-stage buffering, which can be used as a three-series suspension device to buffer vertical loads, further reducing the vibration of the car body and improving ride comfort.

On the basis of the above-mentioned technical solution, this embodiment describes in detail the implementation of the wheel set and the assembly method between the wheel set, the side beam and the connecting seat:

Fig. 10 is a schematic structural diagram of a wheel set in a bogie provided by an embodiment of the present application. As shown in FIG. 10 , the wheel set includes an axle 31 , wheels 32 and axle boxes 33 . The top surface of the axle box 33 is a plane, and a series of positioning holes 331 are provided in the middle for assembling with a series of suspension devices 5 .

Fig. 11 is a schematic structural diagram of a series of suspension devices in the bogie provided by the embodiment of the present application. As shown in FIG. 11 , the primary suspension device 5 includes: an elastic buffer portion 51 and a side beam installation portion 52 . The elastic buffer portion 51 includes rigid metal layers and buffer rubber layers stacked and alternately arranged, and the thickness of a single buffer rubber layer is greater than that of a single rigid metal layer. The lowermost layer is a rigid metal layer, and its bottom surface is provided with positioning pins, which can be inserted into a series of positioning holes 331 on the top surface of the axle box 33 for positioning, and are used to limit the horizontal displacement of the primary suspension.

Both the rigid metal layer and the cushioning rubber layer have a structure with a high middle and low ends, with relatively large lateral rigidity, so that the lateral force between the wheel set and the side beam 1 can be completely borne by the primary suspension device 5, preventing the side beam 1 from bearing the lateral force , in order to adapt to the poor bonding force between the layers of the carbon fiber side sill plate, which is not conducive to bearing the characteristics of lateral force.

The side beam installation part 52 is made of rigid metal, and the side beam installation part 52 is arranged on the top of the elastic buffer part 51 , and the top of the side beam installation part 52 is assembled with the side beam 1 . The side beam installation part 52 is formed into an integral structure with each metal layer and buffer rubber layer through a vulcanization process.

One way of implementation: the top of the side beam installation part 52 is provided with a second side beam installation groove 521 extending along the longitudinal direction, and the end of the side beam 1 is accommodated in the second side beam installation groove 521 . The depth of the second side beam installation groove 521 is smaller than the thickness of the end portion of the side beam 1 . The second side beam installation groove 521 is used to limit the lateral displacement of the side beam 1 .

Further, as shown in Figures 1 to 4, a safety stopper 53 is used to straddle above the end of the side beam 1. Suspension device 5 is connected. The safety stopper 53 is made of rigid material, on the one hand, it can limit the lateral displacement of the side beam 1, and on the other hand, it can also bear the weight of the car body when the side beam 1 fails, so as to avoid the overall failure of the bogie and improve safety.

Specifically, when the side beam 1 is made of carbon fiber material, there is a certain gap between the safety stopper 53 and the vehicle body during normal running of the vehicle. When the side beam 1 breaks or fails due to deformation under certain limit conditions, the car body drops to touch the safety stop 53, and the safety stop 53 above the four axle boxes supports the car body to ensure that the bogie can run at a low speed to Station or vehicle maintenance area to ensure the safety of people in the vehicle.

For the double-layer side beams shown in Figures 1 to 4, this embodiment provides a specific implementation of the safety stop 53: Figure 12 is a schematic structural diagram of the assembly of the safety stop in the bogie provided by the embodiment of the application, Figure 13 is a sectional view of the safety stop assembly in the bogie provided by the embodiment of the present application, and FIG. 14 is an exploded view of the safety stop assembly in the bogie provided by the embodiment of the present application. As shown in FIGS. 12 to 14 , the ends of the upper side sill plate 11 and the lower side sill plate 12 extend above the primary suspension device 5 .

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

The first stop frame 531 and the second stop frame 532 are fixedly connected with the primary suspension device 5 . A specific implementation manner: a vertical safety stop installation hole 522 is provided on the top of the side beam installation portion 52, and the safety stop installation hole 522 is a threaded hole. Correspondingly, bolt holes are provided in the first stop frame 531 and the second stop frame 532, and the stop connecting bolts 533 are used to pass through the bolt holes on the second stop frame 532 and the first stop frame 531 downwards and then penetrate The safety stop mounting hole 522 is fixed.

A specific implementation manner of the second stop frame 532 is: including a stop top plate and a stop leg. The stop top plate is provided with bolt holes. The stop legs are vertically arranged on the lower surface of the stop top plate; the number of stop legs is multiple, and they are symmetrically arranged on both sides of the upper side beam plate. The top of the stop leg is connected with the stop top plate, and the bottom end is in contact with the first stop frame 531 , and the stop leg is provided with a bolt hole through up and down. The stop connecting bolts pass through the bolt holes of the stop top plate and the bolt holes of the stop legs in turn to be connected to the primary suspension device 5 . In the present embodiment, the number of stop legs is four, which are arranged at the four corners of the stop top plate.

The first stop frame 531 is attached to the lower side sill 12 , and there are at least two first stop frames 531 arranged at intervals along the longitudinal direction. There is a certain distance between the stop top plate in the second stop frame 532 and the upper side beam plate 11 .

Further, when the side beam 1 is made of composite fiber materials such as carbon fiber, the second lower liner 54 is arranged between the second side beam installation groove 521 and the end of the side beam 1 to carry out the side beam 1 protection to avoid abrasion of the side member 1. The second lower lining includes: a second lower substrate plate and two second lower lining side plates. The second lower base plate is arranged parallel to the bottom surface of the second side beam installation groove 521 . Two second lower lining side plates are erected on the lateral two edges of the second lower base plate, and the height of the second lower lining side plate is greater than or equal to the depth of the second side beam installation groove 521 , so that the second lower lining side plate covers both sides of the side beam 1 .

Further, the hoisting parts 55 are used to install on the primary suspension device 5 and the axle box 33 for overall hoisting of the bogie. Specifically, as shown in FIG. 1 , the top of the lifting member 55 is fixed to the side beam installation portion 52 . For example, threaded holes may be provided on the longitudinal end surface of the side beam installation portion 52 , and the lifting member 55 is fixed to the longitudinal end surface of the side beam installation portion 52 by bolts.

As shown in FIGS. 10 , 12 , and 14 , the top of the axle box 33 extends toward the longitudinal direction to form a lifting edge 332 , and the lifting edge 332 is provided with a lifting notch 333 . The lower part of the lifting part 55 is accommodated in the lifting notch 333, and the bottom end of the lifting part 55 has a lifting stop arm with a size larger than the lifting notch 333, and the lifting stop arm extends along the lateral direction.

Further, the bogie also includes a secondary suspension device 6 , which is arranged on the connection base 2 and located outside the side beam 1 . The secondary suspension device 6 is used to support the vehicle body and buffer the vertical force between the vehicle body and the bogie. In a traditional bogie, the secondary suspension device 6 is usually arranged on the top of the side beam or on the top of the corbel. The difference from the traditional bogie is that in the bogie proposed by this application, the secondary suspension device 6 is arranged on the connecting seat 2 and has no direct connection with the side beam 1 .

For the secondary suspension device 6, this embodiment provides an implementation method:

Figure 15 is a sectional view of the assembly of the secondary suspension device and the connecting seat in the bogie provided by the embodiment of the present application, and Figure 16 is a structural diagram of the assembly of the secondary suspension device and the connecting seat in the bogie provided by the embodiment of the present application. As shown in Figures 5, 15 and 16, the secondary suspension device 6 can be a rubber pile or an air spring. A secondary positioning pin 61 is arranged at the bottom of the secondary suspension device 6 .

Correspondingly, a secondary installation seat 23 is arranged on the top of the connection base 2 for assembling the secondary suspension device 6 . Specifically, the first side beam mounting groove 21 is provided at the middle position 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, and the secondary mounting base 23 is provided with a secondary positioning hole 231, The secondary positioning pin 61 is inserted into the secondary positioning hole 231 for limiting the horizontal displacement of the secondary suspension device 6 .

For the assembly method of the braking device 8, this embodiment also provides an implementation method:

Fig. 17 is a structural schematic diagram of the assembly of the braking device and the connecting seat in the bogie provided by the embodiment of the present application. As shown in FIG. 5 and FIG. 17 , brake hangers 24 are respectively provided at both longitudinal ends of the secondary mounting base 23 , and vertically extending hanger installation holes 241 are provided on the brake hangers 24 . In this embodiment, a brake caliper is used as the braking device, and the brake caliper is fixed through a bolt through the mounting hole 241 of the hanger. Two brake hangers 24 are arranged on one connecting seat 2, and four brake clamps are arranged on the bogie to brake four wheels.

Figure 18 is a schematic structural diagram of the bogie axle box connected to the connecting seat provided by the embodiment of the present application through a single tie rod, and Figure 19 is an exploded view of the bogie axle box connected to the connecting seat provided by the embodiment of the present application through a single tie rod. As shown in FIG. 18 and FIG. 19 , a single tie rod 34 is used to connect between the connection base 2 and the axle box 33 for transmitting longitudinal force.

Specifically, as shown in FIGS. 10 , 12 , 14 , and 19 , a tie rod connection seat 334 is provided on the longitudinal end surface of the axle box 33 , and the tie rod connection seat 334 is provided with a bolt hole. The number of tie rod connecting seats 334 is two, and a space is reserved between the two to accommodate the end of a single tie rod 34 .

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

The single tie rod 34 extends along the longitudinal direction, and its two ends are provided with mounting holes for accommodating the elastic nodes 341 . It has a larger mounting hole size on one end and a smaller mounting hole size on the other end. The elastic nodes 341 are press-fitted in the mounting holes. Elastic node 341 is formed by vulcanization of outer layer metal and inner layer rubber, has certain intensity and has certain cushioning capacity. Both ends of the elastic node 341 are provided with connecting protrusions, and bolt holes are provided on it, and the connecting protrusions of the elastic nodes are connected with the tie rod connecting seat 334 on the axle box 33 and the tie rod on the connecting seat 2 through the bolts respectively. The mounting side walls 25 are connected together.

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

Fig. 20 is a schematic structural view of the connection between the traction device and the connection seat in the bogie provided by the embodiment of the present application, and Fig. 21 is an exploded view of the connection between the traction device and the connection seat in the bogie provided by the embodiment of the present application.

As shown in FIG. 20 and FIG. 21 , the traction device 4 includes: a traction beam 41 , a traction pin 42 , a longitudinal stop assembly 43 and a transverse stop assembly 44 . Wherein, there are two traction beams 41 arranged side by side with an accommodation space between them. The traction beam 41 extends along the transverse direction and is connected between the two connection seats 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 to connect with the vehicle body. The traction pin 42 is used to transmit traction force and braking force between the vehicle body and the bogie.

There are two longitudinal stop assemblies 43, which are respectively arranged between the traction pin 42 and the traction beam 41, and are used to buffer the longitudinal force between the traction pin 42 and the traction force 41, and avoid rigid collision between the two.

There are two lateral stop assemblies 44, which are respectively arranged between the traction pin 42 and the connecting seat 2, and are used to limit excessive lateral displacement between the car body and the bogie. The lateral stop assembly 44 can be installed on the connection seat 2 specifically. When the vehicle is running straight, there is a certain gap between the lateral stop assembly 44 and the traction pin 42; Lateral stop assembly 44 on one side contacts.

This embodiment provides a specific implementation manner: a side of the connection base 2 facing the draw beam 41 is provided with a first draw beam interface and a second draw beam interface. One end of the draw beam 41 is connected to one connection base 2 through the first draw beam interface, and is connected to the other connection base 2 through the second connection interface.

As shown in FIG. 5 , the first traction beam interface is a first connection part 261 provided on the connection base 2, and the first connection part 261 is provided with a first central hole 2611 and a plurality of first central holes 2611 around the first central hole 2611. Bolt holes 2612.

As shown in FIG. 21 , the traction beam 41 includes: a beam body 411 , a first connecting plate 412 and a first connecting bolt 413 . Wherein, one end of the beam body 411 is provided with a first accommodating cavity. One side of the first connection plate 412 is provided with a first inner boss capable of being compressed into the first receiving cavity, and the other side is provided with a first outer boss capable of being accommodated in the first central hole 2611 . The first connecting plate 412 is also provided with a plurality of bolt holes surrounding the first inner boss. The first connecting bolts 413 pass through the bolt holes on the first connecting plate 412 and the first bolt holes 2612 on the first connecting portion 216 in order to be fixed.

As shown in FIG. 5 , the second traction beam interface is a second connection portion 262 provided on the connection base 2 . The second connecting portion 262 defines a second central hole 2621 and a plurality of second bolt holes 2622 disposed around the second central hole 2621 .

As shown in FIG. 21 , the other end of the beam body 411 is provided with a second accommodating 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, one end of the connecting pin 414 facing the drawing beam 41 is provided with a second inner boss that can be pressed against the second accommodating cavity, and the connecting pin 414 is also provided with a plurality of bolt holes arranged around the second inner boss. The pin 414 is inserted into the second central hole 2621 toward one end of the connecting base 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 vulcanized by outer metal and inner rubber, and has a certain buffer capacity.

The connecting flange 416 is located on the side of the second connecting portion 262 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 connecting pin in sequence. 414 bolt holes for connection. Further, the connecting flange 416 is a square flange.

In the above solution, the beam body 411 in the traction beam 41 may specifically be a cylindrical structure with a hollow interior.

The above-mentioned longitudinal stop assembly 43 includes: an inner fixing part 431 , a longitudinal stop part 432 and an outer fixing part 433 . Wherein, the inner fixing member 431 has a circular arc surface conforming to the drawing beam 41 , and the inner fixing member surrounds the inner side of the drawing beam. The outer fixing part 433 has a circular arc surface conforming to the shape of the drawing beam 41 , and the outer fixing part 433 surrounds the outside of the drawing beam 41 . The longitudinal stopper 432 is located between the inner fixing member 431 and the traction pin 42 . Bolts are used to connect the outer fixing piece, the inner fixing piece and the longitudinal stop piece together from the upper and lower sides of the draw beam 41 .

As shown in FIG. 5 , a transverse stopper 27 is provided on the end surface of the connection base 2 facing the drawbeam 41 , and the transverse stopper 27 is located between the first drawbeam interface and the second drawbeam interface. The transverse stopper assembly 44 includes: a transverse mounting piece and a transverse stopper. Wherein, the transverse mounting part is connected to the transverse stop part 27 by bolts, and the transverse stopper is fixed on a side of the transverse mounting part facing the traction pin 42 . There is a transverse stop distance between the transverse stopper and the traction pin 42 .

Figure 22 is a schematic structural view of the traction pin in the bogie provided by the embodiment of the present application, Figure 23 is a side view of the traction pin in the bogie provided by the embodiment of the present application, and Figure 24 is a lateral view of the traction pin in the bogie provided by the embodiment of the present application Schematic diagram of the vibrator assembly. As shown in FIGS. 22 to 24 , a vehicle body connection portion 421 is provided at the top of the traction pin 42 , and a bolt hole is provided on the vehicle body connection portion 421 to be connected to the bottom end of the vehicle body by bolts. The bottom end of the traction pin 42 is provided with a lifting arm 422, and the lifting arm 422 extends along the longitudinal direction. The number of lifting arms 422 is two, which extend out in opposite directions respectively. The lifting arm 422 is used for hoisting the bogie.

A shock absorber assembly space 4221 for inserting the transverse shock absorber 92 remains between the two lifting walls 422 . A shock absorber installation hole 4222 is provided on the lifting wall 422 . One end of the transverse shock absorber 92 is installed to the shock absorber installation hole 4222 through an elastic node, and the other end is connected to the shock absorber interface provided at the bottom of the connecting base 2 through an elastic node. The lateral shock absorber 92 is used for buffering the lateral force between the traction pin 42 and the connecting seat 2 .

For the above-mentioned driving device, this embodiment also provides an implementation method:

Fig. 25 is a structural schematic diagram of the assembly of the driving device and the connecting seat in the bogie provided by the embodiment of the present application, and Fig. 26 is a top view of the assembly of the driving device and the connecting seat in the bogie provided by the embodiment of the present application. As shown in FIGS. 25 and 26 , one end of the motor balance bar 72 is connected to the shell of the direct drive motor 71 through an elastic node. The other end of the motor balance bar 72 is branched into two connection ends, and each connection end is connected to the connection base 2 through an elastic node.

Specifically, as shown in FIG. 5 , a motor connection portion 28 is provided at the inner end of the top of the connection base 2 . There are two motor connecting parts 28 , and there is a space between the two to accommodate the end of the motor balance bar 72 . Bolt holes are provided on the motor connecting portion 28 , and are connected to elastic nodes on the motor balance bar 72 through bolts.

Further, the bogie also includes: a vertical shock absorber, an anti-snake shock absorber and an anti-roll torsion bar. This embodiment also provides specific implementations:

As shown in FIG. 20 , the shock absorber integration seat 91 is used to connect to the outer end of the connection seat 2 . The shock absorber integrated seat 91 can use 3D printing technology to form a skeleton structure, which can reduce weight in addition to having basic support functions. The above-mentioned vertical shock absorber, anti-snaking shock absorber and anti-rolling torsion bar can all be installed on the shock absorber integration seat 91 .

Fig. 20 shows that one end of the anti-snaking shock absorber 93 is connected to the shock absorber assembly seat 91, the anti-snaking shock absorber 93 extends along the longitudinal direction, and the other end thereof is connected to the vehicle body. The anti-snaking shock absorber 93 is used on a faster vehicle to slow down the snaking motion of the vehicle.

As shown in FIG. 1 , the vertical shock absorber 94 extends vertically, its bottom end is connected to the shock absorber assembly seat 91 , and its top end is connected to the vehicle body. The vertical shock absorber 94 is used to slow down the vertical force between the bogie and the vehicle body.

The anti-rolling torsion bar 95 is connected to the shock absorber assembly seat 91 and includes a laterally extending portion and a vertically extending portion, wherein the top of the vertically extending portion is in contact with the vehicle body. The anti-roll torsion bar 95 is used to avoid excessive inclination of the vehicle body, thereby improving comfort and avoiding vehicle rollover accidents.

This embodiment provides a rail vehicle, which adopts the above-mentioned bogie. The rail vehicle can be a diesel locomotive or an electric locomotive, and can be an EMU, subway, light rail or tram. The rail vehicle provided by this embodiment has the same technical effect as the above bogie.

Claims (10)

A double-deck side beam bogie is characterized in that it comprises: Two side sills arranged side by side, the side sills include an upper side sill and a lower side sill stacked, the upper side sill is in contact with the middle of the lower side sill, and there is a gap between the ends; Two connecting seats; one connecting seat is set under the middle part of a side beam; the two connecting seats are connected by a traction device; Two wheel sets are respectively arranged under the ends of the side beams; the wheel sets include axles, wheels and axle boxes symmetrically arranged on the axles; A primary suspension device is provided between each axle box and the end of the side member. The bogie according to claim 1, further comprising: a driving device for driving the axle to rotate; The drive device includes: a direct drive motor and a motor balance bar, the rotor of the direct drive motor is connected to the axle, the shell of the direct drive motor is connected to the connecting seat through the motor balance bar, and the shell of the direct drive motor is connected to the axle box through the motor end cover fixed. The bogie according to claim 1 or 2, wherein the top of the connecting seat is provided with a first side beam installation groove extending in the longitudinal direction, and the middle part of the side beam is accommodated in the first side beam In the installation groove; the depth of the first side beam installation groove is less than the thickness of the middle part of the lower side beam plate. The bogie according to claim 3, characterized in that, the longitudinal ends of the connecting seats are respectively provided with single tie rod installation parts; The bogie also includes: A single tie rod; the single tie rod extends along the longitudinal direction, one end of the single tie rod is connected to the single tie rod installation part on the connecting seat through an elastic node, and the other end is connected to the axle box through an elastic node. The bogie according to claim 3, wherein the side beam is made of composite fiber material; the bogie also includes: a first lower lining, which is arranged in the first side beam installation groove and the middle part of the side beam between; The first lower lining includes: The first lower substrate plate is arranged parallel to the bottom surface of the first side beam installation groove; The two first lower lining side plates are erected on the lateral two edges of the first lower substrate plate; the height of the first lower lining side plates is greater than the depth of the first side beam installation groove. The bogie according to claim 1 or 2, wherein the primary suspension device comprises: An elastic buffer; the elastic buffer includes: stacked and alternately arranged rigid metal layers and buffer rubber layers; The side beam installation part is made of rigid metal; the side beam installation part is arranged on the top of the elastic buffer part; the top of the side beam installation part is assembled with the side beam; The mounting part of the side beam is formed into an integrated structure with each metal layer and buffer rubber layer through a vulcanization process. The bogie according to claim 6, wherein the top of the side beam installation part is provided with a second side beam installation groove extending in the longitudinal direction, and the end of the side beam is accommodated in the second side In the beam installation groove; the depth of the second side beam installation groove is less than the thickness of the end of the side beam. The bogie according to claim 7, wherein the upper side sill and the lower side sill are made of composite fiber materials; the bogie further comprises: a second lower lining arranged on the second side Between the beam installation groove and the end of the lower side beam plate; The second lower lining includes: The second lower substrate plate is arranged parallel to the bottom surface of the second side beam installation groove; Two second lower lining side panels are erected on the two lateral edges of the second lower substrate panel; the height of the second lower lining side panels is greater than the depth of the second side beam installation groove or the depth of the second side beam installation groove same. The bogie according to claim 6, further comprising: The top of the lifting part is fixed to the side beam installation part; the top of the axle box extends toward the longitudinal direction to form a lifting edge, and the lifting edge is provided with a lifting notch; the lower part of the lifting part is accommodated in the lifting notch, and the lifting The bottom end of the hanger has a lift stop arm whose size is larger than the lift notch. A rail vehicle, characterized by comprising: the bogie according to any one of claims 1-9.

Images