CN107161168A - Rail smooth degree on train bogie dynamically adjusts adaptive device and control method - Google Patents

Abstract

The invention discloses a track smoothness dynamic adjustment adapting device and a control method on a train bogie. The device includes a digitally controlled telescopic jack; In this method, the telescopic length of the numerical control telescopic jack is adjusted according to the unevenness of the track. The invention has the advantage that the digitally controlled telescopic jack arranged between the primary suspension spring and the axle box can actively and real-time adjust the height of the train bogie, so that each wheel can actively adapt to the vertical irregularity of the track, thereby effectively Reduce bogie vibration and small car vibration, and at the same time effectively reduce the track vibration and foundation vibration caused by the driving process, and have the effect of reducing noise and reducing the energy consumption of train operation.

Description

Track smoothness dynamic adjustment adaptation device and control method on train bogie

technical field

The invention belongs to the field of rail transportation, and in particular relates to a track smoothness dynamic adjustment adaptation device and a control method on a train bogie.

Background technique

With the increase of the running time of rail transit lines, the track foundation will inevitably undergo settlement and deformation, which will affect the vertical smoothness of the track. Rail transit trains, especially high-speed trains, have high requirements on the smoothness of the track. When there is a certain vertical irregularity on the track, the wheel-rail interaction is strengthened, and the vibration of the train is intensified. At the same time, the vibration of the track and the dynamic stress of the track foundation are even This will affect the comfort of passengers, increase the noise of wheel and rail, and even affect the safety of train running. In addition, the aggravation of vibration and noise will also increase the energy consumption during train operation. When the vertical irregularity occurs, the wheel-rail interaction is strengthened, which leads to the increase of the dynamic stress of the track foundation, thereby accelerating the settlement of the foundation foundation, and also accelerating the development of the vertical irregularity of the track. Under the background that ballastless track is widely used in high-speed railway lines and subway lines, it is difficult to adjust the vertical irregularity of the track. As shown in Figure 1, it is a schematic diagram of a common train bogie in the prior art. A series of suspension springs 3 are arranged between the side frame 6 and the axle box 4 of the train bogie. The vertical load transmission path of the bogie is: For → axle box 4 → primary suspension spring 3 → bogie → secondary suspension spring → carriage; it can be found that the train bogie in the prior art cannot actively and real-time adjust the vertical smoothness of the track.

Therefore, proposing a dynamic adjustment device and digital control method for train bogies that actively adapt to track irregularities has important theoretical and practical significance for the development and application of rail transit.

Contents of the invention

The object of the present invention is to provide a track smoothness dynamic adjustment adaptation device and control method on the train bogie according to the shortcomings of the above-mentioned prior art. The CNC telescopic jack enables the frame and the train to effectively adapt to the unevenness of the track.

The object of the present invention is realized by the following technical solutions:

A track smoothness dynamic adjustment and adaptation device on a train bogie, the track smoothness dynamic adjustment and adaptation device includes a digitally controlled telescopic jack; the digitally controlled telescopic jack is arranged between a series of suspension springs and an axle box of the train bogie between.

The upper part of the digitally controlled telescopic jack is fitted with a jack cover, and the outer wall of the jack cover has a protruding platform; the first series of suspension springs are set outside the jack cover, and its bottom end is supported on the jack cover. On the platform.

The telescopic range of the digitally controlled telescopic jack is 10cm to 20cm.

The track smoothness dynamic adjustment and adaptation device also includes a jack control system, and the jack control system is connected to control the expansion and contraction of the digitally controlled telescopic jack.

The control method includes the following steps: detecting the vertical smoothness information of the track; during the operation of the train, the jack control system according to the running state of the train, the installation position of the digitally controlled telescopic jack and the vertical smoothness information The telescopic length and speed of the digitally controlled telescopic jack are controlled to actively adjust the height of the train bogie.

Using a rail inspection vehicle to detect the vertical smoothness information corresponding to the mileage of the rail inspection vehicle.

The advantage of the present invention is that the digitally controlled telescopic jack arranged between the primary suspension spring and the axle box can actively and real-time adjust the height of the train bogie, so that each wheel can actively adapt to the vertical irregularity of the track, thereby effectively Reduce the vibration of the carriage and the bogie, and at the same time effectively reduce the track vibration and foundation vibration caused by the driving process. While damping vibration, it also has the effect of reducing noise and reducing energy consumption during train operation.

Description of drawings

Fig. 1 is the schematic diagram of the side frame structure of the train bogie in the prior art

Fig. 2 is the sideframe structure schematic diagram of train bogie among the present invention;

Fig. 3 is a schematic flow chart of the control method of the track smoothness dynamic adjustment and adaptation device on the train bogie in the present invention.

Fig. 4 is the schematic diagram when the train in the prior art is running on an uneven track;

Fig. 5 is a schematic diagram of a train installed with the track smoothness dynamic adjustment and adaptation device of the present invention running on an uneven track.

detailed description

The features of the present invention and other relevant features are described in further detail below in conjunction with the accompanying drawings through the embodiments, so as to facilitate the understanding of those skilled in the art:

As shown in Figure 1-5, the marks 1-9 in the figure are: CNC telescopic jack 1, jack control system 2, primary suspension spring 3, axle box 4, jack jacket 5, side frame 6, bearing platform 7, rail 8, wheel 9.

Embodiment: As shown in Figures 2 and 3, this embodiment specifically relates to a track smoothness dynamic adjustment adaptation device on a train bogie, which includes a digitally controlled telescopic jack 1 and a jack control system 2; the digitally controlled telescopic jack 1 is arranged on the train between the primary suspension spring 3 of the bogie and the axle box 4; the jack control system 2 is connected to the control end of the CNC telescopic jack 1, and the telescopic length of the CNC telescopic jack 1 can be controlled by the jack control system 2 according to the smoothness data of the track; The telescopic scope of telescopic jack 1 is 10cm to 20cm.

As shown in Figures 2 and 3, in the present embodiment, the wheelset of the train is installed on the axle box 4; the upper part of the digitally controlled telescopic jack 1 is fitted with a jack cover 5, and the outer wall surface of the bottom of the jack cover 5 has an outwardly convex bearing. Platform 7; a series of suspension springs 3 are set on the outside of the jack jacket 5 and its bottom end is supported on the platform 7; the top of the series of suspension springs 3 is connected to the bottom of the side frame 6 of the train bogie; the load of the train is sequentially It is transmitted to the track through the secondary suspension spring, the bogie, the primary suspension spring 3, the axle box 4 and the wheelset.

As shown in Figures 2 and 3, the control method of the track smoothness dynamic adjustment adaptation device on the train bogie in this embodiment specifically includes the following steps:

1) Use the rail inspection vehicle to detect the smoothness of the track. During the detection process, the rail inspection vehicle continuously detects its mileage and the vertical smoothness corresponding to the mileage, and saves the mileage and the corresponding vertical smoothness in the database Medium; through detection, the vertical smoothness of any position on the track can be obtained.

2) According to the collected vertical smoothness of the track, evaluate and analyze the irregular state of the line.

3) Before the train departs, store the smooth data of the train running track in the jack control system 2 .

4) During the operation of the train, the relative position between each CNC telescopic jack 1 and the track is determined according to the position of the train and the installation position of each CNC telescopic jack 1 on the train. The relative position between them obtains the vertical smoothness of the track below each CNC telescopic jack 1; the jack control system 2 takes the vertical smoothness of the track and the running speed of the train as input parameters, and uses a control algorithm to calculate the vertical smoothness of each CNC telescopic jack 1 Telescopic length and telescopic speed, and send the calculated telescopic length and telescopic speed to the control end of each CNC telescopic jack 1, and the CNC telescopic jack 1 actively and in real time adjusts its telescopic length according to the instructions of the jack control system 2, and then actively adjusts The height of the train bogie is adapted to the vertical irregularity of the track.

As shown in Figures 4 and 5, there is a large depression in the track 8; the train in Figure 4 is not equipped with the track smoothness dynamic adjustment adaptation device of this embodiment, so when the train in Figure 4 passes through the depression of the track 8, the train's The wheel 9 fluctuates along the depression of the track 8, thereby causing the train to vibrate and bump; while the train in Fig. 5 is equipped with the track smoothness dynamic adjustment adaptation device of this embodiment; 1 stretches downward, which enables the train to automatically and actively adapt to the irregularity of the track 8, and avoid the vertical irregularity of the track 8 from causing the train to vibrate and bump.

The beneficial technical effect of this embodiment is: the digitally controlled telescopic jack arranged between the primary suspension spring and the axle box can actively and real-time adjust the height of the train bogie, so that each wheel can actively adapt to the vertical irregularity of the track, In this way, the wheel-rail interaction can be effectively reduced, as well as the vibration of the carriage and the bogie. At the same time, it can effectively reduce the track vibration and foundation vibration caused by the driving process, reduce the noise during the train operation, and save the energy consumption of the train operation. .

Claims (6)

1. the rail smooth degree on a kind of train bogie dynamically adjusts adaptive device, it is characterised in that the rail smooth degree is moved State adjustment adaptive device includes numerical control telescopic jack；The numerical control telescopic jack is arranged at the one of the train bogie Between pendulum spring and axle box.

2. the rail smooth degree on a kind of train bogie according to claim 1 dynamically adjusts adaptive device, its feature It is that the top of the numerical control telescopic jack is set with a jack overcoat, the outside wall surface of the jack overcoat with outer Convex cushion cap；The single stage suspension spring housing be mounted in the jack overcoat outside, and its bottom be supported on the cushion cap it On.

3. the rail smooth degree on a kind of train bogie according to claim 1 dynamically adjusts adaptive device, its feature The telescopic extensions for being the numerical control telescopic jack are 10cm ~ 20cm.

4. the rail smooth degree on a kind of train bogie according to claim 1 dynamically adjusts adaptive device, its feature It is that dynamically adjustment adaptive device also includes a very heavy top control system to the rail smooth degree, the very heavy top control system connects Connect the flexible of the control numerical control telescopic jack.

5. a kind of rail smooth degree being related in claim 1-4 on any described train bogie dynamically adjusts adaptive device Control method, it is characterised in that the control method comprises the following steps：Detect the vertical smooth degree information of track；In train In running, very heavy top control system is according to the running status of the train, the installation site of the numerical control telescopic jack And the vertical smooth degree information controls the collapsing length and speed of the numerical control telescopic jack, to be arranged described in active accommodation The height of car bogie.

6. the rail smooth degree on a kind of train bogie according to claim 5 dynamically adjusts the controlling party of adaptive device Method, it is characterised in that using track checking car detect the track on the mileage number where the track checking car it is corresponding described vertical Smooth degree information.