CN216709302U

CN216709302U - Train damping bogie

Info

Publication number: CN216709302U
Application number: CN202220053319.0U
Authority: CN
Inventors: 肖望强; 詹镕勋; 陈昌海
Original assignee: Xiamen Zhenwei Technology Co ltd
Current assignee: Xiamen Zhenwei Technology Co ltd
Priority date: 2022-01-11
Filing date: 2022-01-11
Publication date: 2022-06-10
Anticipated expiration: 2032-01-11

Abstract

The utility model discloses a train damping bogie, which comprises a bogie and a traction rod, wherein the framework comprises: the damping device comprises a left side beam, a right side beam and a cross beam connected with the two side beams, wherein a plurality of hollow cavities or external boxes are arranged at the end parts of the side beams, and a plurality of damping particles are filled in the hollow cavities or the external boxes. The utility model reduces vibration and noise of the train when the train runs at high speed by damping and colliding energy consumption mechanisms of damping particles filled in the hollow cavity or the external box body of the framework, thereby reducing vibration and noise of the train, and particularly reducing vibration peak value and noise value under specific frequency when the train runs at resonance.

Description

Train damping bogie

Technical Field

The utility model relates to the technical field of bogies, in particular to a damping bogie for a train.

Background

At present, the riding comfort of the train in China is continuously improved while the speed of the train is increased, and great requirements are made on controlling the vibration and noise of the train during high-speed running. During the high-speed running of the train, the vibration causes loud noise and damage to the structural members, and particularly when the train is in resonance, the noise of the train bogie is loud and can generate huge impact on the structural members.

The bogie of the train is one of the most important parts in the structure of the railway vehicle, and various parameters of the bogie directly determine the stability of the vehicle and the riding comfort of the vehicle.

The existing train bogie only has vibration isolation at the connecting position of wheels and a frame and vibration isolation between the bogie and a train body through an air spring, but in the high-speed running process of a train, vibration and noise are large, the vibration can be transmitted to the train body, the comfort of the train is influenced, structural members such as the frame and a traction rod are easily damaged by resonance impact, the service life of the structural members is shortened, and the stability and the reliability are reduced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a damping bogie for a train, which is used for reducing vibration and noise of the train when the train runs at a high speed.

In order to achieve the purpose, the technical scheme provided by the utility model is as follows:

a train damping bogie comprising a frame and a drawbar, said frame comprising: the damping device comprises a left side beam, a right side beam and a cross beam connected with the two side beams, wherein a plurality of hollow cavities or external boxes are arranged at the end parts of the side beams, and a plurality of damping particles are filled in the hollow cavities or the external boxes.

Preferably, a plurality of cavities are arranged in the rod body of the traction rod, and a plurality of damping particles are filled in the cavities.

Furthermore, the plurality of damping particles are filled in the hollow cavity of the framework after being filled in the container.

Furthermore, the container is a flexible bag or a box body fixed in the hollow cavity.

Furthermore, the damping particles are filled in the cavity of the traction rod after being filled in the container.

Furthermore, the container is a flexible bag or a box body fixed in the cavity.

Furthermore, two adjacent hollow cavities of the framework are separated by a partition plate, and the damping particles filled in each hollow cavity are different in material and/or particle size.

Furthermore, the specific gravity of the damping particles is 0.15-0.3, and the filling rate of the damping particles is 60-95%.

Preferably, a damper is mounted on the drawbar, and the damper includes: a particle box fixed at the outer side of the traction rod, and damping particles filled in the particle box.

Further, the particle box is coated on the rod body of the traction rod and comprises: the two semi-annular shells are provided with connecting plates on opposite sides, and the two shells are connected into an annular shape through the connecting plates.

By adopting the technical scheme, the utility model has the beneficial effects that:

(1) the utility model reduces vibration and noise of the train when the train runs at high speed by damping and reducing the energy consumption mechanism of friction and collision of damping particles filled in a hollow chamber at the end part of the side beam of the frame or an external box, and particularly reduces the vibration peak value and the noise value under specific frequency when the train runs at resonance.

(2) According to the utility model, the damping particles filled in the cavity of the rod body of the traction rod or the damping particles filled in the particle box of the shock absorber are used for damping and reducing the noise of the traction rod through an energy consumption mechanism of friction and collision, so that the vibration transmitted to a train body through the traction rod is further reduced, and the riding comfort of a train is improved.

Drawings

Fig. 1 is a schematic perspective view of a frame according to a first embodiment.

Fig. 2 is an enlarged schematic view of a portion a in fig. 1.

Fig. 3 is an enlarged schematic view of fig. 1 at B.

Fig. 4 is a partial structural diagram of a framework according to the second embodiment.

Fig. 5 is a partial structural diagram of a framework of the second embodiment.

Fig. 6 is a schematic perspective view of a frame according to a third embodiment.

Fig. 7 is a schematic perspective view of a drawbar according to a fourth embodiment.

Fig. 8 is a schematic half-section view of the drawbar of fig. 7.

FIG. 9 is a diagram showing the effects of the fourth embodiment.

Fig. 10 is a schematic half sectional view of a fifth embodiment of a drawbar.

Fig. 11 is a schematic half sectional view of a fifth embodiment of a drawbar.

Fig. 12 is a schematic perspective view of a drawbar according to a sixth embodiment.

Fig. 13 is a schematic perspective view of fig. 12 with one housing removed.

Wherein: 1. the damping device comprises a side beam, a cross beam 2, a traction rod 3, a hollow cavity 4, damping particles 5, a flexible bag 6, a box 7, a partition plate 8, a cavity 9, a particle box 10, a shell 11, a connecting plate 12 and an external box 13.

Detailed Description

The utility model is further described with reference to the following drawings and detailed description.

The utility model discloses a train damping bogie, which comprises a framework and a traction rod, wherein the framework comprises: the damping device comprises a left side beam 1, a right side beam 1 and a cross beam 2 connecting the two side beams 1, wherein a plurality of hollow cavities 4 or external box bodies 13 are arranged at the end parts of the side beams 1, and a plurality of damping particles 5 are filled in the hollow cavities 4 or the external box bodies 13.

Resonance refers to the situation where a physical system vibrates at a particular frequency and wavelength with a greater amplitude than at other frequencies and wavelengths. These specific frequencies and wavelengths are referred to as resonant frequencies and resonant wavelengths.

The frame is the framework of the bogie, and the mounting base of other parts is used for connecting all components of the bogie and transmitting all-direction force, and is used for maintaining the position of the axle in the bogie.

The framework of the bogie and a plurality of damping particles 5 filled in the hollow chamber 4 (external box body 13) of the framework form a coupled and closed highly nonlinear dynamic system, and the kinetic energy of a vibrating body is rapidly dissipated by friction and inelastic collision among the damping particles 5 and between the damping particles 5 and the inner wall of the hollow chamber 4 (external box body 13) of the framework, so that the vibration damping and noise reduction effects are achieved. The vibration reduction is carried out through the framework to the bogie of train to reduce the vibration that produces when the train moves and pass through the framework and transmit for the automobile body, and then promote the travelling comfort in the carriage, and reduce the resonance peak value of framework when the train is gone at a high speed, the structural damage of framework when reducing resonance improves the life-span of framework.

The utility model will be further illustrated in connection with several preferred embodiments thereof.

Example one

The frame of the bogie has a variety of closed and open (or H-frame) frames depending on the structural configuration of the frame. The present embodiment takes an open frame as an example to illustrate the damping effect of the train damping bogie of the present invention. The closed framework has the same vibration reduction effect as the open framework.

As shown in fig. 1 to 3, in the present embodiment, a plurality of hollow chambers 4 are provided at both ends of two side beams 1 of the frame, and damping particles 5 are filled in the hollow chambers 4. The filling rate of the damping particles 5 in the hollow cavity 4 is in the range of 60% -95%, wherein the filling rate of the damping particles 5 is in the range of 90% -95%, and the damping effect is better. Under the condition that the conditions such as the filling rate of the damping particles 5 are not changed, the specific gravity (relative density) of the damping particles 5 is within the range of 0.15-0.3, and the vibration reduction performance-price ratio is high.

In this embodiment, the hollow chamber 4 is partitioned by a plurality of partition plates 8, and the number of rows and columns of the hollow chamber 4 partitioned by the partition plates 8 can be set according to actual needs. Of course, the partition plate 8 may also serve as a support member for the side member 1, increasing the rigidity of the side member 1.

The material and/or particle size of the damping particles 5 filled in each hollow chamber 4 can be set according to the requirement, and can be the same or different. Aiming at the problems that the bogie has more resonance frequencies and the resonance frequencies are large or small, the damping particles 5 filled in each hollow cavity 4 are made of different materials and/or different particle sizes, so that the vibration attenuation can be performed on various resonance frequencies in a targeted manner, and the vibration attenuation effect is good.

Example two

In addition to directly filling the hollow chamber 4 with the damping particles 5 in bulk as described in the first embodiment, the damping particles 5 may be first filled in a container and then filled into the hollow chamber 4, as shown in fig. 4 and 5, to facilitate the filling of the damping particles 5 and the processing of the frame. Specifically, the container may be either the flexible bag 6 or the box 7. The flexible bag 6 can isolate damping particle 5 and the 4 inner walls of well cavity room, makes damping

particle

5 and 4 inner walls of well cavity room not direct contact to reduce vibration and noise that damping particle 5 and the 4 inner walls of well cavity room collided and produced, in order to promote the damping effect, reduce the noise. When the container is a box body 7, a nonlinear dynamic system is formed between the damping particles 5 and the box body 7, at the moment, the box body 7 needs to be fixed in the hollow cavity 4, so that the vibration of the framework can be transmitted into the box body 7, the vibration damping performance of the nonlinear dynamic system formed by the damping particles 5 and the box body 7 is fully exerted, and the vibration damping effect is ensured. The box body 7 can be fixed in the hollow cavity 4 in a stable and reliable mode such as welding, bolt connection, bonding and the like.

EXAMPLE III

As shown in fig. 6, the present embodiment is suitable for modifying the existing framework, a plurality of external boxes 13 are directly fixed on the outer wall of the end of the side beam by welding, riveting, or the like, and damping particles 5 are filled in the external boxes 13, so as to achieve vibration reduction and noise reduction of the framework.

Example four

As shown in fig. 7 and 8, in this embodiment, on the basis of the first embodiment, the second embodiment and the third embodiment, at least one cavity 9 is formed in the shaft of the drawbar 3 of the bogie, and a plurality of damping particles 5 are filled in the cavity 9.

The traction device is a device which connects the train body and the bogie in a joint mode in the longitudinal direction, is used for transmitting traction force and braking force, can be arranged at a lower position to realize low-position traction, is favorable for full exertion of adhesive traction force, and consists of a traction rod 3 and a connecting structure. During the high-speed running process of the train, the vibration generated by the running of the train is transferred to the train body through the traction device.

In the embodiment, the traction rod 3 and the plurality of damping particles 5 filled in the cavity 9 of the traction rod 3 form a coupled and closed highly nonlinear dynamic system to damp the traction rod 3, so that vibration generated during train running is reduced and transmitted to a train body through the traction rod 3, the resonance peak value of the traction rod 3 when the train runs at high speed is reduced, the traction rod 3 is protected from being damaged by resonance impact, and the service life and the reliability of the traction rod 3 are improved.

According to actual needs, a plurality of cavities 9 are separated by arranging the partition plates 8 in the traction rod 3, the cavities 9 are filled with damping particles 5 made of the same or different materials and/or different particle sizes, and the damping particles 5 made of different materials and/or different particle sizes can damp multiple resonance frequencies in a targeted manner, so that the damping effect is enhanced.

When a vibration test is performed using the bogie having the frame and the drawbar 3 of the present embodiment, the test result is shown in fig. 9, in which a is a vibration amplitude curve of a conventional bogie and b is a vibration amplitude curve of a damping bogie (based on a conventional bogie) for a train according to the present invention, it is obvious that the damping effect of the damping bogie for a train according to the present invention is better.

EXAMPLE five

As shown in fig. 10 and 11, the present embodiment is different from the fourth embodiment in that the damping particles 5 are filled in a container such as a flexible bag 6 or a box 7 and then filled in the cavity 9 of the drawbar 3 by the filling manner of the damping particles 5 shown in the second embodiment.

EXAMPLE six

As shown in fig. 12 and 13, in this embodiment, on the basis of the first, second and third embodiments, the damper is directly mounted on the exterior of the drawbar 3 of the bogie, and the damper can be directly fixed on the drawbar 3 by welding, bolting, etc. In this embodiment, the damper includes: the particle box 10 fixed on the outer side of the traction rod 3 and the damping particles 5 filled in the particle box 10 form a nonlinear dynamic system, the traction rod 3 is damped, an external damper cannot damage the structure of the existing traction rod 3, and the existing traction rod 3 is convenient to modify.

In order to facilitate the mounting of the damper on the drawbar 3, the particle cassette 10 of the damper comprises: two semi-annular shells 11, the opposite sides of two shells 11 all are equipped with connecting plate 12, and two shells 11 pass through connecting plate 12 and connect the circularity, cladding on the shaft body of traction lever 3.

While the utility model has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the utility model as defined by the appended claims.

Claims

1. A train damping bogie comprises a framework and a traction rod, and is characterized in that the framework comprises: the damping device comprises a left side beam, a right side beam and a cross beam connected with the two side beams, wherein a plurality of hollow cavities or external boxes are arranged at the end parts of the side beams, and a plurality of damping particles are filled in the hollow cavities or the external boxes.

2. The train damping bogie of claim 1, wherein a plurality of cavities are formed in the body of the drawbar, and a plurality of damping particles are filled in the cavities.

3. The train damping bogie of claim 1, wherein said plurality of damping particles are loaded into said hollow chamber of said frame after being loaded into said container.

4. The train damping bogie of claim 3, wherein the container is a flexible bag or a box secured within a hollow chamber.

5. The train damping bogie of claim 2, wherein said plurality of damping particles are loaded into said drawbar cavity after being loaded into said container.

6. The train damping bogie of claim 5, wherein said container is a flexible bag or a box secured within a cavity.

7. The train damping bogie of claim 1, wherein two adjacent hollow chambers of said framework are separated by a partition plate, and the material and/or particle size of the damping particles filled in each of said hollow chambers are different.

8. The train damping bogie of claim 2, wherein the damping particles have a specific gravity of 0.15-0.3 and a packing rate of 60-95%.

9. The train damping bogie of claim 1, wherein a shock absorber is mounted on said drawbar, said shock absorber comprising: a particle box fixed at the outer side of the traction rod, and damping particles filled in the particle box.

10. The train damping bogie of claim 9, wherein said particle cassette is coated on a stem of a drawbar, comprising: the two semi-annular shells are provided with connecting plates on opposite sides, and the two shells are connected into an annular shape through the connecting plates.