CN112082778A - Servo motor driven type driving system model train speed increasing device - Google Patents
Servo motor driven type driving system model train speed increasing device Download PDFInfo
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Abstract
The invention discloses a servo motor driven type running system model train accelerating device, which comprises a test section and a motor accelerating section, wherein the test section is arranged according to different differences of test contents, and the motor accelerating section comprises a servo motor driving system, an accelerating guide system, a linking track system, an adjustable supporting steel frame system and the like. The whole test device provides a safe and reliable train acceleration scheme and technical guarantee for the study of the driving test on the high-speed train bridge under the action of the earthquake.
Description
Technical Field
The invention relates to a model train accelerating device, in particular to a servo motor driven type model train accelerating device of a traveling system.
Background
The data shows that the mileage of railway operation in China reaches 13.1 kilometers by 2018, wherein 2.9 kilometers of high-speed rail occupy 66.3 percent of the total mileage of high-speed rail in the world, and the high-speed rail stably stays in the first place in the world. However, the construction and operation of the high-speed railway in China also face a plurality of challenges and dangers, such as complex geology, variable climate, prominent durability and behaviors over time, and the dynamic action of wind, earthquake and the like brings dangers to the construction and operation of the high-speed railway, wherein the potential danger of strong earthquake action is worth paying attention. The China is located in the Pacific earthquake zone, belongs to the countries with multiple earthquakes and has frequent earthquake activities. In recent decades, the earthquake is frequently damaged by strong earthquakes, such as the Wenchuan earthquake in 2008, the Qinghai Yushu earthquake in 2010, the Yaan earthquake in Sichuan in 2013 and the Kazaikou earthquake in Sichuan in 2017, the historical strong earthquakes cause serious economic loss and casualties to people in China, the life and property of people are greatly threatened due to the strong earthquake, and meanwhile, life line engineering such as railways and the like are damaged. The high-speed railway inevitably spans an earthquake zone or is built along the earthquake zone, so that the running probability of the high-speed train line is greatly increased when an earthquake occurs, and the research on the operation safety of the high-speed railway train under the action of the earthquake is necessary.
In practice, however, the importance of laboratory testing has been highlighted by the difficulty in planning when and how precious data of the vehicle is measured by actual jolts due to unpredictability of the earthquake and testing difficulties. The experimental study of the high-speed train bridge traveling under the earthquake has a plurality of difficulties, wherein the launching acceleration of the model train has a plurality of great technical difficulties. (1) How is a short-range efficient safe launch acceleration test model vehicle? Because the test model train has the characteristics of large mass and high speed, the kinetic energy contained in the train is extremely large, for example, 1: the scaling ratio of 10, the acceleration section similarity ratio is selected to be 1, the elastic modulus similarity ratio is selected to be 0.5, the prototype vehicle adopts CRH380A, the mass of the model vehicle is calculated to be about 500kg at the moment, the speed is about 20m/s, the conventional acceleration scheme needs a track which is long enough, but a laboratory is limited in site, the acceleration section is not long enough, and therefore a short-distance efficient acceleration scheme needs to be designed. (2) How can the test model train be transmitted without damage? The test model train has small scale ratio and high requirement on manufacturing precision, and various sensors are usually required to be arranged in the model train, so the manufacturing of the model train is time-consuming and costly, if the model train is accelerated and damaged in the test process, unnecessary economic loss can be caused, meanwhile, the test process can be delayed, and the problem that the mode train needs to be solved is to ensure that the manufactured precise test model train is not damaged. (3) How to join the acceleration and trial segments? The acceleration section is arranged on a test field, and the test section is arranged on an earthquake simulation vibration table; the model train does not vibrate at the shaking table in the acceleration process, the model train moves in the vertical and horizontal directions in the test after being placed on the platform, the acceleration section is static in the whole test process, the static acceleration section and the moving test section are connected, the model train is ensured to stably drive onto the test section, and meanwhile, the problem that the joint is not deformed greatly or even damaged to be solved is solved.
Based on the above, the invention provides a servo motor driven type running system model train speed-up device, which can solve the three problems. The device is provided with a semi-T-shaped hook guide rail for preventing the model train from overturning between an acceleration guide system and a model train workshop, so that the model train cannot be overturned and damaged in the acceleration process; the device adopts a servo motor driving system to accelerate the train, and a high-efficiency servo motor and a synchronous belt system are connected in series through a coupler, so that the acceleration distance can be effectively shortened, and the short-distance and high-efficiency launching acceleration model train is realized; meanwhile, a connection track system in the device is used as a transition section of the acceleration section and the test section, and the transition section and the test section are connected with a middle train track and a half T-shaped hook anti-overturning guide rail through a locking device, so that a model train in accelerated motion can always accurately enter the test section, the problem of centering of the acceleration section and the test section track is effectively avoided, and meanwhile, millisecond-level unlocking connection is carried out on the model train after the test section, and the test section track can be ensured not to be influenced by the acceleration track in the test process. The accelerating device can provide a powerful launching scheme and technical guarantee for the acceleration of the model train on the high-speed train bridge under the action of the earthquake for the relevant experimental research on the driving safety.
Disclosure of Invention
Aiming at the problems in the prior art, the invention aims to provide a servo motor driving type running system model train accelerating device which can provide technical support for test model train launching acceleration for relevant test research on running safety on a high-speed train bridge under the action of earthquake.
In order to achieve the technical purpose, the technical scheme of the invention is as follows: servo motor drive driving system model train accelerating device, whole device includes motor acceleration section and test section, the test section sets up according to the different differences of experimental content, in the testing process, before the model train that traveles at a high speed passes through earthquake simulation shaking table matrix test section, through the motor acceleration section, the motor acceleration section provides the primary power through accelerating motor, drive synchronous pulley belt system simultaneously and carry out the transmission of primary power, thereby realize the short distance of model train and accelerate fast. The whole test device provides a safe and reliable train acceleration scheme and technical guarantee for the study of the driving test on the high-speed train bridge under the action of the earthquake.
The invention also provides that the test section is arranged differently according to different test contents, for example, in a driving safety test on a high-speed train bridge under the action of an earthquake, the test section comprises a vibration table vibration system, a reduced-scale model bridge system, a reduced-scale model track system and the like.
The invention also provides that the motor acceleration section comprises a servo motor driving system, an acceleration guide system, a linking track system, a movable supporting steel frame system and the like.
The invention also provides that the servo motor driving system has the characteristics of high efficiency, high acceleration and the like, the high efficiency can enable the servo motor to provide sufficient power for the high-speed running of the model train, and the high acceleration can enable the model train to reach the running speed required by the test in a short time and a short distance; the servo motor driving system and the synchronous pulley belt system cooperatively accelerate the model train, the servo motor rotates to drive the pulley belt to move, and the pulley belt synchronously drives the model train to accelerate, so that the required test speed is achieved. The preferred scheme is that a Siemens servomotor 1PH8228 type is adopted, the rated rotating speed is 1150rpm, the rated torque is 1611Nm, and the rated power is 194 kW.
The invention also lies in that a synchronous belt system in the servo motor driving system is matched with the servo motor, the rated power of the servo motor is taken as the design power of the synchronous belt, and the tooth number and the bandwidth of the synchronous wheel and the synchronous belt which are adaptive to the action of the servo motor are calculated; a coupler with synchronism is selected for connection between the servo motor and the synchronous belt so as to ensure the consistency of the motion of the whole servo motor driving system.
The invention also discloses that the servo motor driving system drives the model train through the thrust plate at the upper part of the synchronous pulley belt, the thrust plate has enough rigidity and reasonable area, so that when the servo motor and the synchronous pulley belt system operate at high speed, the thrust plate has no deformation or small deformation, the model train cannot shake to influence the acceleration effect, the model train is prevented from colliding with other surrounding structural members, and the thrust plate has small mass in reasonable area so as to reduce energy consumption.
The invention also lies in that the thrust plate is positioned on the accelerating guide rail and pushes the model train to accelerate; the thrust plate consists of fixed plates at two sides, a hollow thrust plate and four groups of pulley blocks symmetrically distributed at two sides; the fixed plates on the two sides are fixed on the synchronous belt, the hollow thrust plate is directly contacted with the model train, the pulleys act on the accelerating guide rail, and the four pulleys on each side are distributed on the upper part and the lower part of the accelerating guide rail in pairs, so that the thrust plate is limited to synchronously move with the servo motor driving system in a specified range; the advantage of adopting thrust plate acceleration lies in that the model train is unlikely to take place the locomotive perk and the whereabouts phenomenon because the atress is uneven, can guarantee to accelerate the in-process model train steadily to can test the test section on the even running after the short distance acceleration process.
The invention also provides that the acceleration guide system consists of a thrust plate, a circular acceleration guide rail which is symmetrical up and down, a semi-T-shaped hook guide rail and a train track.
The invention also has the advantages that the circular accelerating guide rails which are symmetrical up and down are fixed on the movable supporting steel frame and distributed on the inner side of the synchronous pulley belt system, and the circular track can more safely and accurately limit the motion track of the thrust plate; the half T-shaped hook guide rails are distributed on the outer side of the train track and fixed on the track plate, and the half T-shaped hook guide rails are a protective measure for preventing the model train from overturning.
The invention also provides that the connection track system is a connection transition section of the motor acceleration section and the test section, and comprises a base plate, a track plate, a train track, a half T-shaped hook guide rail, a connection fastener, a servo hydraulic actuator, a synchronous locking device and the like.
One end of the linking track system is hinged on the movable supporting steel frame through a connecting component, and the other end of the linking track system is precisely butted with a response guide rail in the test section through a locking device; a servo hydraulic actuator is arranged below the connecting track, one end of the servo hydraulic actuator is hinged to the movable supporting steel frame, and the other end of the servo hydraulic actuator is hinged to the position below the connecting track close to the test section; synchronous locking device and servo hydraulic actuator outer chain control system, its control accuracy is the millisecond, in the twinkling of an eye through linking up the track when the whole automobile body of model train, synchronous locking device unblock, servo hydraulic actuator contracts simultaneously, drive and link up the track downstream, break away from with the test section, guarantee that the test section track does not receive the section of accelerating at the experimentation and influence, the synchronism and the accuracy of data acquisition in time can be guaranteed to the control accuracy of millisecond level, and waste valuable effective test time as far as possible.
The invention also provides a method for testing the train model, which is characterized in that bolt holes and groove guide rails are preset on the steel columns and the beams of the movable supporting steel frame, so that the positions of the servo motor, the synchronous belt system and the motor acceleration section can be adjusted according to test requirements, and the test model train can accurately, safely and stably enter a test section after accelerating to the required speed.
The invention also provides that the number and the positions of the synchronous belt system, the accelerating guide system and the connecting guide rail system of the whole motor accelerating section can be adjusted and arranged according to the test requirements, and the multi-motor accelerating sections can be arranged in parallel or in series.
The beneficial effects of the invention are as follows:
(1) short-distance efficient safe acceleration. The invention adopts a servo motor driving system with high efficiency and high acceleration to accelerate the model train, adopts the thrust plate to apply thrust, and adopts the T-shaped guard rail to prevent the model train from overturning and derailing, thereby ensuring that the model train can be accelerated safely with short distance and high efficiency.
(2) The millisecond level is controllable. Because the test model train functioning speed is high, and test section bridge structure length is effective for effective test time is about 2s in the experiment, and the waste of any time all is very cherish this moment, simultaneously, because the needs of experimental data processing, must guarantee the input of seismic wave, the collection of data, the measurement three of model train speed synchronous, therefore necessary control system that adopts the high accuracy. The invention designs a controllable acceleration thought of millisecond level: the high efficiency can enable the servo motor to provide sufficient power for the high-speed running of the model train, and the high acceleration can enable the model train to reach the running speed required by the test in a short time and a short distance; one end of the connection track system is hinged on the movable supporting steel frame through a connecting component, and the other end of the connection track system is precisely butted with a corresponding guide rail in the test section through a locking device; linking the track below and being provided with servo hydraulic actuator, servo hydraulic actuator one end articulates at portable support steelframe, the other end articulates in the linking track below that is close to the test section, synchronous locking device and servo hydraulic actuator outer chain control system, its control accuracy is the millisecond level, in the twinkling of an eye of the whole automobile body of model train process linking up the track, the unblock of synchronous locking device, servo hydraulic actuator shrink simultaneously, drive and link up the track downstream, break away from with the test section, guarantee that the test section track does not receive the section of accelerating influence in the process of the test. The millisecond-level control precision can ensure the synchronism and accuracy of data acquisition in time, and waste precious effective test time as little as possible.
(3) The arrangement is flexible. The whole motor acceleration section mainly comprises a servo motor driving system, an acceleration guiding system and a linking track system, the servo motor driving system, the acceleration guiding system and the linking track system are fixed with a movable supporting steel frame through bolts or connecting hinges, bolt holes and groove guide rails are reserved on the supporting steel frame, therefore, the number and the positions of the acceleration devices can be flexibly arranged according to test requirements, for example, when a double-line train parallel test is carried out, two pairs of motor acceleration devices can be symmetrically arranged in a left-right mode, and when a double-line train intersection test is carried out, two pairs of motor acceleration devices can be symmetrically arranged in a front-.
The invention is further described with reference to the following figures.
Drawings
FIG. 1 is a schematic view of an overall overview of an on-bridge test system;
FIG. 2 is an overview of an acceleration segment;
FIG. 3 is an exploded view of the acceleration section;
FIG. 4 is a detailed view of a servo motor drive system;
FIG. 5 is a detail view of the acceleration guidance system;
FIG. 6 is a detail view of the engagement track system;
FIG. 7 is a detailed view of the movable support steel frame;
FIG. 8 is a detail view of the acceleration guide;
wherein 1 is a servo motor driving system, which comprises a 101 servo motor, a 102 synchronous wheel, a 103 synchronous belt, a 104 coupler and a 105 driving wheel; 2, an acceleration guide system, which comprises a thrust plate 201, a circular acceleration guide rail 202, a semi-T-shaped hook guide rail 203, a train track 204, a track fastener 205 and a lateral stop block 206L; 3 is a model train; 4, a joint track system, which comprises a 401 supporting steel frame, a 402 connecting fastener, a 403 servo hydraulic actuator, a 404 locking device, a 405 base plate, a track plate, a 406 train track and a 407 semi-T-shaped hook guide rail; 5 is a movable supporting steel frame, which comprises 501 supporting cross beams, 502 supporting vertical beams, 503 supporting oblique beams, 504 reserved groove guide rails, 505 bottom fixing plates and 506 reserved bolt holes.
Detailed Description
The following further describes the present invention without limiting the content of the present invention.
FIG. 1 is a schematic view of a portion of an on-axle train test system, including only a test section and a train acceleration section closely connected thereto, wherein a model is required to have a certain speed before entering the test section during a test, and the acceleration section realizes safe, reliable and effective acceleration of the model train by arranging a servo motor driving system with millisecond control and a linked track system. Fig. 2 is an overall overview of the acceleration section of the train, fig. 3 is an exploded view of the acceleration section, and it can be seen from fig. 2 and 3 that the whole servo motor driven type running system model train speed increasing device mainly comprises a servo motor driving system 1, an acceleration guiding system 2, a model train 3, a joining track system 4, a movable support steel frame 5 and the like. The support system comprises seven rail support steel frames 5 and one motor support steel frame 5. Seven track supporting steel frames 5 are arranged below the track structure of the whole acceleration section, are used for fixing the servo motor driving system 1 and the acceleration guide system 2 at the same time, and a motor supporting steel frame 5 is arranged on the left side of the track supporting steel frame close to the connection track system 3 and is used for fixing the servo motor 101. The supporting steel frame comprises a supporting cross beam 501, a supporting vertical beam 502 and a supporting oblique beam 503, wherein groove guide rails 504 are reserved on the cross beam, the vertical beam and the oblique beam and are connected with each other through the groove guide rails. The steel frame 5 can be movably supported, the reserved bolt holes 506 on the bottom fixing plate 505 are connected with the whole bottom fixing plate through fastening bolts, and the position of the reserved bolt holes can be freely adjusted according to the test requirement. The servo motor driving system 1 includes a servo motor 101, a timing pulley 102, a timing belt 103, a coupling 104, a transmission wheel 105, and the like. Wherein servo motor 101 bed plate passes through fastening bolt 507 fixed connection on motor support steelframe 5, and synchronizing wheel 102 passes through shaft coupling 104 with servo motor 101 to be connected, and synchronizing wheel 102 and drive wheel 105 are fixed on track support steelframe 5, and hold-in range 103 passes through gear connection with synchronizing wheel 102, constitutes conveyer. The acceleration guide system 2 comprises a thrust plate 201, a circular acceleration guide rail 202, a half-T-shaped hook guide rail 203, a train track 204, a track fastener 205, an L-shaped lateral stop 206 and the like. The size of the hollow transverse plate of the thrust plate 201 is matched with the head of the test model train, the circular acceleration guide rail 202 is used for guiding the movement of the conveying device in the servo motor driving system 1 and is fixed on the rail support steel frame 5 through the groove guide rail 504, the L-shaped lateral stop 206, the half T-shaped hook guide rail 203, the train rail 204 and the rail fastener 205 are sequentially arranged on the rail plate through fastening bolts, and the half T-shaped hook guide rail 203 can play a role in preventing overturning of the test model train. The linking rail system 4 comprises a supporting steel frame 401, a connecting fastener 402, a servo hydraulic actuator 403, a locking device 404, a base plate, a rail plate 405, a train rail 406, a half T-shaped hook guide rail 407 and the like. Wherein, the base plate, track board 405 hinge joint is on supporting steelframe 401 through the support of connecting fastener 402 and servo hydraulic actuator 403, and train track 406 and half T type couple guide rail 407 and track fastener etc. are fixed to the track board through fastening bolt, and locking device 404 is located linking orbital forefront for with the track of test section to well, guarantee that test model train can not appear jumping the rail or even toppling when joining the track and getting into the test section. The servo motor driving type running system model train accelerating device has the advantages of being lossless in acceleration, controllable in millisecond level, unknown, controllable and the like, and can provide technical support for model train launching acceleration for relevant test research of high-speed train running safety under the action of earthquake.
Claims (13)
1. The utility model discloses a servo motor drive type driving system model train accelerating device, whole device is including test section and motor acceleration section, the test section sets up according to the different differences of experimental content, in the experimentation, before the model train that traveles at a high speed passes through earthquake simulation shaking table array test section, get into the motor acceleration section, the motor acceleration section provides the primary power through accelerating motor, drive synchronous pulley belt system simultaneously and carry out the primary power transmission, thereby realize the short distance of model train and accelerate fast. The whole test device provides a safe and reliable train acceleration scheme and technical guarantee for the study of the driving test on the high-speed train bridge under the action of the earthquake.
2. The servo motor driven traveling system model train speed raising device according to claim 1, characterized in that: the test section is arranged according to different test contents, for example, in a driving safety test on a high-speed train bridge under the action of an earthquake, the test section comprises a vibration table array system, a reduced scale model bridge system, a reduced scale model track system and the like.
3. The servo motor driven traveling system model train speed raising device according to claim 1, characterized in that: the motor acceleration section comprises a servo motor driving system, an acceleration guiding system, a connection track system, an adjustable support steel frame system and the like.
4. The servo motor driven traveling system model train speed raising device according to claim 1 or 3, characterized in that: the servo motor driving system has the characteristics of high efficiency, high acceleration and the like, the high efficiency can enable the servo motor to provide sufficient power for the high-speed running of the model train, and the high acceleration can enable the model train to reach the running speed required by the test in a short time and a short distance; the servo motor driving system and the synchronous belt system cooperate to accelerate the model train, the servo motor rotates to drive the belt to move, and the belt synchronously drives the model train to accelerate, so that the required test speed is achieved. The preferred scheme is that a Siemens servomotor 1PH8228 type is adopted, the rated rotating speed is 1150rpm, the rated torque is 1611Nm, and the rated power is 194 kW.
5. The servo motor driven type traveling system model train speed raising device according to claim 1, 3, or 4, characterized in that: a synchronous belt system in the servo motor driving system is matched with a servo motor, and the tooth number and the bandwidth of a synchronous wheel and a synchronous belt which are adaptive to the action of the servo motor are calculated by taking the rated power of the servo motor as the design power of the synchronous belt; the connection between the servo motor and the synchronous wheel belt should select a coupler with synchronism so as to ensure the movement consistency of the whole servo motor driving system.
6. The servo motor driven type traveling system model train speed raising device according to claim 1, 3, or 4, characterized in that: the servo motor driving system drives the model train through the thrust plate at the upper part of the synchronous pulley belt, the thrust plate has enough rigidity and reasonable area, and when the servo motor and the synchronous pulley belt system are guaranteed to operate at high speed, the thrust plate has no deformation or small deformation, so that the model train cannot shake to influence the acceleration effect, the model train is prevented from colliding other surrounding structural members, and the thrust plate is required to have small mass under the reasonable area so as to reduce energy consumption.
7. The servo motor driven type traveling system model train acceleration device according to claim 1, 3, 4, or 6, characterized in that: the thrust plate is positioned on the acceleration guide rail and pushes the model train to accelerate; the thrust plate consists of fixed plates at two sides, a hollow thrust plate and four groups of pulleys symmetrically distributed at two sides; the fixed plates on the two sides are fixed on the synchronous belt, the hollow thrust plate is directly contacted with the model train, the pulleys act on the accelerating guide rail, and the four pulleys on each side are distributed above and below the accelerating guide rail in pairs, so that the thrust plate is limited to synchronously move with the servo motor driving system in a specified range; the advantage of adopting thrust plate acceleration lies in that the model train is unlikely to take place the locomotive perk and the whereabouts phenomenon because the atress is uneven, can guarantee to accelerate the in-process model train steadily to can test the test section on the even running after the short distance acceleration process.
8. The servo motor driven traveling system model train speed raising apparatus according to claim 1 or 3, characterized in that: the acceleration guide system consists of a thrust plate, a circular acceleration guide rail which is symmetrical up and down, a semi-T-shaped hook guide rail and a train track.
9. The servo motor driven traveling system model train speed raising device according to claim 1, 3, or 8, characterized in that: the circular accelerating guide rails which are symmetrical up and down are fixed on the movable supporting steel frame and distributed on the inner side of the synchronous belt system, and the circular track can more safely and accurately limit the motion track of the thrust plate; the half T-shaped hook guide rails are distributed on the outer side of the train track and fixed on the track plate, and the half T-shaped hook guide rails are a protective measure for preventing the model train from overturning.
10. The servo motor driven traveling system model train speed raising device according to claim 1 or 3, characterized in that: the connection track system is a connection transition section of a motor acceleration section and a test section and comprises a base plate, a track plate, a train track, a half T-shaped hook guide rail, a connection fastener, a servo hydraulic actuator, a synchronous locking device and the like.
11. The servo motor driven type traveling system model train speed raising device according to claim 1, 3, or 10, characterized in that: one end of the connection track system is hinged on the movable supporting steel frame through a connecting component, and the other end of the connection track system is precisely butted with a response guide rail in the test section through a locking device; a servo hydraulic actuator is arranged below the connecting track, one end of the servo hydraulic actuator is hinged to the movable supporting steel frame, and the other end of the servo hydraulic actuator is hinged to the position below the connecting track close to the test section; synchronous locking device and servo hydraulic actuator outer chain control system, its control accuracy is the millisecond, in the twinkling of an eye when model train full automobile body is through linking up the track, synchronous locking device unblock, servo hydraulic actuator shrink simultaneously, drive and link up track downstream, break away from with the test section, guarantee that the test section track does not receive accelerating segment to influence at the experimentation, the synchronism and the accuracy of data acquisition in time can be guaranteed to the control accuracy of millisecond level, and waste valuable effective test time as far as possible.
12. The servo motor driven traveling system model train speed raising device according to claim 1 or 3, characterized in that: bolt holes and groove guide rails are preset on steel columns and cross beams of the movable supporting steel frames, and the positions of the servo motor, the synchronous belt system and the motor acceleration section can be adjusted according to test requirements, so that the test model train can accurately, safely and stably enter a test section after accelerating to a required speed.
13. The servo motor driven traveling system model train speed raising device according to claim 1, characterized in that: the number and the positions of the synchronous belt system, the accelerating guide system and the connecting guide rail system of the whole motor accelerating section can be adjusted and arranged according to test requirements, for example, when a double-line train parallel test is carried out, two pairs of motor accelerating devices can be symmetrically arranged left and right, and when a double-line train intersection test is carried out, two pairs of motor accelerating devices can be symmetrically arranged front and back.
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