阅读说明：本技术 列车碰撞试验波形模拟系统 (Train crash test waveform simulation system ) 是由 彭勇 邓功勋 胡正晟 许拓 王鑫 姚松 汪馗 于 2021-07-01 设计创作，主要内容包括：本发明公开了列车碰撞试验波形模拟系统,其包括：波形控制器和台车；波形控制器包括一对镜像布设于台车行进方向两侧的台座,台座与地基固定连接；台座用于面向台车的一侧设置有沿行进方向延伸的上支撑座,且上支撑座下方安装有上摩擦板；台车沿行进方向两侧各设置有一侧翼；侧翼上表面能够与上摩擦板下表面发生摩擦以降低车速从而模拟产生碰撞波形。相对于现有技术需要液压控制装置和控制缓冲装置同步配合,本发明仅采用摩擦的方式就能实现模拟碰撞的效果,本发明在结构上较现有技术更为简单,且极大地降低了实施难度,从而能够更有效地控制试验成本并提升试验的可靠性。(The invention discloses a train crash test waveform simulation system, which comprises: a waveform controller and a trolley; the wave controller comprises a pair of pedestals arranged on two sides of the trolley in the advancing direction in a mirror image mode, and the pedestals are fixedly connected with the foundation; an upper support seat extending along the traveling direction is arranged on one side, facing the trolley, of the pedestal, and an upper friction plate is arranged below the upper support seat; a side wing is respectively arranged on each of two sides of the trolley along the advancing direction; the upper surface of the side wing can rub against the lower surface of the upper friction plate to reduce the vehicle speed so as to simulate the collision waveform. Compared with the prior art which needs the synchronous matching of a hydraulic control device and a control buffer device, the invention can realize the effect of simulating collision only by adopting a friction mode, has simpler structure than the prior art, and greatly reduces the implementation difficulty, thereby more effectively controlling the test cost and improving the test reliability.)

1. Train bump test waveform simulation system, its characterized in that includes: a waveform controller (1) and a trolley (2);

the wave controller (1) comprises a pair of pedestals (11) which are arranged on two sides of the travelling direction of the trolley (2) in a mirror image mode, and the pedestals (11) are fixedly connected with a foundation; an upper support seat (12) extending along the advancing direction is arranged on one side, facing the trolley (2), of the pedestal (11), and an upper friction plate (13) is arranged below the upper support seat (12);

two sides of the trolley (2) along the traveling direction are respectively provided with a side wing (21); the upper surface of the side wing (21) can rub against the lower surface of the upper friction plate (13) to reduce the vehicle speed so as to simulate the generation of collision waveforms.

2. The train crash test waveform simulation system according to claim 1, wherein the upper support base (12) and the upper friction plate (13) are connected by lower top bolts (31) and upper lifting bolts (32) alternately distributed along the traveling direction;

the tail of the lower top bolt (31) penetrates through the upper supporting seat (12) and then abuts against the upper friction plate (13), and the lower top bolt (31) can push the upper friction plate (13) away from the upper supporting seat (12);

a countersunk groove is formed in the lower surface of the upper friction plate (13), the head of the lifting bolt (32) is embedded into the countersunk groove, the tail of the lifting bolt passes through the upper supporting seat (12), and the lifting bolt (32) can pull the upper friction plate (13) close to the upper supporting seat (12);

the pressure intensity of the upper friction plate (13) and the side wing (21) can be changed by changing the extending length of the lower top bolt (31) and the upper lifting bolt (32).

3. The train crash test waveform simulation system according to claim 2, wherein a lower support base (14) extending in the traveling direction is provided to a side of the pedestal (11) for facing the trolley (2), and a lower friction plate (15) is installed above the lower support base (14); the lower surface of the side wing (21) can rub with the upper surface of the lower friction plate (15) to reduce the vehicle speed so as to simulate the generation of collision waveforms.

4. The train crash test waveform simulation system according to claim 3, wherein the lower support seat (14) and the lower friction plate (15) are connected by lower top bolts (31) and upper lifting bolts (32) alternately distributed along the traveling direction;

the tail of the lower top bolt (31) penetrates through the lower supporting seat (14) and then abuts against the lower friction plate (15), and the lower top bolt (31) can push the lower friction plate (15) away from the lower supporting seat (14);

a countersunk groove is formed on the upper surface of the lower friction plate (15), the head of the lifting bolt (32) is embedded into the countersunk groove, the tail of the lifting bolt passes through the lower support seat (14), and the lifting bolt (32) can pull the lower friction plate (15) close to the lower support seat (14);

the pressure intensity of the lower friction plate (15) and the side wing (21) can be changed by changing the extending length of the lower top bolt (31) and the upper lifting bolt (32).

5. The train crash test waveform simulation system according to claim 3 wherein the side flap (21) is formed of two vertical plates, one of which is connected to the body of the trolley (2) by a bolt.

6. The train crash test waveform simulation system according to claim 5, wherein a wear plate (211) is installed on the top surface or/and the bottom surface of the other vertical plate through a sunk bolt, and the wear plate (211) is used for rubbing with the upper friction plate (13) or/and the lower friction plate (15).

7. The train crash test waveform simulation system according to any one of claims 1-4, characterized in that the side wings (21) are provided with tapered guide plates (212) along the traveling direction front ends.

8. The train crash test waveform simulation system according to any one of claims 1 to 4, wherein the waveform controller (1) is provided with an energy absorbing module at a front end in the traveling direction; the energy absorption module comprises a uniform force plate (161) which is vertically arranged and used for resisting the impact of the side wings (21) and an energy absorption component (162) which is used for absorbing the impact kinetic energy of the uniform force plate.

9. The train crash test waveform simulation system according to any one of claims 1 to 4 wherein the waveform controller (1) is composed of a plurality of unit modules which are sequentially spliced in the traveling direction.

Technical Field

The invention mainly relates to the technical field of train collision test devices, in particular to a train collision test waveform simulation system.

Background

"safety" is the root of train operations. With the rapid development of the rail transit industry, the passive collision safety performance of the rail vehicle is more and more emphasized while the active safety of the train is improved. The damage form of the train collision accident is various, the collision casualties of the passengers are triggered to be surprised, the collision casualties risk between the passengers and the interior of the train is further aggravated by the unrestrained state of the passengers of the train, and the research on the secondary collision dynamic response of the passengers of the train has important significance for improving the passive safety performance of the train.

The secondary collision test of the railway vehicle passenger is an indispensable research means for researching the collision damage of the passenger, when the collision test is carried out, the test equipment in the prior art is complex in structure and difficult to control, and particularly in the aspect of simulation of collision waveforms, the prior art usually adopts a hydraulic control device and a control buffer device dual system which are cooperated to simulate the collision waveforms. However, the real collision process is very short, the collision waveform is simulated through the cooperation of the two systems in a very short time, and particularly, the hydraulic equipment is coordinated to act immediately according to the data acquired by the sensor, so that the simulation is difficult to realize in actual operation and control, the simulated collision process is possibly seriously inconsistent with the actual collision process, and the test result is distorted.

Disclosure of Invention

The invention mainly aims to overcome the defects in the prior art and solve the problems that the existing train crash test waveform simulation system is complex in structure and difficult to implement.

In order to achieve the above object, the invention discloses a train crash test waveform simulation system, comprising: a waveform controller and a trolley;

the wave controller comprises a pair of pedestals which are arranged on two sides of the trolley in the advancing direction in a mirror image mode, and the pedestals are fixedly connected with the foundation; an upper support seat extending along the advancing direction is arranged on one side, facing the trolley, of the pedestal, and an upper friction plate is arranged below the upper support seat;

a side wing is arranged on each of two sides of the trolley along the advancing direction; the upper surface of the side wing can rub against the lower surface of the upper friction plate to reduce the vehicle speed so as to simulate the collision waveform.

Preferably, the upper support seat is connected with the upper friction plate through lower top bolts and upper lifting bolts which are alternately distributed along the advancing direction;

the tail part of the lower jacking bolt penetrates through the upper support seat and then abuts against the upper friction plate, and the lower jacking bolt can push the upper friction plate away from the upper support seat;

a countersunk groove is formed in the lower surface of the upper friction plate, the head of the lifting bolt is embedded into the countersunk groove, the tail of the lifting bolt penetrates through the upper support seat, and the lifting bolt can pull the upper friction plate close to the upper support seat;

the pressure intensity of the upper friction plate and the side wing can be changed by changing the extending length of the lower top bolt and the upper lifting bolt.

Preferably, a lower support seat extending along the advancing direction is arranged on one side of the pedestal facing the trolley, and a lower friction plate is mounted above the lower support seat; the lower surface of the side wing can rub with the upper surface of the lower friction plate to reduce the vehicle speed so as to simulate the generation of collision waveforms.

Preferably, the lower support seat is connected with the lower friction plate through lower top bolts and upper lifting bolts which are alternately distributed along the advancing direction;

the tail of the lower jacking bolt penetrates through the lower supporting seat and then abuts against the lower friction plate, and the lower jacking bolt can push the lower friction plate away from the lower supporting seat;

a countersunk groove is formed on the upper surface of the lower friction plate, the head of the lifting bolt is embedded into the countersunk groove, the tail of the lifting bolt penetrates through the lower support seat, and the lifting bolt can pull the lower friction plate close to the lower support seat;

the pressure intensity of the lower friction plate and the side wing can be changed by changing the extending length of the lower top bolt and the extending length of the upper lifting bolt.

Preferably, the side wings are formed by two vertical plates, wherein one of the vertical plates is connected with the trolley body through a bolt.

Preferably, the top surface or/and the bottom surface of the other vertical plate is/are provided with a wear plate through a sunk bolt, and the wear plate is used for rubbing with the upper friction plate or/and the lower friction plate.

Preferably, the side wing is provided with a tapered guide plate along the front end in the traveling direction.

Preferably, the wave controller is provided with an energy absorption module along the front end of the advancing direction; the energy absorption module comprises a uniform force plate which is vertically arranged and used for resisting the impact of the side wings and an energy absorption component which is used for absorbing the impact kinetic energy of the uniform force plate.

Preferably, the waveform controller is formed by sequentially splicing a plurality of unit modules along the advancing direction.

Compared with the prior art, the invention has the advantages that:

the upper support seat and the upper friction plate are arranged on the wave controllers arranged on two sides of the travelling direction of the trolley, and the two sides of the trolley along the travelling direction are respectively provided with the side wing. Compared with the prior art which needs the synchronous matching of a hydraulic control device and a control buffer device, the invention can realize the effect of simulating collision only by adopting a friction mode, has simpler structure than the prior art, and greatly reduces the implementation difficulty, thereby more effectively controlling the test cost and improving the test reliability.

Drawings

FIG. 1 is a schematic view of the structure of the trolley;

FIG. 2 is a schematic diagram of a waveform controller;

FIG. 3 is a schematic structural view of a unit module;

fig. 4 is an assembly schematic of the friction plate.

The reference numerals in the figures denote: 1. a waveform controller; 11. a pedestal; 12. an upper support base; 13. an upper friction plate; 14. a lower support seat; 15. a lower friction plate; 161. a force-balancing board; 162. an energy absorbing member; 2. a trolley; 21. a side wing; 211. a wear plate; 212. a guide plate; 31. a lower jack bolt; 32. and lifting the bolt.

Detailed Description

The invention will be described in further detail below with reference to the drawings and specific examples.

The invention discloses a train crash test waveform simulation system.

Example 1

As shown in fig. 1 to 3, a first embodiment of a train crash test waveform simulation system according to the present invention includes: a waveform controller 1 and a trolley 2;

the wave controller 1 comprises a pair of pedestals 11 which are arranged on two sides of the trolley 2 in the advancing direction in a mirror image mode, and the pedestals 11 are fixedly connected with a foundation; an upper support 12 extending along the traveling direction is arranged on one side of the pedestal 11 facing the trolley 2, and an upper friction plate 13 is arranged below the upper support 12;

two sides of the trolley 2 along the traveling direction are respectively provided with a side wing 21; the upper surface of the side wing 21 can rub against the lower surface of the upper friction plate 13 to reduce the vehicle speed to simulate a crash waveform.

By arranging the upper supporting seat 12 and the upper friction plate 13 on the wave form controller 1 arranged on two sides of the traveling direction of the trolley 2 and respectively arranging the side wings 21 on the two sides of the trolley 2 along the traveling direction, when the trolley 2 slides to the area clamped by the wave form controller 1, the side wings 21 slide into the lower side of the upper friction plate 13, and at the moment, the upper friction plate 13 generates downward pressure and friction on the side wings 21, so that the sliding speed of the trolley 2 can be reduced, and the collision deceleration effect is produced. Compared with the prior art which needs the synchronous matching of a hydraulic control device and a control buffer device, the invention can realize the effect of simulating collision only by adopting a friction mode, has simpler structure than the prior art, and greatly reduces the implementation difficulty, thereby more effectively controlling the test cost and improving the test reliability.

Example 2

As shown in fig. 4, a second embodiment of the train crash test waveform simulation system of the present invention is substantially the same as embodiment 1 except that:

in this embodiment, the upper support 12 and the upper friction plate 13 are connected by lower top bolts 31 and upper lifting bolts 32 alternately distributed along the traveling direction;

the tail of the lower top bolt 31 passes through the upper support 12 and then abuts against the upper friction plate 13, and the lower top bolt 31 can push the upper friction plate 13 away from the upper support 12;

a countersunk groove is formed on the lower surface of the upper friction plate 13, the head of the lifting bolt 32 is embedded into the countersunk groove, the tail of the lifting bolt passes through the upper support 12, and the lifting bolt 32 can pull the upper friction plate 13 close to the upper support 12;

by changing the length of the lower top bolt 31 and the upper lifting bolt 32, the pressure between the upper friction plate 13 and the side wing 21 can be changed.

When the lower top bolt 31 extends downwards, the tail part of the lower top bolt 31 pushes the upper friction plate 13 away from the upper supporting seat 12, so that the upper friction plate moves downwards, the pressure between the upper friction plate and the side wing 21 positioned below the upper friction plate is increased, and the friction force is increased; and vice versa. When the lifting bolt 32 extends upwards, the head of the lifting bolt 32 pulls the upper friction plate 13 close to the upper support 12, so that the upper friction plate moves upwards, the pressure between the upper friction plate and the side wing 21 below the upper friction plate is reduced, and the friction force is reduced; and vice versa. By adjusting the lower jack bolt 31 and the upper jack bolt 32 at different positions, respectively, different frictional forces can be obtained, thereby simulating different collision waveforms. Moreover, in order to avoid collision and friction damage of the head of the lifting bolt 32 with the wing 21, a countersunk groove for accommodating the head of the lifting bolt 32 is formed in the lower surface of the upper friction plate 13, and the head of the lifting bolt 32 can be completely hidden in the countersunk groove to avoid collision and friction with the wing 21.

Example 3

The third embodiment of the waveform simulation system for train crash test of the present invention is basically the same as embodiment 2, except that:

in this embodiment, a lower support seat 14 extending in the traveling direction is provided on one side of the pedestal 11 facing the trolley 2, and a lower friction plate 15 is installed above the lower support seat 14; the lower surface of the side wing 21 can rub against the upper surface of the lower friction plate 15 to reduce the vehicle speed to simulate a crash waveform.

Similar to the action of the upper friction plate 13, in order to increase the friction force, a lower support seat 14 is provided on the side of the pedestal 11 facing the trolley 2, and a lower friction plate 15 is installed above the lower support seat 14, when the trolley 2 slides to the area clamped by the wave form controller 1, the side wing 21 slides into the upper side of the lower friction plate 15, and at this time, the lower friction plate 15 generates an upper pressure on the side wing 21 and generates friction, so that the sliding speed of the trolley 2 can be reduced, and the collision deceleration effect is produced.

In this embodiment, the lower support seat 14 is connected to the lower friction plate 15 by lower top bolts 31 and upper lifting bolts 32 alternately distributed along the traveling direction;

the tail of the lower top bolt 31 passes through the lower support seat 14 and then abuts against the lower friction plate 15, and the lower top bolt 31 can push the lower friction plate 15 away from the lower support seat 14;

a countersunk groove is formed on the upper surface of the lower friction plate 15, the head of the lifting bolt 32 is embedded into the countersunk groove, the tail of the lifting bolt passes through the lower support seat 14, and the lifting bolt 32 can pull the lower friction plate 15 close to the lower support seat 14;

by changing the length of the lower top bolt 31 and the upper lifting bolt 32, the pressure between the lower friction plate 15 and the side wing 21 can be changed.

In order to further adjust the magnitude of the friction force, the same connection mode between the upper friction plate 13 and the upper support seat 12 is adopted between the lower friction plate 15 and the lower support seat 14, so as to achieve the same technical effects.

Example 4

The fourth embodiment of the waveform simulation system for train crash test of the present invention is basically the same as embodiment 1, except that:

in this embodiment, the side wing 21 is formed of two vertical plates, and one of the vertical plates is connected to the body of the bogie 2 by a bolt.

It is understood that the side flaps 21 will be subjected to extreme impact forces during the test, which may cause damage. For the convenience of replacement, the side wing 21 is connected to the carriage 2 by a bolt.

In this embodiment, the wear plate 211 is mounted on the top surface or/and the bottom surface of the other vertical plate by means of a sunk bolt, and the wear plate 211 is used for rubbing with the upper friction plate 13 or/and the lower friction plate 15.

Since long-term friction will cause abrasion to the equipment, in order to reduce cost and facilitate replacement, a wear plate 211 is installed on the top surface or/and the bottom surface of another vertical plate through a sunk bolt, the wear plate 211 is used for rubbing with the upper friction plate 13 or/and the lower friction plate 15, and after the vertical plate is used for a period of time, only the friction plate needs to be replaced.

In the present embodiment, the side wings 21 are provided with tapered guide plates 212 along the front ends in the direction of travel.

In order to reduce the probability of damage to the test equipment and the influence on the test result caused by the collision between the end of the side wing 21 and the end of the friction plate, the tapered guide plate 212 is arranged, the front end of the guide plate 212 is in a pointed structure, and the probability of collision with the end of the friction plate can be effectively reduced.

In the embodiment, the wave controller 1 is provided with an energy absorption module along the front end of the traveling direction; the energy-absorbing module comprises a uniform force plate 161 vertically arranged for resisting the impact of the side wings 21 and an energy-absorbing member 162 for absorbing the impact kinetic energy of the uniform force plate.

When the kinetic energy of the bogie 2 is too large to completely brake by friction, the side flaps 21 strike the vertically disposed leveling plates 161, and the leveling plates 161 disperse and transmit the impact force to the energy absorbing members 162 located therebehind. The energy-absorbing member 162 includes any one of a honeycomb aluminum, a circular tube, a square tube or other energy-absorbing structures, and the energy-absorbing member 162 absorbs energy by deformation and cushions the trolley 2 to prevent the trolley 2 from being damaged by rushing out of a rail or impacting a barrier.

In this embodiment, the waveform controller 1 is formed by sequentially splicing a plurality of unit modules along the traveling direction.

In order to facilitate the assembly, disassembly and maintenance and adjust the length according to the test requirements, the waveform controller 1 adopts an assembling structure, and a plurality of unit modules are sequentially connected along the advancing direction to form a whole.

Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Those skilled in the art can make numerous possible variations and modifications to the present invention, or modify equivalent embodiments to equivalent variations, without departing from the scope of the invention, using the teachings disclosed above. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention should fall within the protection scope of the technical scheme of the present invention, unless the technical spirit of the present invention departs from the content of the technical scheme of the present invention.