CN-224216310-U - Reduction railway vehicle collision test device

CN224216310UCN 224216310 UCN224216310 UCN 224216310UCN-224216310-U

Abstract

The utility model provides a scaled railway vehicle collision test device which comprises a crashed test vehicle group, an active collision vehicle group, a straight track and a multi-source data acquisition system, wherein the crashed test vehicle group is formed by connecting a plurality of scaled test vehicles and is used for simulating crashed railway vehicles, the active collision vehicle group is formed by connecting a scaled drive vehicle and the scaled test vehicles and is used for simulating the active crashed railway vehicles, the straight track is a scaled track for bearing the crashed test vehicle group and the active collision vehicle group, and the multi-source data acquisition system comprises a speed sensor for measuring the crashed test vehicle group, an acceleration sensor for measuring the active collision vehicle group and a high-speed camera for shooting collision scenes. The utility model has strong repeatability and low requirement on the data acquisition device, greatly reduces the risk of the test, improves the test efficiency, saves the collision test space of the railway vehicle, and can guide the research on the collision resistance of the full-size railway vehicle.

Inventors

YANG CHAO
HU YUANJIE
XU NING
ZHOU YICHANG
YANG GUANGXUE
WANG BINJIE
WANG HAIJUN

Assignees

北京交通大学

Dates

Publication Date: 20260508
Application Date: 20250604

Claims (7)

1. A scaled rail vehicle crash test apparatus, comprising: the crashed test vehicle consists of a plurality of compression ratio test vehicles which are connected and are used for simulating crashed railway vehicles; The active collision vehicle consists of a scale driving vehicle and a scale testing vehicle which are connected, and is used for simulating an active collision railway vehicle; a straight track, which is a reduced scale track carrying the crashed test vehicle consist and an active crash vehicle consist; the multi-source data acquisition system comprises a speed sensor for measuring the crashed test vehicle group, an acceleration sensor for measuring the active crashed vehicle group and a high-speed camera for shooting crashing scenes.
2. The scaled rail vehicle crash test apparatus as claimed in claim 1, wherein the crashed test vehicle consist of two scaled test vehicles connected by a small coupler, each of the scaled test vehicles having two trailer bogies disposed at the bottom thereof.
3. The scaled rail vehicle crash test apparatus as recited in claim 2 wherein said active crash vehicle consist comprises a scaled drive vehicle supported by two power bogies and a scaled test vehicle, the vehicles being connected by a small coupler.
4. The device for testing the collision of the scaled railway vehicle according to claim 3, wherein the front end of the scaled driving vehicle is provided with a crushing tube, the front end of the crushing tube is matched with the collision end of the scaled testing vehicle, and the power bogie is connected with an electric control box so as to control the working mode of a driving motor of the power bogie.
5. The scaled rail vehicle crash test apparatus as set forth in claim 4, wherein said multi-source data acquisition system comprises: the speed sensor is arranged beside the straight track, and the detection direction of the speed sensor is aligned with the collision end of the crashed test vehicle group; The high-speed camera is arranged on the same side as the speed sensor, and the view finding range of the high-speed camera covers the whole collision area; The first acceleration sensor is arranged at the tail end of the crushing pipe, and the second speed sensor and the third speed sensor are symmetrically arranged on the vehicle body above the power steering frame.
6. The scaled rail vehicle crash test apparatus as claimed in claim 5, wherein the electronic control box is integrated with a programmable control board, and the scaled driving vehicle is controlled to reach and maintain a target crash speed through a preset control algorithm.
7. The device for the crash test of the scaled rail vehicle according to claim 5, wherein the speed sensor records the instantaneous speed of the scaled driving vehicle at the moment of the crash, the high-speed camera records the compression deformation of the crushing tube during the whole process of the crash, and the three acceleration sensors form a distributed measurement array, wherein a first acceleration sensor collects the axial impact acceleration of the crushing tube, and a second acceleration sensor and a third acceleration sensor synchronously collect the three-way vibration acceleration of the vehicle body of the scaled driving vehicle.

Description

Reduction railway vehicle collision test device Technical Field The utility model relates to the technical field of passive safety test of rolling stock, in particular to a scaled railway vehicle collision test device. Background At present, the passive safety performance research of the rail vehicles is an important subject in the field of rail transit, and the traditional collision test method mainly depends on two technical routes, namely a full-size real vehicle collision test, such as a rail train collision test system and a rail train collision test bed of a patent CN106441956B, wherein a hundred-meter-level test rail needs to be constructed, a large number of prototype vehicles are consumed, the single test cost is over the tens of millions of yuan, the defects of poor test repeatability, difficult parameter adjustment and the like exist, and the other method is a numerical simulation method based on finite element simulation, which can reduce the test cost, but has deviation in the aspects of simulation of key mechanical behaviors such as nonlinear response of materials, dynamic contact, structural buckling failure and the like. Therefore, the existing two methods have the problems of high cost, poor repeatability and inaccurate simulation of the collision test, so that a collision research method with low cost, high precision and good repeatability needs to be found. Disclosure of utility model The utility model aims to provide a scaled railway vehicle collision test device, which aims to solve the problems of high cost, poor repeatability and inaccurate finite element simulation of the existing full-size real vehicle collision test. The utility model provides a scaled railway vehicle collision test device, comprising: the crashed test vehicle consists of a plurality of compression ratio test vehicles which are connected and are used for simulating crashed railway vehicles; The active collision vehicle consists of a scale driving vehicle and a scale testing vehicle which are connected, and is used for simulating an active collision railway vehicle; a straight track, which is a reduced scale track carrying the crashed test vehicle consist and an active crash vehicle consist; the multi-source data acquisition system comprises a speed sensor for measuring the crashed test vehicle group, an acceleration sensor for measuring the active crashed vehicle group and a high-speed camera for shooting crashing scenes. Further improvement, the crashed test vehicle consist of two scaled test vehicles connected through the small-sized coupler, and two trailer bogies are arranged at the bottom of each scaled test vehicle. Further improvements are provided in the active crash vehicle consist comprising a scale drive vehicle supported by two power bogies and a scale test vehicle, the vehicles being connected by a small coupler. The power steering frame is connected with the electric control box so as to control the working mode of a driving motor of the power steering frame. Further improvements, the multi-source data acquisition system includes: the speed sensor is arranged beside the straight track, and the detection direction of the speed sensor is aligned with the collision end of the crashed test vehicle group; The high-speed camera is arranged on the same side as the speed sensor, and the view finding range of the high-speed camera covers the whole collision area; The first acceleration sensor is arranged at the tail end of the crushing pipe, and the second speed sensor and the third speed sensor are symmetrically arranged on the vehicle body above the power steering frame. Further improved, the electric control box is integrated with a programmable control board, and the scaling driving vehicle is controlled to reach and maintain the target collision speed through a preset control algorithm. The speed sensor records the instantaneous speed of the scaled driving vehicle at the moment of collision, the high-speed camera records the compression deformation of the crushing pipe in the whole collision process, and the three acceleration sensors form a distributed measurement array, wherein a first acceleration sensor collects the axial impact acceleration of the crushing pipe, and a second acceleration sensor and a third acceleration sensor synchronously collect the three-way vibration acceleration of the vehicle body of the scaled driving vehicle. The working process comprises the following steps: Step one, arranging a crashed test vehicle group and an active crash vehicle group to be respectively positioned at the test starting point position of the straight track, and ensuring that the axis of the crushing pipe is parallel to the central line of the track; Step two, the electric control box sets a target collision speed, controls the scaled driving vehicle to accelerate to the target speed and maintains stable operation; Step three, after the crushing tube collides with the test vehicle, crushing deformation occ