CN206095570U - Train striking model test equipment - Google Patents

Abstract

A train impact model test equipment is characterized in that: an I-shaped steel for simulating a track is placed in the middle of the platform, and a train marshalling model is installed on the I-shaped steel; both sides of the front part of the train marshalling model are provided with wing plates, and the rear of the wing plate is The impact cylinder is fixed on the table; the impact cylinder is connected with the air compressor; the angle-adjustable rigid baffle that simulates the side wall of the tunnel is fixed on the table in front of the train marshalling model, and a force sensor is installed on the rigid baffle; the front part of the I-shaped steel Two laser transmitters are installed on one side of the table, and two laser sensors are installed on the other side of the table. The device can simulate the impact of the train marshalling on the side wall of the tunnel at different speeds and different impact angles, and obtain the impact force of the train derailment hitting the tunnel, so as to provide more accurate and reliable test basis for the anti-collision design and construction of the tunnel, so as to avoid train derailment The impact will cause serious damage to the tunnel, induce secondary disasters such as floods, and reduce casualties and losses caused by accidents.

Description

Train impact model test equipment

technical field

The utility model relates to a train impact model test equipment.

Background technique

In recent years, with the increase of train speed, train derailment incidents have occurred frequently around the world, such as the derailment accident of an intercity express train near the town of Eschede in Germany in 1998, and the derailment accident of a train on the YTN high-speed railway in South Korea in 2011. , the high-speed train derailment accident in Wenzhou, China in the same year, and the high-speed train derailment accident near Santiago, Spain in 2013. These train derailment accidents not only caused a large number of casualties, but also may cause major damage to the railway infrastructure, especially when the derailment accident occurs in a long underwater shield tunnel, the tunnel damage caused by the impact on the shield tunnel is very easy to induce Secondary disasters such as floods will increase the difficulty of rescue and the casualty rate, and in serious cases will lead to the tunnel being submerged and scrapped.

However, in order to study the dynamic response and failure behavior of the train derailment impacting the shield tunnel, it is necessary to obtain the train derailment impact load. At present, there is no measured train derailment impact load curve. The only research is to model the train formation through nonlinear finite element software, and then hit the rigid wall to obtain the impact of trains with different train formations, different impact speeds and different impact angles. Load time history curve. This numerical simulation method involves high-speed contact problems, complex numerical modeling, many simplified assumptions, and a large computational workload; in addition, the objective factors affecting train impact are very complex, and the curve of train derailment impact load obtained by theoretical simulation is consistent with the actual impact load. The deviation is large and the reliability is low.

Utility model content

The purpose of this utility model is to provide a train impact model test equipment, which can simulate the impact of train marshalling on the side wall of the tunnel at different speeds and different impact angles, and obtain the impact force of the train derailment impacting the tunnel, which is used for the anti-collision design of the tunnel. Provide more accurate and reliable test basis for construction and construction, thereby avoiding serious damage to the tunnel caused by train derailment and collision, and causing secondary disasters such as floods, so as to reduce casualties and losses caused by accidents.

The technical solution adopted by the utility model to solve its technical problems is characterized in that:

The middle part of the table is equipped with I-shaped steel for simulating the track, and the train marshalling model is installed on the I-shaped steel; there are wing plates on both sides of the front part of the train marshalling model, and an impact cylinder is fixed on the table directly behind the wing plate; the impact cylinder is connected with the air compressor connected;

An angle-adjustable rigid baffle simulating the side wall of the tunnel is fixed on the table in front of the train marshalling model, and a two-way force sensor is installed in the middle of the rigid baffle;

Two laser emitters are installed on the table on one side of the front part of the I-shaped steel, and two laser sensors are installed on the table on the other side of the front part of the I-shaped steel.

Using method and principle of the present utility model are:

Adjust and lock the rigid baffle to the set angle; then start the air compressor, and then start the impact cylinder when the air pressure of the air compressor reaches the set air pressure. The impact part of the impact cylinder hits the two side wing plates of the train formation model forward at high speed, so that the train formation model advances along the I-shaped steel track at high speed and hits the rigid baffle. At the same time, the laser transmitter and laser sensor at the front of the I-shaped steel measure the speed of the train formation model at the moment of impact, and the force sensor on the rigid baffle measures the impact force of the train formation model at the moment of impact.

By adjusting the angle of the rigid baffle and the air pressure of the air compressor, the impact force between the train and the tunnel can be measured at different impact angles and different operating speeds.

Compared with the prior art, the beneficial effects of the utility model are:

The utility model simulates the side wall of the tunnel through the rigid baffle plate with adjustable angle, drives the train formation model to advance at high speed through the impact cylinder, and realizes the similar simulation test of the train hitting the tunnel at high speed. At the same time, the running speed of the train formation model is accurately measured through the laser transmitter and the laser sensor, and the impact force of the train formation model at the moment of impact is measured through the force sensor on the rigid baffle. The experimental data of the impact force of the train derailment hitting the tunnel at different angles and speeds can be obtained through the simulation test. The experimental data obtained are more accurate and reliable than the theoretical simulation data, and provide more accurate and reliable test basis for the anti-collision design and construction of the tunnel, thereby avoiding serious damage to the tunnel caused by train derailment and impact, and secondary disasters such as floods. In order to reduce casualties and losses caused by accidents.

The above-mentioned train marshalling model is composed of 6 vehicle models, and the vehicle models are connected by springs.

Since the impact force time-history curve of the train formation is mainly related to the first 5-6 vehicles, the impact process time is extremely short, and the inertial force of the vehicles after the 7th vehicle formation is transmitted to the impact part through the spring between the vehicles is already in the impact process. In the latter stage, it is difficult to form a superimposed effect. Therefore, the train formation model composed of 6 vehicle models connected by springs can not only meet the requirements of simulating the impact force generated by train collisions in practice; The structure is simplified and the test cost is low.

The specific structure of the above-mentioned train marshalling model installed on the I-shaped steel is: both sides of the bottom of the vehicle model are fixed with L-shaped limit baffles folded inward, the bottom of the vehicle model is connected with upper universal rolling balls, and the L-shaped limit baffles are fixed on both sides. The upper surface of the horizontal plate of the position baffle is connected with the lower universal rolling ball, and the inner side of the vertical plate of the L-shaped limit baffle is connected with the anti-collision bearing; the I-shaped steel top plate is embedded in the upper universal rolling ball, the lower universal rolling ball and the Between anti-collision bearings.

This structure can ensure the high-speed movement of the train marshalling model on the I-shaped steel, which greatly reduces the friction with the I-shaped steel, which is more in line with the real relationship between the train and the track, and further ensures that the test data is more real ,reliable.

The specific structure of the above-mentioned rigid baffle is: the vertical rotating shaft on the table is inserted into the shaft cavity of the vertical steel plate, and the two sides of the back side of the steel plate away from the train marshalling model are welded with triangular stiffeners, and the screw rod of the locking bolt passes through the triangular The through groove at the bottom of the stiffener and the arc-shaped through-groove on the table are connected to the locking nut; the center of the arc-shaped through-groove is the axis of the vertical shaft.

In this way, the rigid baffle can be rotated arbitrarily through the vertical shaft and fixed by the locking bolt, so that any impact angle can be easily adjusted and set, which is consistent with the unpredictability of the angle of the train derailment hitting the inner wall of the tunnel in reality; choose the rigid baffle The purpose of the plate is to use its rigidity to ensure that the impact load obtained by the test does not vary due to the different materials of the baffle; the steel plate is away from the back of the train marshalling model and welded with triangular stiffeners on both sides to ensure the strength of the rigid baffle and protect it from being damaged. Train marshalling model crashes and shifts.

Below in conjunction with accompanying drawing and specific embodiment, the utility model is described in further detail.

Description of drawings

Fig. 1 is a top view structural diagram of an embodiment of the utility model.

Fig. 2 is a schematic diagram of a train marshalling model and an enlarged end face of an I-shaped steel according to an embodiment of the utility model.

detailed description

Example

Fig. 1 shows, a kind of embodiment of the present utility model is, a kind of train impact model test equipment, it is characterized in that:

The middle part of table top 1 places the I-shaped steel 14 of simulated track, and the train marshalling model 3 is installed on the I-shaped steel 14; The two sides of the front part of the train marshalling model 3 are provided with wing plates 15, fixed on the table top 1 just behind the wing plate 15 There is an impact cylinder 16; the impact cylinder 16 is connected with the air compressor 4;

The platform 1 in front of the train formation model 3 is fixed with an angle-adjustable rigid baffle 2 simulating the side wall of the tunnel, and a force sensor 11 is installed in the middle of the rigid baffle 2;

Two laser emitters 13a are installed on the table 1 on one side of the front part of the I-shaped steel 14, and two laser sensors 13b are installed on the table 1 on the other side of the front part of the I-shaped steel 14.

The train formation model 3 of this example is made up of 6 vehicle models, and is connected with spring 17 between the vehicle models.

Fig. 2 shows, the specific structure that the train marshalling model 3 of this example is installed on the I-shaped steel 14 is: the bottom both sides of the vehicle model are all fixed with inwardly folded L-shaped stop baffles 21, and the bottom of the vehicle model is connected with On the upper universal ball 20a, the upper surface of the horizontal plate of the L-shaped limit baffle 21 is connected with the lower universal ball 20b, and the inner side of the vertical plate of the L-shaped limit baffle 21 is connected with the anti-collision bearing 19; I-shaped steel 14 The top plate is embedded between the upper universal rolling ball 20a, the lower universal rolling ball 20b and the anti-collision bearing 19.

The vertical rotating shaft 2b on the platform 1 of this example is inserted in the axial cavity of the vertical steel plate 2a, and the two sides of the back side of the steel plate 2a away from the train marshalling model 3 are welded with triangular stiffeners 2c, and the screw rod of the locking bolt 2d passes through the triangular The through-slot 2f at the bottom of the stiffener 2c and the arc-shaped through-slot 7 on the table 1 are connected to the locking nut; the center of the circular-arc-shaped through-slot 7 is the axis of the vertical shaft 2b.

Claims (4)

1. A train impact model test equipment is characterized in that: The I-shaped steel (14) of simulated track is arranged in the middle part of the platform (1), and the train formation model (3) is installed on the I-shaped steel (14); the front both sides of the train formation model (3) are provided with wing plates (15 ), the table top (1) directly behind the wing plate (15) is fixed with an impact cylinder (16); the impact cylinder (16) links to each other with the air compressor (4); The platform (1) in front of the train marshalling model (3) is fixed with an angle-adjustable rigid baffle (2) that simulates the tunnel side wall, and a force sensor (11) is installed in the middle of the rigid baffle (2); The table (1) on one side of the front part of the I-shaped steel (14) is equipped with two laser emitters (13a), and the table (1) on the other side of the front part of the I-shaped steel (14) is correspondingly installed with two laser sensors. device (13b). 2. The train impact model test equipment according to claim 1, characterized in that, the train formation model (3) is made up of 6 car models, and the car models are connected with springs (17). 3. train impact model test equipment according to claim 2, is characterized in that, the concrete structure that described train marshalling model (3) is installed on the I-shaped steel (14) is: the bottom both sides of vehicle model are all fixed with Inwardly folded L-shaped stop baffle (21), the bottom of the vehicle model is connected with an upper universal ball (20a), and the upper surface of the horizontal plate of the L-shaped limit baffle (21) is connected with a lower universal ball ( 20b), the inner side of the vertical plate of the L-shaped limit baffle (21) is connected to the anti-collision bearing (19); the I-shaped steel (14) top plate is embedded in the upper universal rolling ball (20a), the lower universal rolling ball (20b ) and the anti-collision bearing (19). 4. The train impact model test equipment according to claim 1, characterized in that, the specific structure of the rigid baffle (2) is: the vertical shaft (2b) on the table (1) is inserted into the vertical In the shaft cavity of the steel plate (2a), a triangular stiffener (2c) is welded on both sides of the back of the steel plate (2a) away from the train marshalling model (3), and the screw rod of the locking bolt (2d) passes through the triangular stiffener (2c). The through groove (2f) on the bottom and the arc-shaped through-groove (7) on the table (1) are connected to the lock nut; the center of the circular-arc-shaped through-groove (7) is the axis of the vertical shaft (2b) .