CN202523296U - Simulator for demonstrating liquefaction of sand - Google Patents
Simulator for demonstrating liquefaction of sand Download PDFInfo
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- CN202523296U CN202523296U CN2012201614257U CN201220161425U CN202523296U CN 202523296 U CN202523296 U CN 202523296U CN 2012201614257 U CN2012201614257 U CN 2012201614257U CN 201220161425 U CN201220161425 U CN 201220161425U CN 202523296 U CN202523296 U CN 202523296U
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- sand
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- excentric shaft
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Abstract
The utility model discloses a simulator for demonstrating liquefaction of sand, aiming to provide the simulator which is simple in structure and capable of simulating the liquefaction of sand under earthquakes of different levels so as to further propagandize hazards of the liquefaction of sand and common sense of meeting emergencies and preventing disasters, and improve the consciousness of people on preventing and reducing disasters. The utility model has a technological key point that the simulator is characterized in that a building (12) is located on a sand box (13) filled with sand-water mixtures (14), and a shaking device is arranged below the sand box (13) and comprises a stepping motor (1), an eccentric shaft assembly (2), an oscillating bar assembly (4), a guiding assembly (5), a sliding assembly (10), and a circuit combined element device (11), wherein the circuit combined component device (11) is composed of a direct-current power supply, a touch screen singlechip microcomputer and a stepping driver.
Description
Technical field
The utility model relates to a kind of demonstration liquefaction of sand analogue means.
Background technology
Earthquake can cause multiple disaster: earthquake fire, landslide, liquefaction of sand, objectionable impurities leakage and pollution, pestilence etc.Under the violent earthquake effect, be in the sand below the underground water table, obvious variation possibly take place in its character, causes its performance to have spy's card of similar liquids, and this phenomenon people are referred to as sand liquefaction disaster phenomenon.The sand liquefaction disaster directly influences developing rapidly of China's city-building, is an important link of work such as we carry out seismic safety evaluation, provide fortification against earthquakes, prediction of earthquake calamity.The earthquake from Tangshan, Osaka earthquake, the Hua-lien earthquake, the disastrous earthquake that Turkey's earthquake etc. is taken place in recent decades, sand liquefaction brings disaster very widely to the mankind.
One, the macroscopic appearance of sand liquefaction:
1, water is emitted in sandblast, and this is a most significantly macroscopic view sign of sand liquefaction, and the liquid of it and pressurized is the same; Liquefied sand can be from covering the ground of emerging, weak place under the pressure of upper soil horizon, and the serious place of water is emitted in sandblast; Large stretch of farmland and crops are flowed or blow over and cover completely, channel, and well is become silted up.
2, bunding slump, the river meets with and highway, and the gutter overlayer of railway is relatively weaker, and the layer of sand here more is prone to liquefy; Owing to have free face to exist, often cause the river high, the dike bank; Roadbed produces depression, crack and slump, and make bridge or other facility produce havoc.
3, ground cracking sinks, and the sand of liquefaction often is sprayed onto ground from ground fissure, and on the other hand, sand liquefaction also tends to aggravate the ground cracking, and the layer of sand of liquefaction is the aggravation superstructure destruction of deposition again.
Two, the geologic background of sand liquefaction
Sand liquefaction occurs in underground, is to be closely connected together with certain geologic condition, under certain geological process and geologic background, can liquefy, and scale, the earthquake weight, all with the type of soil, state has substantial connection.A large amount of examples prove that the water serious area is emitted in sandblast, and underground water table is generally all superficial, seldom above 3 meters.According to interrelated data, when the underground water table degree of depth was 3 one 4 meters, the sandblast preventing water phenomenon just seldom when underground water table surpasses 5 meters, was not seen sandblast and is emitted the water example.So, as if might as well be decided to be 5 meters to the maximum underground water table degree of depth of liquefaction.Certainly under similarity condition, saturated, loose, cleaning, the powder fine sand liquefies the most easily uniformly.
When considering the sand liquefaction problem, want clear and definite earthquake intensity earlier, then according to the prospecting data in place, clearly in the depth range that possibly liquefy, whether there is liquable soil type (by rough sand to light loam).If there is this soil type; Whether the classification indicators that will check this soil according to testing data are within above-mentioned threshold value scope; Also to study this layer soil and phreatic mode of occurence at last; If all within above-mentioned scope, there is the sand liquefaction problem in this with regard to meaning given place to the buried depth of soil layer and underground water table.As long as the public grasps certain disaster relief knowledge of preventing and fighting natural adversities, for save lives with alleviate property loss positive meaning all arranged.But also there is not a kind of device that is exclusively used in demonstration simulation liquefaction of sand at present.
Summary of the invention
The purpose of the utility model provides a kind of demonstration liquefaction of sand analogue means; Cause buildings to sink, topple over the disaster phenomenon through causing sand liquefaction under the demonstration different brackets geological process; Make the disaster phenomenon that people understand sandy soil liquid, surface buildings sink, topples over when changing the disaster generation, and then improve the consciousness that people prevent and reduce natural disasters.
The utility model adopts following technical proposals: a kind of demonstration liquefaction of sand analogue means; Buildings is positioned on the sandbox that husky aqueous mixtures is housed; Install below the sandbox and rock device; The said device that rocks comprises: stepper motor, excentric shaft assembly, oscillating bar assembly, guidance set, slide assemblies, combination of circuits component arrangement, wherein:
Stepper motor is installed on the base plate that rocks device, and the stepping wheel is installed on the output shaft of stepper motor, and the stepping wheel is connected through the stepping driving-belt with stepper motor;
The excentric shaft assembly comprises excentric shaft, stepping wheel, eccentric bushing, and excentric shaft concentric output shafts end is connected with the stepping wheel through the stepping driving-belt; The off-centre of excentric shaft output axle head installation shaft is held, and cooperates installation with eccentric bushing, and said eccentric bushing is fixed on the middle plate, and the power that is used for driving-belt is input to excentric shaft is delivered to eccentric bushing, plate successively;
Oscillating bar assembly is made up of hinge, fork, connecting rod, spring, connecting rod base; Hinge and top board are fixed; Fork one end and hinge are joined through hinge pin, and the other end is joined with the link pin that has spring, and the said connecting rod that has spring is fixed on the connecting rod base; Connecting rod base is fixed on the base plate, is used to realize that top board moves with fork;
Guidance set is made up of the axis of guide, guide holder, orienting sleeve, and on the plate, the axis of guide one end was fixed on guide holder during orienting sleeve was installed in, and the other end slides in orienting sleeve, realizes moving up and down of top board, middle plate;
Slide assemblies is made up of line slideway seat, line slideway, bearing slider, and line slideway is fixed on the track base, and said track base is installed on the base plate; With the middle plate face of line slideway relative position on fixedly mount bearing slider, be used for realizing the move left and right of plate and base plate;
Said combination of circuits component arrangement is made up of direct supply, touch-screen single-chip microcomputer, step actuator.
Adopt technique scheme, direct supply is to step actuator, the power supply of touch-screen single-chip microcomputer, and step actuator is to stepper motor power supply and transmission pulse signal.The touch-screen single-chip microcomputer can be set the pulse signal of different frequency, and inductance type transducer and stepper motor are sent pulse command, accomplishes the motion state under the different frequency.
In sum; The beneficial effect of the utility model is: owing to pass through step motor drive excentric shaft eccentric bushing mechanism and oscillating bar assembly through combination of circuits element output different frequency pulse signal; Realize about mechanism, compound motion up and down; Accomplish mechanism's to-and-fro movement by inductance type transducer received pulse signal again, form certain controllable frequency vibration, thereby the ground thing sink and topples over the generation overall process during earthquake of simulation different brackets.The harm of propaganda liquefaction of sand and the emergent calamity general knowledge of keeping away improve the consciousness that people prevent and reduce natural disasters.
Description of drawings
Fig. 1 is the structural representation of the utility model;
Fig. 2 rocks schematic representation of apparatus.
Among the figure, 1, stepper motor, 2, the excentric shaft assembly, 3, eccentric bushing, 4, oscillating bar assembly; 5, guidance set, 6, top board, 7, middle plate, 8, base plate, 9, inductance type transducer; 10, slide assemblies, 11, the combination of circuits component arrangement, 12 buildingss, 13 sandboxs, 14 husky aqueous mixtures.
Embodiment
Below in conjunction with accompanying drawing, the utility model is done further explanation:
Touch-screen through in the combination of circuits component arrangement 11 is provided with driving frequency; Send the pulse signal instruction to stepper motor 1 and inductance type transducer 9, stepper motor 1 receives pulse signal according to the frequency drives excentric shaft assembly 2 that is provided with, and excentric shaft drives plate 7 in eccentric bushing 3 drives again; Top board 6 relatively and base plate 8 along slide assemblies 10 move left and right; Fork forms swinging of certain angles with top board 6 relatively in the process that moves, because the effect of guidance set 5, ordering about top board 6 can not be relatively and middle plate 7 move left and right; Can only move up and down with respect to middle plate 7, and then realize top board 6 relative base plate 8 move left and right and moved up and down; Be fixed on the also vibration thereupon of buildings 12 on the top board 6 this moment, along with the husky potpourri 14 of the water in the sandbox 13 will separate, buildings 12 also can sink along with the deposition of sand and topple over; For guaranteeing mechanism's continuous effective ground to-and-fro movement, inductance type transducer 9 is housed on base plate 8, each to-and-fro movement is all detected by inductance type transducer 9 under the normal operating conditions, when failure mechanisms or when unusual, utilizes singlechip interruption to set and follows back detection; If in preset time, detect less than mechanism kinematic and arrive the precalculated position, system is judged to be fault or shutdown, otherwise runs well.Terrestrial materials sank and topples over phenomenon and generating process when this device can be set under the different frequency simulation different brackets earthquake.
Claims (1)
1. demonstrate the liquefaction of sand analogue means for one kind, buildings (12) is positioned at the sand that husky aqueous mixtures (14) are housed
On the box (13); Install below the sandbox (13) and rock device; It is characterized in that the said device that rocks comprises: stepper motor (1), excentric shaft assembly (2), oscillating bar assembly (4), guidance set (5), slide assemblies (10), combination of circuits component arrangement (11), wherein:
Said stepper motor (1) is installed on the base plate (8) that rocks device, and the stepping wheel is installed on the output shaft of stepper motor (1), and said stepping wheel is connected through the stepping driving-belt with stepper motor;
Said excentric shaft assembly (2) comprises excentric shaft, stepping wheel, eccentric bushing (3), and excentric shaft concentric output shafts end is connected with the stepping wheel through the stepping driving-belt; The off-centre of excentric shaft output axle head installation shaft is held, and cooperates installation with eccentric bushing (3), and said eccentric bushing (3) is fixed on the middle plate (7), and the power that is used for driving-belt is input to excentric shaft is delivered to eccentric bushing (3), plate (7) successively;
Said oscillating bar assembly (4) is made up of hinge, fork, connecting rod, spring, connecting rod base; Hinge and top board (6) are fixing; Fork one end and said hinge are joined through hinge pin, and the other end is joined with the link pin that has spring, and the said connecting rod that has spring is fixed on the connecting rod base; Connecting rod base is fixed on the base plate (8), is used to realize that top board moves with fork;
Said guidance set (5) is made up of the axis of guide, guide holder, orienting sleeve, and orienting sleeve is installed on the middle plate (7), and the axis of guide one end is fixed on guide holder, and the other end slides in orienting sleeve, realizes moving up and down of top board (6), middle plate (7);
Said slide assemblies (10) is made up of line slideway seat, line slideway, bearing slider, and line slideway is fixed on the track base, and said track base is installed on the base plate (8); With fixedly mount bearing slider on middle plate (7) face of line slideway relative position, be used for realizing the move left and right of plate (7) and base plate (8);
Said combination of circuits component arrangement (11) is made up of direct supply, touch-screen single-chip microcomputer, step actuator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201614257U CN202523296U (en) | 2012-04-17 | 2012-04-17 | Simulator for demonstrating liquefaction of sand |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201614257U CN202523296U (en) | 2012-04-17 | 2012-04-17 | Simulator for demonstrating liquefaction of sand |
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| Publication Number | Publication Date |
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| CN202523296U true CN202523296U (en) | 2012-11-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012201614257U Withdrawn - After Issue CN202523296U (en) | 2012-04-17 | 2012-04-17 | Simulator for demonstrating liquefaction of sand |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102663951A (en) * | 2012-04-17 | 2012-09-12 | 安徽弘炜机电科技有限责任公司 | Simulator for demonstrating liquefaction of sand |
| CN103234726A (en) * | 2013-05-07 | 2013-08-07 | 清华大学 | High gravity field vibration adding device for huge marine centrifugal machine |
-
2012
- 2012-04-17 CN CN2012201614257U patent/CN202523296U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102663951A (en) * | 2012-04-17 | 2012-09-12 | 安徽弘炜机电科技有限责任公司 | Simulator for demonstrating liquefaction of sand |
| CN103234726A (en) * | 2013-05-07 | 2013-08-07 | 清华大学 | High gravity field vibration adding device for huge marine centrifugal machine |
| CN103234726B (en) * | 2013-05-07 | 2015-10-28 | 清华大学 | Super gravity field for giant maritime work centrifugal machine adds shake device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20121107 Effective date of abandoning: 20131211 |
|
| RGAV | Abandon patent right to avoid regrant |