CN109799052A - A kind of testing stand of analog orbit travelled by vehicle portion vibration dynamics system - Google Patents
A kind of testing stand of analog orbit travelled by vehicle portion vibration dynamics system Download PDFInfo
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- CN109799052A CN109799052A CN201910114740.0A CN201910114740A CN109799052A CN 109799052 A CN109799052 A CN 109799052A CN 201910114740 A CN201910114740 A CN 201910114740A CN 109799052 A CN109799052 A CN 109799052A
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- pivoted arm
- testing stand
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- vehicle
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Abstract
The present invention relates to a kind of testing stands of analog orbit travelled by vehicle portion vibration dynamics system, comprising: testing stand upper layer and lower layer basic frame structure is used for analog orbit travelled by vehicle portion mechanical structure；Helical spring is used for analog orbit travelled by vehicle portion two stage suspension；Acceleration transducer, for acquiring Vertical Acceleration signal；Signal conditioner, for providing excitation power supply to acceleration transducer；Power amplifier applies exciting force to vibration excitor；Electromagnetic exciter is inputted for giving testing stand external drive for analog orbit irregularity；NI data collecting card is inputted and is acquired for signal.Compared with prior art, the present invention considers equipment installation cost and the influence to car operation, and data are acquired in actual vehicle inconvenience and time-consuming.Thus, the testing stand for establishing a vertical suspension of vehicle carrys out analog orbit vehicle suspension system, acquires and analyzes for data, to reach convenient, save, efficient purpose.
Description
Technical field
The present invention relates to a kind of vibration dynamics testing stands, vibrate more particularly, to a kind of analog orbit travelled by vehicle portion dynamic
The testing stand of mechanical system.
Background technique
For the safe operation of city rail vehicle, the real-time state monitoring and fault diagnosis of vehicle suspension system are extremely heavy
It wants.Now, by the fault detection to suspension critical component early period, can reduce vehicle component performance deteriorate suddenly and
Caused by vehicle fluctuation of service even major accident generation, substantially increase vehicle reliability of operation.It is to suspension
The system real-time status monitoring of critical component is also that the maintenance of vehicle is provided convenience, so that vehicle operation personnel need not be periodically to vehicle
Components are repaired and are maintained, but judge whether that it is necessary to overhaul according to the real-time running state of components.Pass through reality
When condition monitoring and fault diagnosis, the reliability of subway system operation can be significantly improved, increase vehicle transport ability it is same
When, also greatly reduce the unnecessary wasting of resources caused by periodic maintenance.Thus, city rail vehicle is transported at this stage
It is the real-time status monitoring and fault diagnosis of components to suspension in the case that the requirement of amount and safety in operation is gradually increased
With very high practical significance.And vehicle suspension system is the dynamic system of a higher-dimension complexity, system have it is more from
By spending, establishing its complete, accurate test model is clearly to be difficult to realize.In addition, it is contemplated that equipment installation cost and to vehicle
Operation influence.Thus, it establishes a mini-system similar with the vertical suspension dynamic behavior of vehicle and carries out parameter
The verification experimental verification of algorithm for estimating be very it is necessary to and it is significant.
Currently, that there are structures is single, installation is inconvenient for most of existing Mini-railway traffic test platforms, a variety of works cannot be simulated
Condition cannot be completed effectively the signal imitation of track irregularity, not can guarantee the various problems such as the accuracy of test data.
Summary of the invention
It is an object of the present invention to overcome the above-mentioned drawbacks of the prior art and provide a kind of analog orbit vehicles
The testing stand of EEF bogie vibration dynamics system.
The purpose of the present invention can be achieved through the following technical solutions:
A kind of testing stand of analog orbit travelled by vehicle portion vibration dynamics system, comprising:
Upper layer mechanical structure for simulating vehicle bogie: including first improve quality block, second improve quality block, right quality
Block and a pair of second helical spring.
Lower layer's mechanical structure for simulating vehicle bogie: including the first lower mass block, the second lower mass block and a pair
First helical spring.
Fixed connection apparatus: for being connected and fixed the upper layer mechanical structure and lower layer's mechanical structure of simulating vehicle EEF bogie；
Electric device, including upper power amplifier, lower power amplifier, NI data collecting card, signal conditioner, preceding electromagnetism
Vibration excitor, rear electromagnetic exciter, 4 acceleration transducers；
When the testing stand works, the corresponding track spectrum for receiving upper computer selecting is believed as the excitation of mechanical vibration test-bed
Number, the generation of analog signal is realized as signal generator by NI data collecting card, then be biased by signal conditioner
Voltage processing, obtains analog vibration signal, realizes Current Voltage negative-feedback by upper power amplifier and lower power amplifier, from
And applying an adjustable exciting force of constant magnitude to preceding electromagnetic exciter and rear electromagnetic exciter, two vibration excitors are realized to rail
The simulation of road irregularity, the application external drive to mechanical vibration test-bed, then 4 by being installed on testing stand acceleration
Sensor acquires the Vertical Acceleration signal of testing stand, and the data that NI data collecting card acquires acceleration transducer are sent
To host computer, to complete the acquisition of experimental data.
The fixed connection apparatus is fixed including a pair of of third helical spring, preceding pivoted arm, middle pivoted arm, rear pivoted arm, vibration excitor
Bracket and several bearing blocks for fixing pivoted arm；
The preceding pivoted arm is fixed by the first bearing seat and second bearing seat of the right and left, and then pivoted arm is by the right and left
3rd bearing seat and fourth bearing seat are fixed, and the middle pivoted arm is connect using spherical hinge connection type with right mass block, and two the
Three helical springs are respectively used to the company of preceding electromagnetic exciter and the first lower mass block, rear electromagnetic exciter and the second lower mass block
It connects.
It is open-type in the connection of the preceding pivoted arm and the first lower mass block and rear pivoted arm and the second lower mass block
Design: level and the vertical position of pivoted arm are adjusted by the depth of increase and decrease gasket or change nut.
Described first improve quality block, second improve quality block, the first lower mass block, the second lower mass block have been all made of one end and have been
Fixing end, the other end are the mode of the cantilever beam of free end.
The preceding pivoted arm and first bearing seat and second bearing seat, and rear pivoted arm and 3rd bearing seat and fourth bearing seat
It is all made of circular hole connection type.
The right mass block and middle pivoted arm use spherical hinge connection type.
The preceding pivoted arm and rear pivoted arm there are catenary motions, there are vertical and tumbling motions for the middle pivoted arm.
First helical spring and the second helical spring replace the spring of different-stiffness according to requirement of experiment to simulate not
Same type bogie.
The vibration exciter fixing support and corresponding electromagnetic exciter are vertical and laterally retain setting interval.
Compared with prior art, the invention has the following advantages:
1) test platform structure is simple and compact, sufficiently simulates rail vehicle from wheel to the structure to secondary suspension, by vehicle
The spring-mass block forced vibration model that suspension simplifies for four-degree-of-freedom, can effectively study the vibration in vertical direction.
2) it can be replaced according to requirement of experiment for the helical spring of analog orbit vehicle hanging structure, to simulate different type
Bogie, the experimental data of readily available multiplicity.
3) testing stand can accurate simulating vehicle bogie catenary motion state, collect the vertical vibration under different operating conditions
Dynamic acceleration information.
4) it joined the design of open-type in the coupling of testing stand upper and lower level pivoted arm and bearing block, the purpose is to pass through increase and decrease
Gasket or the depth for changing screw adjust level and the vertical position of pivoted arm, so that installation is more flexible, and ensure that experiment number
According to accuracy.
5) easy for installation for measuring the acceleration transducer of vertical vibration, and be directly connected to acquisition equipment, it simplifies
Data collection system.
6) the NI capture card that the testing stand uses, matched Labview software is connected with its institute, acquisition, place to data
Reason, analysis, storage are all more convenient.
7) pilot plant testing is not only economical quick, and clear in structure clear, and experimentation is easy to operate, working efficiency
Height, operating cost is low, and being can be with the multi-function experimental rig of simulating vehicle EEF bogie various working.
Detailed description of the invention
Fig. 1 is schematic view of the front view of the invention；
Fig. 2 is side structure schematic view of the invention；
Fig. 3 is overlooking structure diagram of the invention；
Fig. 4 is workflow schematic diagram of the invention；
In figure: 1, the first helical spring, the 2, second helical spring, 3, third helical spring, 4, first improves quality block, and 5,
Mass block once, 6, second improves quality block, the 7, second lower mass block, 8, right mass block, 9, upper power amplifier, 10, lower power
Amplifier, 11, NI data collecting card, 12, signal conditioner, 13, preceding vibration excitor, 14, rear vibration excitor, 15, preceding pivoted arm, 16, in
Pivoted arm, 17, rear pivoted arm, 18, first bearing seat, 19, second bearing seat, 20,3rd bearing seat, 21, fourth bearing seat, 22, swash
The fixed bracket of the device that shakes, 23, acceleration transducer.
Specific embodiment
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.The present embodiment is with technical solution of the present invention
Premised on implemented, the detailed implementation method and specific operation process are given, but protection scope of the present invention is not limited to
Following embodiments.
A kind of testing stand of analog orbit travelled by vehicle portion vibration dynamics system, comprising:
Upper layer mechanical structure for simulating vehicle bogie: including first improve quality block 4, second improve quality block 6, right matter
Gauge block 8 and a pair of second helical spring 2.
Lower layer's mechanical structure for simulating vehicle bogie: including the lower mass block 7 and one of the first lower mass block 5, second
To the first helical spring 1.
Fixed connection apparatus: for being connected and fixed the upper layer mechanical structure and lower layer's mechanical structure of simulating vehicle EEF bogie；
Electric device, including upper power amplifier 9, lower power amplifier 10, NI data collecting card 11, signal conditioner
12,14,4 preceding electromagnetic exciter 13, rear electromagnetic exciter acceleration transducers 23；
Wherein acceleration transducer 23 has selected the built-in IC pressure point acceleration sensing of Lanace LC-0110 according to test requirements document
Device.The sensor and conventional piezoelectric sensor are the difference is that charge amplifier is integrated in sensing by it, to realize
With being directly connected to for acquisition equipment, data collection system is simplified.The advantages of type sensor, is that output impedance is low, just dry
It disturbs, high reliablity, moisture resistance wet dust etc..LC0110 has the function of while measuring three directional accelerations, sensitivity be X to
100.1m V/g；Y-direction 99.5m V/g；Z-direction, 99.4m V/g.
Signal conditioner 12 has 16 channels.It is acted on other than providing excitation power supply to IC piezoelectric acceleration sensor,
Also there are bias voltage zeroing, the functions such as high and low pass filter, adjustment of sensitivity, and anti-interference strong, precision height, cost performance are high.Work
Make principle are as follows: signal conditioner provides 4m A, the constant current drive power supply of 24V to piezoelectric transducer and acquires vibration signal, passes through
It crosses signal conditioner and is biased voltage processing, obtain analog vibration signal.
Electromagnetic exciter has selected JZQ-5B type vibration excitor, the vibration excitor in conjunction with installation, cost performance etc. according to test requirements document
Any form of signal can be simulated, and the adjustable range of frequency of signal is larger, cooperation GF series wideband power amplification
Device, achievable general engineering test.
Power amplifier selects GF20-2 type amplidyne.Its working range is DC-20KHz, rated output
Power is 20VA.The type power amplifier can be realized the negative-feedback of current or voltage, and constant current and constant-voltage characteristic are preferable, therefore can be right
Vibration excitor applies an adjustable exciting force of constant magnitude.
NI data collecting card 11 acts on the hair for mainly including two aspects that and on the one hand realizing analog signal as signal generator
It is raw, the data that sensor acquires on the other hand are sent to host computer.Because we will realize that two vibration excitors are excited at the same time, and
Also the acquisition of multiple sensor data is realized, therefore data collecting card must have multichannel analog input and output function.
According to requirements above, the USB-6363 multifunctional data acquisition card of U.S. NI company is selected.
Helical spring is equipped with multiple, and occurs in pairs, for the two stage suspension mechanism of analog orbit vehicle, and connection electricity
Magnet exciter.
When the testing stand works, the corresponding track spectrum for receiving upper computer selecting is believed as the excitation of mechanical vibration test-bed
Number, the generation of analog signal is realized as signal generator by NI data collecting card 11, then carry out by signal conditioner 12
Bias voltage processing, obtains analog vibration signal, realizes that Current Voltage is negative by upper power amplifier 9 and lower power amplifier 10
Feedback, to apply an adjustable exciting force of constant magnitude to preceding electromagnetic exciter 13 and rear electromagnetic exciter 14, two are swashed
Simulation of the vibration device realization to track irregularity, the application external drive to mechanical vibration test-bed, then by being installed on testing stand
On 4 acceleration transducers 23 acquisition testing stand Vertical Acceleration signal, NI data collecting card 11 passes acceleration
The data that sensor 23 acquires are sent to host computer, to complete the acquisition of experimental data.
Fixed connection apparatus is solid including a pair of of third helical spring 3, preceding pivoted arm 15, middle pivoted arm 16, rear pivoted arm 17, vibration excitor
Fixed rack 22 and several bearing blocks for fixing pivoted arm；
Preceding pivoted arm 15 is fixed by the first bearing seat 18 and second bearing seat 19 of the right and left, and then pivoted arm 17 is by left and right two
The 3rd bearing seat 20 and fourth bearing seat 21 on side are fixed, and middle pivoted arm 16 is connect using spherical hinge connection type with right mass block 8,
Two third helical springs 3 are respectively used under preceding electromagnetic exciter 13 and the first lower mass block 5, rear electromagnetic exciter 14 and second
The connection of mass block 7.
It is open-type in the connection of preceding pivoted arm 15 and the first lower mass block 5 and rear pivoted arm 16 and the second lower mass block 7
Design: by increase and decrease gasket or change the depth of nut and adjust level and the vertical position of pivoted arm.So that installation is more clever
Living, in the mass block of the spring and different weight of coping with different length, which can guarantee that mass block is protected under stationary state
Water holding is flat, it is ensured that the accuracy of test data.
First improve quality block 4, second improve quality block 6, the first lower lower mass block 7 of mass block 5, second has been all made of one end and has been
Fixing end, the other end are the mode of the cantilever beam of free end, and its purpose is to follow " the constraint of wheel track to two stage suspension device
Vertically and horizontally move, decontrol catenary motion " kinetic character and design.
During block 5,7 of improving quality at two is connect with right mass block 8, gasket is used between mass block respectively and adds nut
Fixed form increases the stability of testing stand.
Preceding pivoted arm 15 and first bearing seat 18 and second bearing seat 19, and rear pivoted arm 17 and 3rd bearing seat 20 and the 4th
Bearing block 21 is all made of circular hole connection type, and its purpose is to realize the catenary motion of pivoted arm.
Right mass block 8 uses spherical hinge connection type with middle pivoted arm 16, and the effect of spherical hinge is exactly to realize upper layer mass block
Vertical and tumbling motion.
Its upper layer and lower layer mechanical structure for being used for simulating vehicle EEF bogie machine of testing stand shares 4 freedom degrees, respectively includes
The vertical and tumbling motion of the catenary motion and middle pivoted arm 16 of left-hand rotation arm 15 and right-hand rotation arm 17.
First helical spring 1 and the second helical spring 2 are used to simulating vehicle suspension arrangement, and can be according to requirement of experiment more
The spring of different-stiffness is changed, to simulate different type bogie.
Vibration exciter fixing support 22 and corresponding electromagnetic exciter are vertical and laterally retain setting interval, so that electromagnetic exciting
Device is interference-free when working.
As shown in Figure 1 to 4, vibration mechine mechanical structure component includes a pair of for the analog orbit bogie of car
The helical spring 1 of one system hangs, a pair are used for the helical spring 2 of analog orbit bogie of car secondary suspension, and a pair is used for
Connect the helical spring 3 of preceding vibration excitor 13 and rear vibration excitor 14.It further include the upper matter for constituting bogie upper layer mechanical structure
Gauge block 4, improve quality block 6 and right mass block 8 constitute lower mass block 5, the lower mass block 7, Yi Jitong of bogie lower layer mechanical structure
It crosses bearing block and nut is fixed on testing stand and goes forward pivoted arm 15, rear pivoted arm 17, be fixed on testing stand by spherical hinge and nut
Middle pivoted arm 16.Hardware components relevant to the testing stand include upper power amplifier 9, lower power amplifier 10 and NI number
It further include being individually positioned in two acceleration improved quality on block 4,6 in superstructure according to capture card 11 and signal conditioner 12
Spend sensor 23, in understructure, the acceleration transducer 23 being placed on respectively at two on lower mass block 5,7, for adopting
Collect Vertical Acceleration.
When the testing stand works, the pumping signal by the corresponding track spectrum of upper computer selecting as mechanical vibration test-bed,
The generation of analog signal is realized as signal generator by NI-USB6363 data collecting card 11, then is believed by LC02001-16
Number conditioner 12 is biased voltage processing, obtains analog vibration signal.It is real by GF20-2 type amplidyne 9,10
Existing Current Voltage negative-feedback, to apply an adjustable exciting force of constant magnitude to preceding vibration excitor 13, rear vibration excitor 14.Two
Vibration excitor realizes the simulation to track irregularity, the application external drive to mechanical vibration test-bed, then passes through and be installed on test
The Vertical Acceleration signal of 4 Lanace LC-0110 acceleration transducers 23 acquisition testing stand on platform, NI data collecting card
The data that acceleration transducer 23 acquires are sent to host computer by 12, to complete the acquisition of experimental data.
Claims (9)
1. a kind of testing stand of analog orbit travelled by vehicle portion vibration dynamics system characterized by comprising
Upper layer mechanical structure for simulating vehicle bogie: including first improve quality block (4), second improve quality block (6), right matter
Gauge block (8) and a pair of second helical spring (2).
Lower layer's mechanical structure for simulating vehicle bogie: including first lower mass block (5), second lower mass block (7) and one
To the first helical spring (1).
Fixed connection apparatus: for being connected and fixed the upper layer mechanical structure and lower layer's mechanical structure of simulating vehicle EEF bogie；
Electric device, including upper power amplifier (9), lower power amplifier (10), NI data collecting card (11), signal conditioner
(12), preceding electromagnetic exciter (13), rear electromagnetic exciter (14), 4 acceleration transducers (23)；
When the testing stand works, pumping signal of the corresponding track spectrum of upper computer selecting as mechanical vibration test-bed is received,
The generation of analog signal is realized as signal generator by NI data collecting card (11), then is carried out by signal conditioner (12)
Bias voltage processing, obtains analog vibration signal, realizes electric current electricity by upper power amplifier (9) and lower power amplifier (10)
Negative-feedback is pressed, to apply an adjustable exciting of constant magnitude to preceding electromagnetic exciter (13) and rear electromagnetic exciter (14)
Power, two vibration excitors realize the simulation to track irregularity, the application external drive to mechanical vibration test-bed, then pass through installation
In the Vertical Acceleration signal of 4 acceleration transducers (23) acquisition testing stand on testing stand, NI data collecting card
(11) data that acceleration transducer (23) acquire are sent to host computer, to complete the acquisition of experimental data.
2. a kind of testing stand of analog orbit travelled by vehicle portion according to claim 1 vibration dynamics system, feature
It is, the fixed connection apparatus includes a pair of of third helical spring (3), preceding pivoted arm (15), middle pivoted arm (16), rear pivoted arm
(17), vibration exciter fixing support (22) and several bearing blocks for fixing pivoted arm；
The preceding pivoted arm (15) is fixed by the first bearing seat (18) and second bearing seat (19) of the right and left, then pivoted arm (17)
Fixed by the 3rd bearing seat (20) and fourth bearing seat (21) of the right and left, the middle pivoted arm (16) uses spherical hinge connection side
Formula is connect with right mass block (8), and two third helical springs (3) are respectively used to mass block under preceding electromagnetic exciter (13) and first
(5), the connection of rear electromagnetic exciter (14) and second lower mass block (7).
3. a kind of testing stand of analog orbit travelled by vehicle portion according to claim 2 vibration dynamics system, feature
It is, under the preceding pivoted arm (15) and first in the connection of mass block (5) and rear pivoted arm (16) and second lower mass block (7)
For the design of open-type: by increase and decrease gasket or changing the depth of nut the level and the vertical position that adjust pivoted arm.
4. a kind of testing stand of analog orbit travelled by vehicle portion according to claim 1 vibration dynamics system, feature
Be, described first improve quality block (4), second improve quality block (6), first lower mass block (5), second lower mass block (7) are adopted
It is fixing end with one end, the other end is the mode of the cantilever beam of free end.
5. a kind of testing stand of analog orbit travelled by vehicle portion according to claim 1 vibration dynamics system, feature
It is, the preceding pivoted arm (15) and first bearing seat (18) and second bearing seat (19), and rear pivoted arm (17) and 3rd bearing
Seat (20) and fourth bearing seat (21) are all made of circular hole connection type.
6. a kind of testing stand of analog orbit travelled by vehicle portion according to claim 1 vibration dynamics system, feature
It is, the right mass block (8) and middle pivoted arm (16) use spherical hinge connection type.
7. a kind of testing stand of analog orbit travelled by vehicle portion according to claim 1 vibration dynamics system, feature
Be, the preceding pivoted arm (15) and rear pivoted arm (17) there are catenary motion, there are vertical and rolling fortune for the middle pivoted arm (16)
It is dynamic.
8. a kind of testing stand of analog orbit travelled by vehicle portion according to claim 1 vibration dynamics system, feature
It is, first helical spring (1) and the second helical spring (2) replace the spring of different-stiffness according to requirement of experiment to simulate
Different type bogie.
9. a kind of testing stand of analog orbit travelled by vehicle portion according to claim 2 vibration dynamics system, feature
It is, the vibration exciter fixing support (22) and corresponding electromagnetic exciter are vertical and laterally retain setting interval.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910114740.0A CN109799052A (en) | 2019-02-14 | 2019-02-14 | A kind of testing stand of analog orbit travelled by vehicle portion vibration dynamics system |
| CN201920746613.8U CN210464857U (en) | 2019-02-14 | 2019-05-21 | Test bed for simulating vibration dynamics system of running part of railway vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910114740.0A CN109799052A (en) | 2019-02-14 | 2019-02-14 | A kind of testing stand of analog orbit travelled by vehicle portion vibration dynamics system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109799052A true CN109799052A (en) | 2019-05-24 |
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ID=66562216
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910114740.0A Pending CN109799052A (en) | 2019-02-14 | 2019-02-14 | A kind of testing stand of analog orbit travelled by vehicle portion vibration dynamics system |
| CN201920746613.8U Expired - Fee Related CN210464857U (en) | 2019-02-14 | 2019-05-21 | Test bed for simulating vibration dynamics system of running part of railway vehicle |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920746613.8U Expired - Fee Related CN210464857U (en) | 2019-02-14 | 2019-05-21 | Test bed for simulating vibration dynamics system of running part of railway vehicle |
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| Country | Link |
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| CN (2) | CN109799052A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114088431A (en) * | 2021-11-18 | 2022-02-25 | 中车长春轨道客车股份有限公司 | Simulation device |
| CN116007964A (en) * | 2022-12-07 | 2023-04-25 | 中车工业研究院有限公司 | Verification device and method for vibration reduction control strategy of carrier |
-
2019
- 2019-02-14 CN CN201910114740.0A patent/CN109799052A/en active Pending
- 2019-05-21 CN CN201920746613.8U patent/CN210464857U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114088431A (en) * | 2021-11-18 | 2022-02-25 | 中车长春轨道客车股份有限公司 | Simulation device |
| CN116007964A (en) * | 2022-12-07 | 2023-04-25 | 中车工业研究院有限公司 | Verification device and method for vibration reduction control strategy of carrier |
Also Published As
| Publication number | Publication date |
|---|---|
| CN210464857U (en) | 2020-05-05 |
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