CN105181494A - Model test air pressure loading apparatus simulating traffic load effect, and uses thereof - Google Patents
Model test air pressure loading apparatus simulating traffic load effect, and uses thereof Download PDFInfo
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- CN105181494A CN105181494A CN201510323504.1A CN201510323504A CN105181494A CN 105181494 A CN105181494 A CN 105181494A CN 201510323504 A CN201510323504 A CN 201510323504A CN 105181494 A CN105181494 A CN 105181494A
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Abstract
The invention relates to a model test loading apparatus simulating traffic load. The model test loading apparatus comprises an air compressor, a gas purification valve, an electrical proportional valve, a direct current voltage-stabilizing power supply, a function signal generator, a gas cylinder, a flange plate, gas pipes and metal conducting wires, wherein the air compressor, the gas purification valve, the electrical proportional valve and the gas cylinder are connected through the high-strength gas pipes, and the direct current voltage-stabilizing power supply, the function signal generator and the electric proportional valve are connected through the metal conducting wires. The present invention further discloses uses of model test loading apparatus, wherein the apparatus is used for power loading in the geotechnical model test in the transport and communication research field to match with the geotechnical test model box so as to carry out the test and simulate the power circulating loading of the traffic load on the geotechnical structure. The model test loading apparatus of the present invention has advantages of simple structure, easy operation, economy, practicality and the like.
Description
Technical field
The invention belongs to Communication and Transportation Engineering field, relate to a kind of model test charger of simulating action of traffic loading.
Background technology
In the kinetic stability model investigations such as the distortion of earth structure and intensity, often need simulation traffic loading to the power loading effect of earth structure.Traffic loading mainly refers to vehicle (train, automobile) run in put on roadbed, bridge, tunnel, power cycle load on the earthen structures such as slope retaining wall, be different from general static load, traffic loading is all with certain periodicity, and the cycle of traffic loading and cycle times difference larger, the traffic loading that different vehicle produces has respective feature, need to adopt different load waveforms to simulate, conventional load waveform has sine, cosine, zigzag, triangle, square, the waveforms such as pulsating wave, in addition also difference is larger for the load amplitude of different traffic loading, in addition earth structure is to the susceptibility of traffic loading comparatively strong (especially in the small scale dynamic model test of earth structure), therefore accurately must control traffic loading.
By finding the literature search of prior art, in existing device, or undertaken manually operatedly adding unloading by lifting jack, the feature of this loading method is that operating process is loaded down with trivial details, and load control accuracy is not high; Adopt hydraulic pressure or the mechanical hook-up of servocontrol instrument control, this method usually needs to be equipped with corresponding servocontrol instrument and hydraulic pump or servomotor, with high costs due to servocontrol instrument, hydraulic pump and servomotor, and load action power is comparatively large, the power not being suitable for small-scale model test loads.
Summary of the invention
The object of the present invention is to provide a kind of model test air pressure loading device of simulating action of traffic loading,
For solving the problems of the technologies described above, the technical solution used in the present invention is:
Simulate a model test charger for traffic loading, comprise air compressor, gas purification valve, electric Proportion valve, D.C. regulated power supply, function signal generator, cylinder, flanged plate, tracheae, plain conductor; Wherein air compressor, gas purification valve, electric Proportion valve, cylinder are connected by high strength tracheae; D.C. regulated power supply, function signal generator, electric Proportion valve are connected by plain conductor.
Further, by tracheae successively by air compressor, air purifying valve, electric Proportion valve connect gas port, cylinder connect, described cylinder by flanged plate be fixed on need load soil test model groove on; The signal earth end of D.C. regulated power supply, function signal generator, electric Proportion valve is connected successively with plain conductor.
The bowl cover place of described cylinder is connected with flanged plate, and described flanged plate adopts bolt and cylinder body to link together with fixing described cylinder, and air pressure is converted into dynamic load by described cylinder, is loaded by the cylinder piston pole pair geotechnical model of described cylinder.
Described cylinder connects gas port by tracheae connection electric Proportion valve, and described electric Proportion valve connects air purifying valve by tracheae, and described air purifying valve connects air compressor by high strength tracheae; Described gas purification valve filtration is circulated to the gas of electric Proportion valve to improve control accuracy and the serviceable life of described electric Proportion valve; Described electric Proportion valve regulates the air pressure exported according to the voltage signal of input, and the signal earth end of described electric Proportion valve is by plain conductor contiguous function signal generator.
Described air compressor is the power source of whole system, for system provides stable gaseous tension.This device is mainly based on pneumatic transmission principle, and stable gaseous tension is the working foundation of native system.
Described function signal generator is the control element of this device, and function signal generator can export the voltage signal of the waveforms such as sine function, cosine function, zigzag, triangle, square, pulsating wave, can select according to traffic loading feature.
Described electric Proportion valve can regulate output pressure according to the voltage signal of input, and voltage signal and air pressure are output into proportionate relationship.
Described cylinder is the executive component of this device, and air pressure regulates according to voltage signal by electrical equipment proportioning valve, and the air pressure after adjustment is converted into dynamic load by cylinder, realizes power-conversion.
Described tracheae is high strength tracheae, can bear air pressure and is not less than 1MPa; Preferably, described tracheae external diameter is 5mm, internal diameter is 3mm.
The purposes of described model test charger: the power be used for by this device in Communication and Transportation Engineering research field geotechnical model test loads, and coordinates geotechnological test model case to test, and simulation traffic loading loads the power cycle of earth structure.
Owing to adopting such scheme, the invention has the beneficial effects as follows:
This model test charger is based on pneumatic transmission principle, can be good at the power loading effect realizing simulating earth structure in small-scale model test, can select different Loaded contact analysis according to traffic loading feature, be quick on the draw, control accuracy is high, cheap; In addition, the present invention is by function restricting the number generator emitting voltage signal, and electric Proportion valve is regulated the stable air pressure that air compressor provides by voltage signal, finally by cylinder, gaseous tension is converted into Power output, there is principle simple, be easy to realize, loading accuracy advantages of higher.
Accompanying drawing explanation
Fig. 1 is the syndeton schematic diagram of each element in the embodiment of the present invention.
Fig. 2 is the method flow schematic diagram of the embodiment of the present invention.
Embodiment
Below in conjunction with accompanying drawing illustrated embodiment, the present invention is further illustrated.
As shown in Figure 1, the model test air pressure loading device that the present invention simulates action of traffic loading comprises: air compressor 1, air purifying valve 2, electric Proportion valve 3, cylinder 4, flanged plate 5, piston rod 6, D.C. regulated power supply 7, function signal generator 8, high strength tracheae 9, plain conductor 10.Adopt high strength tracheae 91,92 and 93 successively by air compressor 1, air purifying valve 2, electric Proportion valve 3 connect gas port, cylinder 4 connects, cylinder 5 is fixed on the soil test model groove that needs to load by flanged plate 6; The signal earth end of D.C. regulated power supply 7, function signal generator 8, electric Proportion valve 3 is connected successively with plain conductor 101,102.
The bowl cover place realizing the cylinder 4 of power conversion is connected with flanged plate 5, described flanged plate 5 adopts bolt and cylinder body to link together, the effect of described flanged plate 5 is fixed air cylinder 4, the effect of described cylinder 4 is air pressure to be converted into dynamic load, is loaded by cylinder piston rod 6 pairs of geotechnical models of described cylinder.
What cylinder 4 connected electric Proportion valve 3 by tracheae 93 connects gas port, and electric Proportion valve 3 connects air purifying valve 2 by tracheae 92, and air purifying valve 2 connects air compressor 1 by high strength tracheae 91.The effect of air compressor 1 is for whole charger provides stable air pressure, the gas being circulated to electric Proportion valve 2 is filtered in the effect of described gas purification valve 2, improve control accuracy and the serviceable life of described electric Proportion valve, the effect of described electric Proportion valve 3 regulates the air pressure exported according to the voltage signal of input, the signal earth end of described electric Proportion valve 3 is by plain conductor contiguous function signal generator 8, the effect of described function signal generator 8 is for electric Proportion valve 3 provides voltage signal, function signal generator 8 can send triangular wave, square wave, sinusoidal wave, pulsating wave, the voltage signal of single pulse ripple, and the frequency of often kind of waveform and amplitude all can regulate, described function signal generator 8 needs configuration D.C. regulated power supply.
The tracheae used in the present embodiment is high strength tracheae, and tracheae external diameter 5mm, tracheal diameter 3mm, can bear air pressure and be not less than 1MPa.
Fig. 2 is the operating process of apparatus of the present invention, and in the present embodiment, concrete operation step is as follows:
(1) system assembles
First each air pressure original paper and electronic original part are assembled according to shown in Fig. 1, described air pressure original paper comprises air compressor 1, air purifying valve 2, electric Proportion valve 3, cylinder and high-pressure air pipe 91,92,93, described electronic component comprises D.C. regulated power supply 7, function signal generator 8, electric Proportion valve 3 and plain conductor 101,102, need in air pressure original paper connection procedure to accomplish leak-tight gas phenomenon, cylinder is fixed on by flanged plate on the soil test model groove needing to load afterwards, accomplishes tight non-loosening.
(2) preparatory stage
Open D.C. regulated power supply 7 switch, and whether inspection apparatus normally can work; Connect the power supply of air compressor 1, air compressor by air compressing, for whole system provides air pressure.Adjustment function signal generator 8, signal waveform is selected according to the feature of studied traffic loading,
(3) load phase
Open the power switch of electric Proportion valve 3, electric Proportion valve 3 is regulated the gaseous tension exported by electronic signal, signal and the proportional relation of output pressure, be converted into dynamic load by cylinder 4 by the air pressure that electric Proportion valve 3 inputs, thus load test model.
Above-mentioned is can understand and apply the invention for ease of those skilled in the art to the description of embodiment.Person skilled in the art obviously easily can make various amendment to these embodiments, and General Principle described herein is applied in other embodiments and need not through performing creative labour.Therefore, the invention is not restricted to embodiment here, those skilled in the art, according to announcement of the present invention, do not depart from improvement that scope makes and amendment all should within protection scope of the present invention.
Claims (10)
1. simulate a model test charger for traffic loading, it is characterized in that: comprise air compressor, gas purification valve, electric Proportion valve, D.C. regulated power supply, function signal generator, cylinder, flanged plate, tracheae, plain conductor; Wherein air compressor, gas purification valve, electric Proportion valve, cylinder are connected by high strength tracheae; D.C. regulated power supply, function signal generator, electric Proportion valve are connected by plain conductor.
2. the model test charger of simulation traffic loading according to claim 1, is characterized in that:
By tracheae successively by air compressor, air purifying valve, electric Proportion valve connect gas port, cylinder connect, described cylinder by flanged plate be fixed on need load soil test model groove on; The signal earth end of D.C. regulated power supply, function signal generator, electric Proportion valve is connected successively with plain conductor.
3. the model test charger of simulation traffic loading according to claim 1, is characterized in that:
The bowl cover place of described cylinder is connected with flanged plate, and described flanged plate adopts bolt and cylinder body to link together with fixing described cylinder, and air pressure is converted into dynamic load by described cylinder, is loaded by the cylinder piston pole pair geotechnical model of described cylinder.
4. the model test charger of simulation traffic loading according to claim 1, is characterized in that:
Described cylinder connects gas port by tracheae connection electric Proportion valve, and described electric Proportion valve connects air purifying valve by tracheae, and described air purifying valve connects air compressor by high strength tracheae; Described gas purification valve filtration is circulated to the gas of electric Proportion valve to improve control accuracy and the serviceable life of described electric Proportion valve; Described electric Proportion valve regulates the air pressure exported according to the voltage signal of input, and the signal earth end of described electric Proportion valve is by plain conductor contiguous function signal generator.
5. model test charger according to claim 1, is characterized in that: described air compressor is the power source of whole system, for system provides stable gaseous tension.
6. model test charger according to claim 1, is characterized in that: described function signal generator is the control element of this device, selects to export different voltage signals according to traffic loading feature; Preferably, described voltage signal comprises the voltage signal of sine function, cosine function, zigzag, triangle, square, pulsating wave.
7. model test charger according to claim 1, is characterized in that: described electric Proportion valve is regulate output pressure according to the voltage signal of input.
8. model test charger according to claim 1, is characterized in that: described cylinder is executive component, and air pressure regulates according to voltage signal by electrical equipment proportioning valve, and the air pressure after adjustment is converted into dynamic load to realize power-conversion by described cylinder.
9., according to described model test charger arbitrary in claim 1,2 or 4, it is characterized in that: described tracheae is high strength tracheae, can bear air pressure and be not less than 1MPa; Preferably, described tracheae external diameter is 5mm, internal diameter is 3mm.
10. the purposes of arbitrary described model test charger in claim 1 to 8, it is characterized in that: the power be used for by this device in Communication and Transportation Engineering research field geotechnical model test loads, coordinate geotechnological test model case to test, simulation traffic loading loads the power cycle of earth structure.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510323504.1A CN105181494A (en) | 2015-06-12 | 2015-06-12 | Model test air pressure loading apparatus simulating traffic load effect, and uses thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510323504.1A CN105181494A (en) | 2015-06-12 | 2015-06-12 | Model test air pressure loading apparatus simulating traffic load effect, and uses thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107387481A (en) * | 2017-06-27 | 2017-11-24 | 北京航天动力研究所 | A kind of air pressure loading device for low temperature environment |
| CN108733904A (en) * | 2018-05-08 | 2018-11-02 | 同济大学 | A kind of rail traffic small scale test simulation loading method |
| CN109932196A (en) * | 2019-03-13 | 2019-06-25 | 浙江大学城市学院 | A kind of pneumatic loading system of portable simulation Subway Train Operation in Existed Subway |
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2015
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107387481A (en) * | 2017-06-27 | 2017-11-24 | 北京航天动力研究所 | A kind of air pressure loading device for low temperature environment |
| CN108733904A (en) * | 2018-05-08 | 2018-11-02 | 同济大学 | A kind of rail traffic small scale test simulation loading method |
| CN108733904B (en) * | 2018-05-08 | 2022-03-08 | 同济大学 | Rail transit small-scale test simulation loading method |
| CN109932196A (en) * | 2019-03-13 | 2019-06-25 | 浙江大学城市学院 | A kind of pneumatic loading system of portable simulation Subway Train Operation in Existed Subway |
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Application publication date: 20151223 |