CN209921301U

CN209921301U - Bogie and have its rail vehicle

Info

Publication number: CN209921301U
Application number: CN201920355609.9U
Authority: CN
Inventors: 王石; 闫转芳; 张雄飞; 周平宇; 赵伟
Original assignee: CRRC Qingdao Sifang Co Ltd
Current assignee: CRRC Qingdao Sifang Co Ltd
Priority date: 2019-03-19
Filing date: 2019-03-19
Publication date: 2020-01-10
Anticipated expiration: 2029-03-19

Abstract

The utility model provides a bogie and have its rail vehicle. The bogie is used for hanging the motor, and the bogie includes: the middle part of the cross beam is provided with a first suspension part; the side beam is connected with the cross beam, and at least one end of the side beam is provided with a second suspension part and a third suspension part; wherein, the motor is hung to establish to the bogie on through first linkage, second linkage and third linkage. Use the technical scheme of the utility model, can solve among the prior art the relatively poor problem of stability that the motor hangs under the bogie.

Description

Bogie and have its rail vehicle

Technical Field

The utility model relates to a rail vehicle technical field particularly, relates to a bogie and have its rail vehicle.

Background

With the increase of the running speed of the train, the frequency range of the disturbance of the train by the line is wider. The problem of dynamic characteristics of lightweight load-bearing structures is increasingly becoming more pronounced during vehicle operation.

The motor is usually hung below a bogie of the railway vehicle, the motor in the prior art is connected with a cross beam of the bogie, and the strength and the rigidity of a bogie system are certain, so that the motor hanging mode has high requirements on the weight and the hanging height of the motor, the stability of the suspended motor is poor, and the light-weight bearing requirement of the vehicle cannot be met.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a main aim at provides a bogie and have its rail vehicle to solve among the prior art the relatively poor problem of stability that the motor hung under the bogie.

In order to achieve the above object, according to an aspect of the present invention, there is provided a bogie for suspending a motor, the bogie comprising: the middle part of the cross beam is provided with a first suspension part; the side beam is connected with the cross beam, and at least one end of the side beam is provided with a second suspension part and a third suspension part; wherein, the motor is hung to establish to the bogie on through first linkage, second linkage and third linkage.

Furthermore, the cross beams comprise a first cross beam and a second cross beam which are arranged at intervals, the side beams comprise a first side beam and a second side beam which are arranged at intervals; the first cross beam and the first side beam are integrally formed to form a first T-shaped framework, the second cross beam and the second side beam are integrally formed to form a second T-shaped framework, and the first T-shaped framework and the second T-shaped framework are connected through the hinged joint to form a bogie.

Furthermore, the bogie comprises a plurality of hinged nodes, a first mounting shaft is arranged at one end, facing the second side beam, of the first cross beam, a first mounting hole is formed in the corresponding position of the second side beam, the first mounting shaft is inserted into the first mounting hole, and one of the hinged nodes is located between the outer wall surface of the first mounting shaft and the inner wall surface of the first mounting hole, so that the first cross beam and the second side beam are reliably connected.

Furthermore, the bogie comprises a plurality of hinged nodes, a second mounting shaft is arranged at one end, facing the first side beam, of the second cross beam, a second mounting hole is formed in the corresponding position of the first side beam, the second mounting shaft is inserted into the second mounting hole, and one of the hinged nodes is located between the outer wall surface of the second mounting shaft and the inner wall surface of the second mounting hole, so that the second cross beam and the first side beam are reliably connected.

Further, the hinge joint comprises a first ring layer, a second ring layer and a third ring layer which are sequentially arranged, wherein the first ring layer and the third ring layer are made of rigid materials, and the second ring layer is made of rubber materials.

Further, the first suspension portion includes two suspension structures, one of which is provided on the first cross member and the other of which is provided on the second cross member.

Furthermore, two ends of the first side beam are provided with second suspension parts, two ends of the second side beam are provided with third suspension parts, and the bogie is provided with two motors; the second suspension part and the third suspension part which are positioned on the same side of the first beam and the suspension structure on the first beam are used for suspending one of the two motors, and the second suspension part and the third suspension part which are positioned on the same side of the second beam and the suspension structure on the second beam are used for suspending the other of the two motors.

Furthermore, a first mounting seat is arranged on one side, close to the first cross beam, of the second cross beam.

Further, a second mounting seat is arranged on one side, far away from the first side beam, of the second side beam.

Further, the bogie is a permanent magnet direct-drive bogie.

According to another aspect of the present invention, there is provided a rail vehicle, comprising a bogie and a carriage located on the bogie, the bogie being the bogie as described above.

Use the technical scheme of the utility model, because first portion, the second portion and the third portion of hanging hang the motor jointly to the bogie on to realized the three-point fixation to the motor, and then ensured the stability that the motor hung. For among the prior art the motor only with the crossbeam be connected the term, the connected mode in this application reduces the weight requirement of hanging the motor, hangs height-adjustable to hang stability and improve. Therefore, through the arrangement, the stable suspension of the motor on the bogie is realized, and the reliability of the motor suspension is increased.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

figure 1 shows a schematic structural view of a bogie and motor matched embodiment of a railway vehicle according to the utility model

FIG. 2 shows a schematic structural view of the truck of FIG. 1;

FIG. 3 shows a cross-sectional view A-A of the truck of FIG. 2;

FIG. 4 is an enlarged partial schematic view of the first connecting axle of the truck of FIG. 3 engaged with the articulation joint; and

fig. 5 shows a cross-sectional structural schematic of the articulation node of fig. 4.

Wherein the figures include the following reference numerals:

10. a cross beam; 11. a first cross member; 111. a first mounting shaft; 12. a second cross member; 20. a side beam; 21. a first side member; 22. a second side member; 30. a first hanging portion; 31. a second hanging portion; 32. a third hanging part; 40. a hinged joint; 41. a first loop layer; 42. a second loop layer; 43. a third loop layer; 50. a first mounting seat; 60. a second mounting seat; 70. an electric motor.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

As shown in fig. 1 and 2, the present embodiment provides a bogie for suspending a motor 70, which includes a cross member 10 and side members 20. The middle part of the beam 10 is provided with a first hanging part 30; the side beam 20 is connected with the cross beam 10, and at least one end of the side beam 20 is provided with a second hanging part 31 and a third hanging part 32; the motor 70 is suspended to the bogie by the first suspension unit 30, the second suspension unit, and the third suspension unit.

Specifically, since the first suspension portion 30, the second suspension portion 31, and the third suspension portion 32 together suspend the motor 70 to the bogie, three-point fixation of the motor 70 is achieved, and thus the suspension stability of the motor 70 is ensured. Compared with the prior art that the motor is only connected with the cross beam, the connection mode in the embodiment has the advantages that the requirement on the weight of the suspension motor is reduced, the suspension height is adjustable, and the suspension stability is improved. Therefore, by the arrangement, stable suspension of the motor 70 on the bogie is realized, and the reliability of suspension of the motor 70 is increased.

As shown in fig. 1 and fig. 2, in this embodiment, an operator can adjust the suspension height of the motor 70 according to the height requirement of the bottom of the bogie, so as to reduce the requirement of the bogie on the suspension height of the motor. In addition, the weight of the motor 70 can be effectively dispersed in a three-point suspension mode, and the requirement of the bogie on the weight of the motor 70 is reduced. Therefore, the above arrangement improves the stability of the suspension of the motor 70.

As shown in fig. 1 to 3, in the present embodiment, the cross member 10 includes a first cross member 11 and a second cross member 12, the first cross member 11 and the second cross member 12 are arranged at intervals, the side member 20 includes a first side member 21 and a second side member 22, and the first side member 21 and the second side member 22 are arranged at intervals; the first cross beam 11 and the first side beam 21 are integrally formed to form a first T-shaped framework, the second cross beam 12 and the second side beam 22 are integrally formed to form a second T-shaped framework, and the first T-shaped framework and the second T-shaped framework are connected through the hinge joint 40 to form the bogie.

The bogie is formed by hinging and connecting two integrally-formed T-shaped frameworks, and the arrangement ensures that the bogie has flexible connecting points to adapt to curves with relatively acute bending angles, improves the limit of the bogie for bearing twisting force, and reduces the design difficulty of the bogie. On the premise that the motor is suspended by the three suspension parts, the shock resistance between the bogie and the suspension device in the running process of the railway vehicle is improved.

As shown in fig. 3 and 4, in the present embodiment, the bogie includes a plurality of hinge nodes 40, one end of the first cross beam 11 facing the second side beam 22 is provided with a first mounting shaft 111, a corresponding position of the second side beam 22 is provided with a first mounting hole, the first mounting shaft 111 is inserted into the first mounting hole, and one of the plurality of hinge nodes 40 is located between an outer wall surface of the first mounting shaft 111 and an inner wall surface of the first mounting hole, so that the first cross beam 11 and the second side beam 22 are reliably connected.

In this embodiment, from the viewpoint of simplifying the torsional rigidity test and calculation method of the bogie system, the ratio of the oblique symmetric load to the vertical deformation of the bogie is defined as the structural torsional rigidity. By changing the physical properties of the materials, bogie models with different torsional rigidity characteristics are constructed, and the influence of the torsional rigidity on the dynamic behavior of a vehicle system is researched.

Analysis results show that the reduction of the torsional rigidity of the bogie can redistribute the vertical action of the bogie wheel rail, and the load uniformity of each wheel is improved. Thus, the magnitude of the vertical wheel rail force and the wheel weight load shedding ratio of the vehicle as it passes through the curve decreases with decreasing truck torsional stiffness. The reduction of the torsional stiffness of the bogie has little effect on the running stability and smoothness of the vehicle, the derailment coefficient when passing through a curve and the sum of the wheel track guiding force. The truck torsional stiffness should be chosen to be low in view of improving the running safety of the vehicle on a twisted line.

Specifically, after the hinge joint 40 is sleeved on the first mounting shaft 111, the first mounting shaft 111 is inserted into the first mounting hole, and under the action of the hinge joint 40, the rigidity of the bogie is integrated with the integral suspension parameters of the bogie, so that the integral dynamic performance of the bogie is improved.

As shown in fig. 3 and 4, in the present embodiment, the bogie includes a plurality of hinge nodes 40, one end of the second cross member 12 facing the first side member 21 is provided with a second mounting shaft, a corresponding position of the first side member 21 is provided with a second mounting hole, the second mounting shaft is inserted into the second mounting hole, and one of the plurality of hinge nodes 40 is located between an outer wall surface of the second mounting shaft and an inner wall surface of the second mounting hole, so that the second cross member 12 is reliably connected to the first side member 21.

Similarly, after the hinge joint 40 is sleeved on the second mounting shaft, the second mounting shaft is inserted into the first mounting hole, and under the action of the hinge joint 40, the rigidity of the bogie is integrated with the integral suspension parameter of the bogie, so that the integral dynamic performance of the bogie is improved

As shown in fig. 4 and 5, in the present embodiment, the hinge node 40 includes a first loop layer 41, a second loop layer 42, and a third loop layer 43, which are sequentially disposed, wherein the first loop layer 41 and the third loop layer 43 are made of a rigid material, and the second loop layer 42 is made of a rubber material.

In the production and the experiment of the railway vehicle, the bending and torsional rigidity characteristics of straight beams with different forms and equal sections are analyzed. The results show that the box beam has less torsional stiffness but greater bending stiffness than the tube section beam when the cross-sectional wall thickness and the area enclosed by the centerline of the wall thickness are the same. The calculation result based on the finite element method shows that the torsional rigidity of the bogie is influenced by the bending rigidity and the torsional rigidity of the cross beam. Under the condition of different wall thicknesses, the influence degrees of the bending rigidity and the torsional rigidity of the cross beam on the torsional rigidity of the bogie are different. The design of the torsional flexible bogie aims at reasonably coordinating different rigidity characteristics of the beam structure, and the torsional rigidity of the bogie structure is reduced by improving the flexibility level of the area.

In this embodiment, the hinge joint 40 is a rubber joint. Because second circle layer 42 is the rubber material, has improved mechanical properties on the basis of guaranteeing bogie structural strength.

As shown in fig. 1 and 2, in the present embodiment, the first hanging portion 30 includes two hanging structures, one of which is provided on the first cross member 11, and the other of which is provided on the second cross member 12.

Preferably, the two suspension structures are located in the middle of the first beam 11 and the second beam 12, respectively. The above arrangement further ensures the stability of the suspension of the motor 70.

As shown in fig. 1 and 2, in the present embodiment, the first side member 21 is provided at both ends thereof with the second hanging portions 31, the second side member 22 is provided at both ends thereof with the third hanging portions 32, and the bogie is provided with two motors 70; the second suspension portion 31 and the third suspension portion 32 located on the same side of the first beam 11 and the suspension structure on the first beam 11 are used for suspending one of the two motors 70, and the second suspension portion 31 and the third suspension portion 32 located on the same side of the second beam 12 and the suspension structure on the second beam 12 are used for suspending the other of the two motors 70.

Through the arrangement, the two motors 70 are suspended by the bogie, and the suspension stability of the two motors 70 is ensured.

As shown in fig. 1 and 2, in the present embodiment, a first mounting seat 50 is provided on a side of the second cross member 12 close to the first cross member 11.

Specifically, the first mount 50 is used to mount a traction rubber pile. The traction rubber pile in the prior art is arranged below the cross beam, and the traction rubber pile in the embodiment is arranged at the position opposite to the first cross beam 11 and the second cross beam 12, so that a traction pull rod is not required to be arranged, the installation of the traction rubber pile is simplified, and the structure of the whole bogie is more compact.

As shown in fig. 1 and 2, in the present embodiment, a second mount 60 is provided on a side of the second side member 22 remote from the first side member 21.

In this embodiment, the second mount 60 is used to mount an active radial device. The arrangement concentrates the active radial devices on the second side beam 22 of the bogie, making the overall bogie compact.

Preferably, the bogie is a permanent magnet direct drive bogie.

The embodiment also provides a railway vehicle, which comprises a bogie and a carriage positioned on the bogie, wherein the bogie is the bogie.

In the present embodiment, the first suspension portion 30, the second suspension portion 31, and the third suspension portion 32 jointly suspend the motor 70 to the bogie, so that three-point fixing of the motor 70 is achieved, and stability of the motor suspension is ensured. Compared with the prior art that the motor is only connected with the cross beam, the connection mode in the embodiment has the advantages that the requirement on the weight of the suspension motor is reduced, the suspension height is adjustable, and the suspension stability is improved.

Therefore, the rail vehicle having the bogie described above also has the advantages described above.

In the research of the railway vehicle, from the viewpoint of simplifying a bogie system torsional rigidity test and a calculation method, the ratio of the oblique symmetrical load to the bogie vertical deformation is defined as the structural torsional rigidity. By changing the physical properties of materials, bogie models with different torsional rigidity characteristics are constructed, and the influence of the torsional rigidity on the dynamic behavior of a vehicle system is researched. Analysis results show that the reduction of the torsional rigidity of the bogie can redistribute the vertical action of the bogie wheel rail, and the load uniformity of each wheel is improved. Thus, the magnitude of the vertical wheel rail force and the wheel weight load shedding ratio of the vehicle as it passes through the curve decreases with decreasing truck torsional stiffness. The reduction of the torsional stiffness of the bogie has little effect on the running stability and smoothness of the vehicle, the derailment coefficient when passing through a curve and the sum of the wheel track guiding force. The truck torsional stiffness should be chosen to be low in view of improving the running safety of the vehicle on a twisted line.

To overcome the disadvantages of the prior art methods, the fatigue strength of the bogie structure was evaluated using a material availability-based method (FKM method) recommended by the german mechanical engineering society. The influence of factors such as average stress and load spectrum characteristics on the fatigue strength of the bogie is discussed in combination with the manufacturing process and the service environment of the bogie welding bogie. According to a stress calculation method under a unit coordinate system, an analysis stress spectrum of weld toes of a web plate of a side beam of the bogie and a weld toe of a lower cover plate is determined, and the material utilization degree of the weld toes is calculated and compared with an evaluation result based on a traditional method. Under the framework of the traditional method, the quasi-static process of vehicle passing curve is a determining factor of structural fatigue strength, and the influence of the vertical dynamic process generated by the floating and sinking motion is small. The FKM method considers the influence of load cycle times in quasi-static and dynamic processes, and when the fatigue resistance characteristics of joints are consistent, the structural fatigue strength evaluation conclusion obtained based on the method is looser than that of the traditional method. The FKM method is adopted to evaluate the structural fatigue strength, and the structural lightweight design is facilitated.

In order to research the influence of rigidity characteristics on the structural fatigue strength, a bogie model of variable torsional rigidity is established, and the fatigue strength of the bogie is evaluated based on a test load spectrum recommended by the International railway Union UIC515-4 standard. Research results show that the deformation of the oblique symmetrical load sensitive area is increased due to the reduction of the torsional rigidity of the bogie, and the utilization rate of normal stress materials, the utilization rate of shear stress materials and the comprehensive utilization rate of materials in the area are all increased under higher stress level. The selection of joints with lower stress levels in the diagonally symmetric load sensitive area is the fundamental principle of the design of the strength of a torsionally flexible bogie.

The bending and torsional rigidity characteristics of straight beams with different forms and equal sections are analyzed. The results show that the box beam has less torsional stiffness but greater bending stiffness than the tube section beam when the cross-sectional wall thickness and the area enclosed by the centerline of the wall thickness are the same. The calculation result based on the finite element method shows that the torsional rigidity of the bogie is influenced by the bending rigidity and the torsional rigidity of the cross beam. Under the condition of different wall thicknesses, the influence degrees of the bending rigidity and the torsional rigidity of the cross beam on the torsional rigidity of the bogie are different. The design of the torsional flexible bogie aims at reasonably coordinating different rigidity characteristics of the beam structure, and the torsional rigidity of the bogie structure is reduced by improving the flexibility level of the area.

According to the research to flexible bogie, research and development an articulated formula flexible bogie suitable for permanent magnetism directly drives bogie, use neotype T style of calligraphy bogie to connect, link together through rubber articulated node, through structural strength emulation, bogie dynamics calculation result, discover this kind of bogie structure and optimized the whole dynamics performance of bogie by a wide margin, permanent magnetism has been accomplished on the basis of guaranteeing bogie structural strength and has directly driven the improvement of bogie dynamics performance, the development for the flexible bogie of later stage carbon fiber provides the guide material, and the design for follow-up flexible bogie provides the design blue book. Particularly, the reduction of the longitudinal rigidity of the bogie is beneficial to improving the curve passing capacity of the bogie and slowing down the lateral abrasion of the wheel track.

From the above description, it can be seen that the above-mentioned embodiments of the present invention achieve the following technical effects:

because first linkage, second linkage and third linkage hang the motor to the bogie jointly to three point fixation to the motor has been realized, and then ensured the stability that the motor hung. For among the prior art the motor only with the crossbeam be connected the term, the connected mode in this application reduces the weight requirement of hanging the motor, hangs height-adjustable to hang stability and improve. Therefore, through the arrangement, the stable suspension of the motor on the bogie is realized, and the reliability of the motor suspension is increased.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A bogie for suspending a motor (70), the bogie comprising:

the suspension device comprises a cross beam (10), wherein a first suspension part (30) is arranged in the middle of the cross beam (10);

a side member (20) connected to the cross member (10), at least one end of the side member (20) being provided with a second hanging portion (31) and a third hanging portion (32);

wherein the motor (70) is hung on the bogie through the first hanging part (30), the second hanging part (31) and the third hanging part (32).

2. The bogie according to claim 1, wherein the cross member (10) comprises a first cross member (11) and a second cross member (12), the first cross member (11) and the second cross member (12) being spaced apart, and the side member (20) comprises a first side member (21) and a second side member (22), the first side member (21) and the second side member (22) being spaced apart; the first cross beam (11) and the first side beam (21) are integrally formed to form a first T-shaped framework, the second cross beam (12) and the second side beam (22) are integrally formed to form a second T-shaped framework, and the first T-shaped framework and the second T-shaped framework are connected through a hinge joint (40) to form the bogie.

3. The bogie according to claim 2, wherein the bogie comprises a plurality of hinge nodes (40), wherein one end of the first cross beam (11) facing the second side beam (22) is provided with a first mounting shaft (111), a corresponding position of the second side beam (22) is provided with a first mounting hole, the first mounting shaft (111) is inserted into the first mounting hole, and one of the hinge nodes (40) is located between an outer wall surface of the first mounting shaft (111) and an inner wall surface of the first mounting hole, so that the first cross beam (11) and the second side beam (22) are reliably connected.

4. The bogie according to claim 2, wherein the bogie comprises a plurality of hinge nodes (40), wherein one end of the second cross beam (12) facing the first side beam (21) is provided with a second mounting shaft, a corresponding position of the first side beam (21) is provided with a second mounting hole, the second mounting shaft is inserted into the second mounting hole, and one of the hinge nodes (40) is located between an outer wall surface of the second mounting shaft and an inner wall surface of the second mounting hole, so that the second cross beam (12) and the first side beam (21) are reliably connected.

5. A bogie as claimed in claim 2, characterised in that the articulation joint (40) comprises a first hoop layer (41), a second hoop layer (42) and a third hoop layer (43) arranged in sequence, wherein the first hoop layer (41) and the third hoop layer (43) are made of a rigid material and the second hoop layer (42) is made of a rubber material.

6. A bogie as claimed in claim 2, characterised in that the first suspension portion (30) comprises two suspension structures, one of which is provided on the first beam (11) and the other of which is provided on the second beam (12).

7. The bogie according to claim 6, wherein both ends of the first side beam (21) are provided with second suspension parts (31), both ends of the second side beam (22) are provided with third suspension parts (32), and two motors (70) are arranged on the bogie; the second suspension part (31) and the third suspension part (32) which are positioned on the same side of the first beam (11) and a suspension structure on the first beam (11) are used for suspending one of the two motors (70), and the second suspension part (31) and the third suspension part (32) which are positioned on the same side of the second beam (12) and a suspension structure on the second beam (12) are used for suspending the other of the two motors (70).

8. A bogie as claimed in claim 2, characterised in that the side of the second beam (12) adjacent the first beam (11) is provided with a first mounting seat (50).

9. A bogie as claimed in claim 2, characterised in that the side of the second side beam (22) remote from the first side beam (21) is provided with a second mounting seat (60).

10. The bogie of any one of claims 1 to 9, wherein the bogie is a permanent magnet direct drive bogie.

11. A rail vehicle comprising a bogie and a car on the bogie, characterized in that the bogie is as claimed in any one of claims 1 to 10.