CN211943321U

CN211943321U - Secondary suspension device of railway vehicle

Info

Publication number: CN211943321U
Application number: CN202020238190.1U
Authority: CN
Inventors: 周张义; 劳良铖
Original assignee: Southwest Jiaotong University
Current assignee: Southwest Jiaotong University
Priority date: 2020-03-02
Filing date: 2020-03-02
Publication date: 2020-11-17
Anticipated expiration: 2030-03-02

Abstract

The utility model discloses a railway vehicle's secondary linkage device contains two spring assembly, two the spring assembly symmetry sets up, spring assembly contains at least one spring unit, spring unit contains coil spring one and coil spring two, coil spring one is located two outsides of coil spring, coil spring one highly be higher than coil spring two's height, rubber spring one, lower extreme connection rubber spring two are connected to coil spring one's upper end, the lower extreme of coil spring two is connected rubber spring two. The device can effectively reduce the working stress of the spiral spring and the horizontal rigidity value of the spring assembly, the horizontal rigidity of the spring assembly is convenient to adjust, the structural stability is good, the requirement of poor deflection of the empty and heavy truck of the truck can be met, overlarge torsional deformation is not easy to generate, the structure is simple, the cost is low, and the device can be widely applied to the truck bogie structure and is beneficial to improving the running speed of the truck.

Description

Secondary suspension device of railway vehicle

Technical Field

The utility model relates to a bogie technical field, in particular to railway vehicle's secondary suspension device.

Background

The secondary suspension device is positioned between the bogie frame and the bogie body, is widely applied to various vehicles such as railway freight cars, passenger cars, motor train units, subways and the like, and is mainly used for bearing the weight of the bogie body and transferring vertical loads and transverse loads. The running speed of the vehicle is closely related to the dynamic performance of the bogie, the vehicle needs to have small dead weight and low unsprung mass when accelerating, and the bogie of the inner axle box generally has the advantages of small dead weight and low unsprung mass. As a result, more and more inner axle box freight car trucks employ a two-wire suspension to improve the dynamics of the truck.

For a traditional outer axle box bogie, because the center distance of a journal is larger than the inner side distance of a wheel pair, one system can adopt a suspension device with smaller rigidity, but the center distance of the journal of the inner axle box bogie is smaller than the inner side distance of the wheel pair, and the other system adopts the suspension device with smaller rigidity value, the anti-overturning capability of the bogie is insufficient, so that the primary suspension of the inner axle box bogie is usually higher in rigidity, and a soft secondary suspension is needed to improve the overall vertical performance of the bogie. Although the existing air spring is small in vertical rigidity, the cost is high, the influence of temperature is large, the existing air spring is not suitable for the operation environment with severe conditions, and meanwhile, the rotation deformation of a vehicle body and a bogie can be increased due to the smaller curve radius, so that the air spring is excessively deformed, and the vehicle instability is caused.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome secondary suspension among the prior art and have vertical performance not good, if adopt current air spring, then the cost is higher, receives the temperature influence simultaneously big, is not suitable for the abominable operational environment of condition, causes the vehicle unstability easily, is difficult to satisfy freight train demand etc. the aforesaid not enough, provides a railway vehicle's secondary suspension.

In order to achieve the above object, the present invention provides the following technical solutions:

the utility model provides a railway vehicle's secondary suspension device, contains two spring group, two the spring group symmetry sets up, spring group contains at least one spring unit, spring unit contains coil spring one and coil spring two, coil spring one is located the two outsides of coil spring, coil spring one highly be higher than coil spring two's height, rubber spring one is connected to coil spring one's upper end, rubber spring two is connected to the lower extreme, the lower extreme of coil spring two is connected rubber spring two.

Adopt a railway vehicle's secondary linkage, adopt even number spring unit to form the combination, every spring unit adopts two-stage coil spring and the form of both ends series connection rubber spring, because coil spring's horizontal rigidity is great one both ends are established ties respectively rubber spring one and rubber spring two can fully utilize the little characteristics of rubber spring horizontal rigidity, effectively reduce coil spring's working stress with spring unit's horizontal direction rigidity value, spring unit's horizontal rigidity value can be adjusted through the number of piles and the rigidity of adjusting both ends rubber spring, and it is convenient to adjust, and structural stability is good, and the unequal coil spring of inside and outside two-stage height that sets up can satisfy the requirement of freight train empty weight car amount of deflection difference, and is difficult for producing too big torsional deformation. The device can effectively reduce the horizontal rigidity of the secondary spring, is favorable for improving the running speed of a vehicle, has simple structure and low cost, can be widely applied to the structure of the truck bogie, and is favorable for improving the running speed of the truck.

Preferably, the stiffness of the first coil spring is smaller than the stiffness of the second coil spring.

Preferably, the first coil spring has a coil direction opposite to that of the second coil spring.

Preferably, the first rubber spring is provided with a first limiting ring at the bottom, the second rubber spring is provided with a second limiting ring at the top, and two ends of the first spiral spring are respectively clamped with the first limiting ring and the second limiting ring.

Further preferably, a bump is arranged at the top of the second rubber spring, and the second spiral spring is clamped on the bump.

Preferably, the spring group is arranged in the middle of the framework.

Further preferably, the frame includes a side member and a cross member, and the spring is assembled to the cross member.

Further preferably, each of the spring sets comprises two spring assemblies.

Four spring assemblies are arranged on the cross beam in the middle of the two side beams of the framework in a concentrated mode, and therefore the transverse size of the bogie is effectively reduced. When a vehicle passes through a curve, the vehicle body and the bogie can rotate relatively, and the torsional deformation of the spiral spring can be further reduced by adopting the arrangement mode, so that the stress of the spiral spring is better, and the spiral spring is effectively protected.

Preferably, the vibration absorber further comprises a transverse vibration absorber, a vertical vibration absorber, an anti-rolling torsion bar, an anti-snaking vibration absorber, a transverse stop and a vertical stop.

Preferably, the top surface of the first rubber spring and the bottom surface of the second rubber spring are both provided with positioning pins.

To sum up, compare with prior art, the beneficial effects of the utility model are that:

1. adopt a railway vehicle's secondary linkage, effectively reduce coil spring's operating stress with spring unit's horizontal direction rigidity value, spring unit's horizontal rigidity value can be adjusted through the number of piles and the rigidity of adjusting both ends rubber spring, and it is convenient to adjust, and structural stability is good, and the unequal coil spring of two-stage height of inside and outside setting can satisfy the poor requirement of freight train empty wagon amount of deflection, and is difficult for producing too big torsional deformation, simple structure, low cost, but wide application in the freight train bogie structure does benefit to and improves freight train functioning speed.

Drawings

FIG. 1 is a schematic view showing a secondary suspension apparatus for a railway vehicle according to embodiment 1;

fig. 2 is a structural sectional view of a spring assembly in embodiment 1.

The labels in the figure are: 1-spring component, 11-first coil spring, 12-second coil spring, 21-first rubber spring, 22-first rubber spring, 31-first limit ring, 32-second limit ring, 4-lug, 51-side beam, 52-cross beam, 61-transverse shock absorber, 62-vertical shock absorber, 7-anti-rolling torsion bar, 8-anti-snaking shock absorber, 91-transverse stop and 92-vertical stop.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments. However, it should not be understood that the scope of the above-mentioned subject matter is limited to the following embodiments, and all the technologies realized based on the present invention are within the scope of the present invention.

Example 1

The utility model relates to a two-series suspension device of railway vehicle, contain two spring assembly, spring assembly contains at least one spring unit 1, two the spring assembly symmetry sets up on the framework, specifically, see figure 1 and show, two spring assembly locate the middle part of framework, with the axial symmetry setting of framework axial central line, the framework contains curb girder 51 and crossbeam 52, spring assembly locates on crossbeam 52, considers comprehensively the size, cost and the effect of bogie, every spring assembly contains two spring assembly 1, certainly also can contain one, three spring assembly 1, two the spring assembly locates at the traction pull rod both sides, and every side is followed the traction pull rod sets up one row, all spring assembly 1 is the centralized arrangement of rectangular array, reduces the torsional deformation of spring assembly 1 to can make the horizontal of bogie more compact, the secondary suspension device further comprises a transverse shock absorber 61, a vertical shock absorber 62, an anti-rolling torsion bar 7, an anti-snaking shock absorber 8, a transverse stop 91 and a vertical stop 92.

Specifically, as shown in fig. 2, the spring assembly 1 includes a first coil spring 11 and a second coil spring 12, the first coil spring 11 is disposed outside the second coil spring 12, a gap is formed between an inner wall of the first coil spring 11 and an outer wall of the second coil spring 12, a height of the first coil spring 11 is higher than a height of the second coil spring 12, a stiffness of the first coil spring 11 is smaller than a stiffness of the second coil spring 12, a spiral direction of the first coil spring 11 is opposite to a spiral direction of the second coil spring 12, so that when the railway vehicle is unloaded, only the first coil spring 11 bears, as a compression amount increases, the second coil spring 12 also bears, and a requirement for a large stiffness of the bogie spring during heavy load is met, an upper end of the first coil spring 11 is connected with the first rubber spring 21, a lower end of the second coil spring 11 is connected with the second rubber spring 22, a lower end of the second coil spring 12 is connected with the second rubber spring 22, the bottom of the rubber spring I21 is provided with a first limiting ring 31, the top of the rubber spring II 22 is provided with a second limiting ring 32, two ends of the spiral spring I11 are respectively clamped with the first limiting ring 31 and the second limiting ring 32, the top of the rubber spring II 22 is provided with a lug 4, and the spiral spring II 12 is clamped with the lug 4.

And in order to facilitate positioning, positioning pins are arranged on the top surface of the first rubber spring 21 and the bottom surface of the second rubber spring 22.

This device can effectively reduce coil spring's operating stress with spring assembly 1's horizontal direction rigidity value, spring assembly 1's horizontal rigidity value can be adjusted through the number of piles and the rigidity of adjusting both ends rubber spring, and it is convenient to adjust, and structural stability is good, and the unequal coil spring of two-stage height that sets up inside and outside can satisfy the poor requirement of freight train empty wagon amount of deflection, and is difficult for producing too big torsional deformation, simple structure, and low cost, but wide application in the freight train bogie structure does benefit to and improves freight train functioning speed.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides a railway vehicle's secondary suspension, characterized in that contains two spring unit, two the spring unit symmetry sets up, the spring unit contains at least one spring unit (1), spring unit (1) contains coil spring one (11) and coil spring two (12), coil spring one (11) are located the outside of coil spring two (12), the height that highly is higher than coil spring two (12) of coil spring one (11), rubber spring one (21) is connected to the upper end of coil spring one (11), rubber spring two (22) is connected to the lower extreme, the lower extreme of coil spring two (12) is connected rubber spring two (22).

2. The secondary suspension device according to claim 1, wherein the stiffness of the first coil spring (11) is smaller than the stiffness of the second coil spring (12).

3. The secondary suspension device according to claim 1, wherein the direction of the spiral of the first coil spring (11) is opposite to the direction of the spiral of the second coil spring (12).

4. The secondary suspension device according to claim 1, wherein the first rubber spring (21) has a first limit ring (31) at the bottom, the second rubber spring (22) has a second limit ring (32) at the top, and two ends of the first coil spring (11) are respectively clamped to the first limit ring (31) and the second limit ring (32).

5. The secondary suspension device according to claim 4, characterized in that the top of the second rubber spring (22) is provided with a bump (4), and the second coil spring (12) is clamped with the bump (4).

6. A secondary suspension according to any one of claims 1 to 5 wherein the spring stack is disposed in the middle of the frame.

7. The secondary suspension system according to claim 6, wherein said frame comprises a side beam (51) and a cross beam (52), and said spring assembly is mounted on said cross beam (52).

8. The secondary suspension arrangement according to claim 7, characterized in that each spring set comprises two spring assemblies (1).

9. The secondary suspension system according to any one of claims 1-5, further comprising a lateral damper (61), a vertical damper (62), an anti-roll bar (7), an anti-hunting damper (8), a lateral stop (91), and a vertical stop (92).

10. The secondary suspension device according to any one of claims 1-5, wherein the top surface of the rubber spring I (21) and the bottom surface of the rubber spring II (22) are provided with positioning pins.