CN207703498U - A kind of Wheel/rail Behavior modeling experimental rig - Google Patents

A kind of Wheel/rail Behavior modeling experimental rig Download PDF

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Publication number
CN207703498U
CN207703498U CN201721385629.8U CN201721385629U CN207703498U CN 207703498 U CN207703498 U CN 207703498U CN 201721385629 U CN201721385629 U CN 201721385629U CN 207703498 U CN207703498 U CN 207703498U
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rail
wheel
revolution
high speed
axis
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温泽峰
马启文
金学松
张卫华
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Southwest Jiaotong University
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Southwest Jiaotong University
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Abstract

The edge of a kind of Wheel/rail Behavior modeling experimental rig, revolution at a high speed disk upper surface is provided with a circle big groove, and the bottom of big groove is embedded with simulation sleeper, and the top for simulating sleeper is provided with little groove, and little groove is fitted into the flange of rail of rubber, rail successively from bottom to up;Rail flange of rail top both sides are equipped with simulation spring, and simulate spring and cover flange of rail top and sleeper simultaneously;Screw bolt passes simulation spring, simulation sleeper rear thread are fixed on the big groove bottom of revolution at a high speed disk;The axis connection that the left end of wheel drive motor shaft passes through high speed gearbox and Hooks coupling universal coupling and the simulating wheel right over revolution rail, the axis of simulating wheel is installed on by bearing on bearing block simultaneously, and the upper end of bearing block passes sequentially through transversely movable sliding rail, three-dimensional force displacement sensor, the Plumb load device connection on load door frame;The experimental rig more can really simulation reconstruction High-speed Wheel/Rail relationship and its damage feature, and easy to operate, high certainty of measurement, experimental data favorable reproducibility.

Description

A kind of Wheel/rail Behavior modeling experimental rig
Technical field
The utility model is related to a kind of Wheel/rail Behavior modeling experimental rigs.
Background technology
As the quick hair of China's economy is high-speed railway transportation increasingly has been favored by people.Train traction, operation And braking must be contacted by the rolling friction between wheel track and be realized, wheel rail system is the key components and parts of railway transportation, wheel track Relations problems are the critical issues in railway transportation technology, and countries in the world especially railway developed country has put into a large amount of manpower The research of wheel rail relation problem is carried out with financial resources.
Wheel pair between track to be in rolling contact behavior sufficiently complex:Left and right wheel track Bearing pattern interacts, and special is several What type face, wheel to the high speed scroll of opposite rail and sliding, the malformation of wheel pair and track, Wheel Rail Contact surface roughness and Third medium (Ru Shui, oil, sand, leaf etc.), wheel rail material defect and the wheel rolling material ratcheting in the case where rolling repeatedly, axis The factors such as weight, speed have an impact wheel rail contact mechanics behavior.In Wheel Rail Contact contact theory model and numerical method, entirely Portion consider these factors, and then to wheel rail contact mechanics behavior make comprehensively and accurately analysis and research there are sizable It is difficult.The test and analysis of wheel rail contact mechanics behavior can only be completed by experiment.Although circuit service test has higher Reliability, but the duration is long, expensive, is influenced on normal railway operation big while also uncontrollable with condition.It is indoor Simulation test can be controlled with condition, also the factor of many complexity can be carried out independent control, to obtain it is more accurate, Detailed wheel rail contact mechanics behavior and wheel track hurt data;To be provided reliably for the safe and reliable operation of railway transportation Test data.Existing simulation laboratory test device is simulated using a wheel of a wheel simulating wheel on top, lower part Rail;By two wheels to rolling, the rolling behavior of wheel track is simulated, and then measure wheel rail contact mechanics behavioral data.It exists The problem of be:Shape, fixed form and the material that the wheel of rail is simulated in lower part are different from true rail, it is caused to measure Wheel rail contact mechanics behavior and wheel track hurt data, error is big, poor reliability.
Utility model content
The purpose of this utility model is to provide a kind of Wheel/rail Behavior modeling experimental rig, which rolls wheel track The simulation of dynamic behavior is truer, and the Wheel/rail behavior relation and wheel track hurt measured is more acurrate, reliable, and then can be wheel track Design is prepared and is safeguarded, provides relatively reliable test basis.
The utility model realizes its purpose of utility model the technical scheme adopted is that a kind of Wheel/rail Behavior modeling tries Experiment device, composition are:
The top of rail bed is equipped with rail turning motor, and the right end of rail turning motor axis connects photoelectric encoder One;The lower end phase that the left end of rail turning motor axis passes through revolution gearbox and vertical revolution shaft coupling on rail bed Even, the upper end for turning round shaft coupling connects with the lower end of revolution at a high speed axis;Revolution at a high speed disk is installed in the middle part of revolution at a high speed axis, it is high The upper end of fast rotating shaft is connect by bearing with supporting rack, and supporting rack is by upright supports in ground;Revolution at a high speed disk upper surface Edge be equipped with a trap conjunction rail;
The concrete structure of rail that the edge of the revolution at a high speed disk upper surface is equipped with trap conjunction is:The height The edge of fast rotary disk upper surface is provided with a circle big groove, and the bottom of big groove is intermittently embedded with simulation sleeper, simulates sleeper Top is provided with little groove, and little groove is fitted into the flange of rail of rubber, rail successively from bottom to up;Rail flange of rail top both sides are equipped with mould Quasi- spring, and simulate flange of rail top and sleeper that spring covers rail simultaneously;After screw bolt passes simulate spring, simulation sleeper It is screwed on the big groove bottom of revolution at a high speed disk;
Rotatable rotation seat is installed on the top of wheel mounting base, and wheel drive motor is installed on the right side on rotation seat top, The right end of wheel drive motor shaft connects photoelectric encoder two;The left end of wheel drive motor shaft passes through gearbox and universal joint shaft The axis connection of device and simulating wheel;The axis of simulating wheel is installed on by bearing on bearing block simultaneously, and the upper end of bearing block is successively It is connect with load door frame by transversely movable sliding rail, three-dimensional force displacement sensor and Plumb load device;It loads door frame and turns Fixed frame connection on dynamic seat;Sliding rail is connect by hydraulic cylinder with fixed frame.
The working process and principle of the utility model are:
Wheel drive motor is connect with simulating wheel by Hooks coupling universal coupling, keeps simulating wheel dynamic along its shaft rotation, Simulating wheel is whole simultaneously can deviate and rotate in all directions in a certain range again;Make wheel in axial rotation, it can Apply vertical and laterally load, and vertical and lateral load is independent of each other.
When work, first open rail turning motor and wheel drive motor respectively drive annular rail and simulating wheel by Setting speed uniform rotation;Start Plumb load device, simulating wheel is driven by three-dimensional force displacement sensor, sliding rail, bearing block It moves down, simulating wheel is made to be contacted with rail, Wheel/rail behavior is generated between simulating wheel and rail.
Again by Plumb load device, apply vertical load and the vibration of setting to simulating wheel, to simulate train fortune respectively Wheel vertical vibration caused by vertical wheel rail force (light weight) and track longitudinal direction irregularity when row.Start hydraulic cylinder and passes through cunning Rail, bearing block driving simulating wheel transverse shifting and the transverse load for applying setting, pass through various curve tracks to simulate train When wheel track lateral displacement and the cross forces such as centrifugal force.Meanwhile turn by adjusting rail turning motor and wheel drive motor Speed, you can simulate the different slippages of wheel track;Revolve the angle of rail rotation seat, you can the simulating wheel angle of attack different from rail, mould Draw up elbow curve radius when wheel turning.Row is rolled to completely simulate the contact under various operating modes between High-speed Wheel/Rail For.
During experiment, acquire and transmit by three-dimensional force displacement sensor simulation wheel track be subject to vertical force, cross force, Tangential force.After the completion of experiment, by being further processed to collected data, you can test analysis obtains the wheel under different operating modes Rail contact relation;The abrasion of simulating wheel and rail can be also further analyzed simultaneously.
Compared with prior art, the utility model has the beneficial effects that:
One, rail is discretely supported through bolt and is fixed on revolution at a high speed disk by simulating spring, rubber, simulation sleeper It simulates on sleeper, the connection on the sleeper of railway roadbed is fixed on through the discrete support of bolt by spring, rubber pad with true rail Structure is more approached.Wheel/rail behavior when not only reflecting at support without bending stress and the shadow to wheel rail material military service performance Ring, also reflect rail at non-supported (bolt interval) bend stress when Wheel/rail behavior and be on active service to wheel rail material The influence of performance so as to more true simulation, reproduces High-speed Wheel/Rail contact rolling behavior and damage feature, and test result is more Accurately, reliably.And then can be design, preparation and the maintenance of wheel track, relatively reliable, accurate test basis is provided.
Two, the vertical wheel rail force (light weight), track when the utility model can simulate train operation are longitudinal uneven Along caused wheel vertical vibration, the cross forces such as wheel track lateral displacement and centrifugal force when train is by various curve tracks, wheel The different slippages of rail, the various operating modes such as elbow curve radius when wheel is turned.It is each so as to more comprehensively, more completely test out Under kind operating mode, the contact rolling behavior between High-speed Wheel/Rail.
Three, it is connected with photoelectric encoder on the axis of rail turning motor, wheel drive motor, motor can be accurately surveyed The rotating speed of amount and feedback control, simulating wheel and rail mimic panel is accurate so that measurement data is more accurate, reliable with result.
Further, counter-force support base is fixed on the left of the wheel mounting base of the utility model, the axis of counter-force support wheel is logical It crosses bearing to be installed on the bearing block of counter-force support base, and the apical margin of counter-force support wheel and revolution at a high speed are tried to get to the heart of a matter and connect on the right side of face It touches.
In this way, the right side of revolution at a high speed disk, when bearing vertical load, counter-force support base and counter-force support wheel will not hamper It under the premise of hindering revolution at a high speed disk to rotate, can play a supporting role to revolution at a high speed disk, prevent the inclination of revolution at a high speed disk from moving down.Into One step ensure that the accurate, reliable of experiment, while also improve the service life of the experimental rig of the utility model.
The lower surface of the supporting rack of further the utility model is equipped with rail grinding machine for grinding rails, and rail grinding machine for grinding rails It faces left positioned at revolution at a high speed the surface of the rail of side.
In this way, after rail damages, it can be repaired, new experiment, a steel can be carried out after reparation Rail can carry out test of many times, reduce experimentation cost.
The utility model is described in further detail with reference to the accompanying drawings and detailed description.
Description of the drawings
Fig. 1 is the main structure diagram of the utility model embodiment.
Fig. 2 is the overlooking structure diagram of the utility model embodiment.
Fig. 3 is the B-B profiles of Fig. 2.
Fig. 4 is the C-C profiles in Fig. 2.
Specific implementation mode
Embodiment
A kind of specific implementation mode of the utility model is a kind of Wheel/rail Behavior modeling experimental rig, and composition is:
Referring to Fig. 1, Fig. 2, the top of rail bed 10 is equipped with rail turning motor 11, the right side of 11 axis of rail turning motor End one 11a of connection photoelectric encoder;The left end of 11 axis of rail turning motor by revolution gearbox 12 on rail bed 10 with The lower end of vertical revolution shaft coupling 13 is connected, and the upper end of revolution shaft coupling 13 connects with the lower end of revolution at a high speed axis 14;At a high speed The middle part of rotating shaft 14 is equipped with revolution at a high speed disk 15, and the upper end of revolution at a high speed axis 14 is connect by bearing with supporting rack 16, branch Support 16 is supported in ground by column 16a;The edge of 15 upper surface of revolution at a high speed disk is equipped with the rail 17 of trap conjunction.
Fig. 3 and Fig. 2, Fig. 4 show that the edge of 15 upper surface of revolution at a high speed disk is equipped with the rail 17 of trap conjunction Concrete structure be:The edge of 15 upper surface of revolution at a high speed disk is provided with a circle big groove 15a, the bottom of big groove 15a Intermittently be embedded with simulation sleeper 18, the top of simulation sleeper 18 is provided with little groove, little groove be fitted into successively from bottom to up rubber 19, The flange of rail of rail 17;17 flange of rail top both sides of rail are equipped with simulation spring 20, and simulate spring 20 and cover rail 17 simultaneously Flange of rail top and sleeper 17;Bolt 21 sequentially passes through simulation spring 20, simulation 18 rear thread of sleeper is fixed on revolution at a high speed disk 15 The bottoms big groove 15a;
Fig. 1-2 shows that rotatable rotation seat 31, the right side peace on 31 top of rotation seat are installed in the top of wheel mounting base 30 Wheel-mounted driving motor 32, two 32a of right end connection photoelectric encoder of 32 axis of wheel drive motor;32 axis of wheel drive motor The left end axis connection that passes through gearbox 33 and Hooks coupling universal coupling 34 and simulating wheel 35;The axis of simulating wheel 35 passes through simultaneously Bearing is installed on bearing block 36, and the upper end of bearing block 36 passes sequentially through transversely movable sliding rail 37, three-dimensional force displacement sensing Device 38 and Plumb load device 40 are connect with load door frame 39;Load door frame 39 is connect with the fixed frame 41 on rotation seat 31;Sliding rail 37 are connect by hydraulic cylinder 37a with fixed frame 41.
Fig. 1 shows that the left side of the wheel mounting base 30 of this example is fixed with counter-force support base 50, the axis of counter-force support wheel 51 It is installed on the bearing block 52 of counter-force support base 50 by bearing, and the apical margin of counter-force support wheel 51 and 15 bottom surface of revolution at a high speed disk Right contact.
Fig. 1 shows that the lower surface of the supporting rack 16 of this example is equipped with rail grinding machine for grinding rails, and rail grinding machine for grinding rails is located at height The surface of the rail 17 in 15 left side of fast rotary disk.
When the utility model is implemented, simulating wheel 35 and rail 17 respectively by true wheel steel and rail steel making and At, in this way can more true simulation reconstruction High-speed Wheel/Rail material damage feature.
The rotational structure of the rotation seat 31 of the utility model can be various existing rotating mechanisms, such as:In rotation seat 31 The vertical axis of bottom is installed in the axis hole of wheel mounting base 30.And it can be equipped with across 31 arc of rotation seat in wheel mounting base 30 The positioning screw of shape slot, nut is tightened in the setting of positioning screw upper end, to realize the rotation and positioning of rotation seat 31.

Claims (3)

1. a kind of Wheel/rail Behavior modeling experimental rig, composition are:
The top of rail bed (10) is equipped with rail turning motor (11), and the right end of rail turning motor (11) axis connects photoelectricity Encoder one (11a);The left end of rail turning motor (11) axis by revolution gearbox (12) on rail bed (10) with it is perpendicular The lower end of straight revolution shaft coupling (13) is connected, and the upper end of revolution shaft coupling (13) connects with the lower end of revolution at a high speed axis (14); Revolution at a high speed disk (15) is installed, the upper end of revolution at a high speed axis (14) passes through bearing and supporting rack in the middle part of revolution at a high speed axis (14) (16) it connects, supporting rack (16) is supported in ground by column (16a);The edge of revolution at a high speed disk (15) upper surface is equipped with one The rail (17) that trap is closed;
The concrete structure of rail (17) that the edge of described revolution at a high speed disk (15) upper surface is equipped with trap conjunction is:It is described The edge of revolution at a high speed disk (15) upper surface be provided with a circle big groove (15a), the bottom of big groove (15a) is intermittently embedded with mould The top of quasi- sleeper (18), simulation sleeper (18) is provided with little groove, and little groove is fitted into rubber (19), rail successively from bottom to up (17) the flange of rail;Rail (17) flange of rail top both sides are equipped with simulation spring (20), and simulate spring (20) while covering rail (17) flange of rail top and sleeper (18);Bolt (21) sequentially passes through simulation spring (20), simulation sleeper (18) rear thread is fixed Bottom big groove (15a) in revolution at a high speed disk (15);
Rotatable rotation seat (31) is installed on the top of wheel mounting base (30), and the right side installation wheel on rotation seat (31) top passes Dynamic motor (32), the right end connection photoelectric encoder two (32a) of wheel drive motor (32) axis;Wheel drive motor (32) axis The axis connection that left end passes through gearbox (33) and Hooks coupling universal coupling (34) and simulating wheel (35);The axis of simulating wheel (35) is simultaneously Be installed on bearing block one (36) by bearing, the upper end of bearing block one (36) pass sequentially through transversely movable sliding rail (37), Three-dimensional force displacement sensor (38) and Plumb load device (40) are connect with load door frame (39);Load door frame (39) and rotation seat (31) fixed frame (41) connection on;Sliding rail (37) is connect by hydraulic cylinder (37a) with fixed frame (41).
2. a kind of Wheel/rail Behavior modeling experimental rig according to claim 1, it is characterised in that:The wheel peace It is fixed with counter-force support base (50) on the left of dress seat (30), the axis of counter-force support wheel (51) is installed on counter-force support base by bearing (50) on bearing block two (52), and the right contact of the apical margin of counter-force support wheel (51) and revolution at a high speed disk (15) bottom surface.
3. a kind of Wheel/rail Behavior modeling experimental rig according to claim 1, it is characterised in that:The supporting rack (16) lower surface is equipped with rail grinding machine for grinding rails (6), and rail grinding machine for grinding rails (6) is located at the steel on the left of revolution at a high speed disk (15) The surface of rail (17).
CN201721385629.8U 2017-10-25 2017-10-25 A kind of Wheel/rail Behavior modeling experimental rig Active CN207703498U (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107917817A (en) * 2017-10-25 2018-04-17 西南交通大学 Wheel/rail Behavior modeling testing stand
CN113607444A (en) * 2021-07-26 2021-11-05 燕山大学 High-speed heavy-duty train wheel rail profile friction wear and rolling contact fatigue test device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107917817A (en) * 2017-10-25 2018-04-17 西南交通大学 Wheel/rail Behavior modeling testing stand
CN107917817B (en) * 2017-10-25 2024-01-26 西南交通大学 Wheel rail rolling behavior simulation test bed
CN113607444A (en) * 2021-07-26 2021-11-05 燕山大学 High-speed heavy-duty train wheel rail profile friction wear and rolling contact fatigue test device
CN113607444B (en) * 2021-07-26 2022-04-19 燕山大学 High-speed heavy-duty train wheel rail profile friction wear and rolling contact fatigue test device

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