CN208819499U - A kind of railway bed is risen soil teaching demonstration device - Google Patents
A kind of railway bed is risen soil teaching demonstration device Download PDFInfo
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- CN208819499U CN208819499U CN201820221403.2U CN201820221403U CN208819499U CN 208819499 U CN208819499 U CN 208819499U CN 201820221403 U CN201820221403 U CN 201820221403U CN 208819499 U CN208819499 U CN 208819499U
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Abstract
It rises soil teaching demonstration device the utility model discloses a kind of railway bed, including testing stand and model bucket, the model bucket is connected by clamp system and the testing stand, and test soil sample is equipped in the model bucket, and the test soil sample is equipped with power loading disc；The lower part of the model barrel side wall is communicated with water bottle through water supply pipe, and the liquid for being mixed with color developing agent is loaded in the water bottle, is equipped with pressure water pump on the water supply pipe；Roadbed fatigue loading testing machine is equipped with above the model bucket, the dynamic load load probe of the roadbed fatigue loading testing machine offsets with the power loading disc；The device further includes several moisture transducers, and each moisture transducer is electrically connected with data collecting instrument.The utility model has the characteristics that experiment effect is obvious, measurement data is accurate and repeatable experiment, rises soil teaching demonstration suitable for railway bed.
Description
Technical field
The utility model belongs to civil engineering teaching technical field, rises soil specifically, being related to a kind of railway bed
Teaching demonstration device.
Background technique
For railway bed, rising soil is its most wide distribution, influence disease most outstanding and railway engineering teaching
Important content.Rise soil show as train by when sleeper dipping and heaving mud is received squeeze suction by railway roadbed to turning over
Emit, will cause bedding softening and railway ballast it is hardened, make railway roadbed integral, flexible reduce, track geometry variation, seriously affect
The raising of the operation security and transport capacity of train.Existing railway engineering teaching means is limited to hardware condition and time cycle,
Teaching method stays in paper or picture more, strongly limits teaching efficiency and the learning interest of student.
Utility model content
The utility model provides that a kind of process is clear, the demonstration time is short, repeatable high and railway bed easy to operate
It rises soil teaching demonstration device.
To achieve the above object, technical solution used by the utility model is as follows:
A kind of railway bed is risen soil teaching demonstration device, including model made of testing stand and the organic glass being vertically arranged
Bucket, the model bucket are fixed with the testing stand by the clamp system being fixed on the testing stand, are set in the model bucket
There is test soil sample, the test soil sample is equipped with power loading disc；The lower part of the model barrel side wall is provided with several fill holes,
And the fill hole is communicated with the water bottle outside the model bucket by water supply pipe, is loaded with and is mixed in the water bottle
The liquid of color developing agent is equipped with pressure water pump on the water supply pipe；It is equipped with above the model bucket and is connected with the testing stand
Roadbed fatigue loading testing machine, the roadbed fatigue loading testing machine have dynamic load load probe, and the dynamic load load is visited
Head offsets with the power loading disc；Railway bed teaching demonstration device of rising soil further includes axis along the model bucket
To several moisture transducers being sequentially arranged in the model bucket, each moisture transducer is and outside the model bucket
Have draw and display function data collecting instrument be electrically connected.
Preferably, the testing stand has both side plate, and the model bucket position is between two side plates；The clamp system
Radial direction including two along the model bucket extends through the screw rod of two side plates, and two screw rods are close to the model bucket
Grip block has been respectively fixedly connected in one end, and each grip block has the model bucket with corresponding section close to model bucket side
The cambered surface that side wall matches, each lead screw are connected with nut far from the threaded one end of model bucket.
Preferably, rubber pad is embedded in the cambered surface of the grip block.
Preferably, the model bucket is made of the acrylic organic glass material of light transmittance 97%.
Preferably, the color developing agent Schiff's reagent.
Preferably, the test soil sample is included in the particulate soil layer and cement set gradually from bottom to top in the model bucket
Stabilization gravel layer, the cement stabilized macadam layer are to remove partial size to constitute in the cement stabilized macadam of 0.25mm soil particle below
Structure, the particle maximum particle diameter of the particulate soil layer is not more than 0.1mm.
Preferably, the water bottle is geneva water bottle.
The utility model is due to using above-mentioned structure, and compared with prior art, acquired technological progress is:
(1) the model bucket of the utility model setting uses pmma material, is mixed in the liquid in the water bottle
Color developing agent, roadbed fatigue loading testing machine movement, to make the dynamic load load probe to being arranged in the model bucket
Power loading disc in test soil sample is loaded, since liquid has color, can clear view mud from bottom Mao Shangding
" pump is inhaled " process in portion, presentation process are clear, lively；Since pressure water pump is arranged on the water distributor, sample frost boiling can be enhanced
Pump suction needed for emitting mud disease shortens phenomenon time of origin of rising soil, when meeting teaching while reinforcing demonstrating effect
It is long to require；Since the utility model uses moisture transducer, the moisture transducer is electrically connected data collecting instrument, in test process
In, the data collecting instrument can moisture content at automatic collection roadbed filling different depth, the data collecting instrument draws water
Divide and is mutually compared in the model bucket with the presentation process of rising soil occurred in depth distribution curve, with the model bucket；
The roadbed fatigue loading testing machine that the utility model uses can set load amplitude, loading frequency and the load week of demonstration load
Phase, so that the utility model can accurately simulate generated vertical dynamic stress in train traveling process, to study different loads
Affecting laws of the factor to disease of rising soil, it is possible to use the utility model is used as research equipment；The utility model is set
Model bucket can be fastened on testing stand by the clamp system set, effectively prevent model bucket described in experimentation shake or
Displacement, and then experiment effect is influenced, cause the moisture transducer detection deviation occur, so that being passed to the data collecting instrument
Data inaccuracy.
(2) the test soil sample is that partial size is 0.1mm or less fine grained soil and removes partial size in 0.25mm or less soil particle water
Cement-stabilizing broken stone layered combination, the cement stabilized macadam structure for removing partial size in 0.25mm or less soil particle have larger hole,
Mud is easy to pass in and out in pore channel, therefore can directly rinse colour developing mud under conditions of not destroying soil sample, greatly improve
Repeatability, save the cost.
(3) water bottle is geneva water bottle, and the geneva water bottle of quartz glass material by being made, leakproofness
Good, moisturizing flow velocity is adjustable, not by ambient temperature and humidity variation and deform, moisturizing performance is stablized, being capable of accurate simulation
Moisture supply state of the underground water to upper subbase soil.
To sum up, the utility model structure is simple, and effect is obvious, and strong applicability is easy to operate, is particularly suitable for civil engineering
In teaching, rise soil disease demonstration, help student more intuitively with deep this course content of study；And can more into
Under the conditions of the different load parameters of the research of one step, grain composition and cement mixing content, the situation of change of railway bed separated layer water cut,
Clearly simulate live disease of rising soil actually occurs process, can be used for subgrade defect Research on Treatment, and selection is closed
Reason, safe and efficient road structure are risen soil teaching demonstration suitable for railway bed.
Detailed description of the invention
Attached drawing is used to provide a further understanding of the present invention, and constitutes part of specification, practical with this
Novel embodiment is used to explain the utility model together, does not constitute limitations of the present invention.
In the accompanying drawings:
Fig. 1 is the structural schematic diagram of the utility model embodiment；
Fig. 2 is the structural schematic diagram of the utility model embodiment clamp system.
Mark component: 1-1 is roadbed fatigue loading testing machine；1-2 is crossbeam；1-3 is dynamic load load probe；2-1 is
Water bottle；2-2 is water supply pipe；2-3 is pressure water pump；3-1 is model bucket；3-2 is power loading disc；3-3 is moisture transducer；
3-4 is data collecting instrument；4-1 is cement stabilized macadam layer；4-2 is particulate soil layer；5-1 is testing stand；5-2 is side plate；6-1 is
Screw rod；6-2 is grip block；6-3 is nut；6-4 is rubber pad.
Specific embodiment
It is illustrated below in conjunction with preferred embodiment of the attached drawing to the utility model.It should be appreciated that described herein excellent
It selects embodiment to be only used for describing and explaining the present invention, is not used to limit the utility model.
A kind of railway bed of embodiment is risen soil teaching demonstration device
The utility model embodiment discloses a kind of railway bed and rises soil teaching demonstration device, referring to Figures 1 and 2,
The model bucket 3-1 being placed on testing stand 5-1 including testing stand 5-1 and vertically, in order in experimentation convenient for observation, model bucket
3-1 is made of organic glass, it is preferred that model bucket 3-1 is the acrylic organic glass material that light transmittance is up to 97%；Model
The diameter of bucket 3-1 is 300mm, is highly 500mm.
Model bucket 3-1 is fixed on testing stand 5-1 by clamp system, and there are two side plate 5-2, models for testing stand 5-1 tool
Bucket 3-1 is placed between two side plate 5-2；Clamp system includes that two radial directions along model bucket 3-1 extend through two side plates
The screw rod 6-1, two screw rod 6-1 of 5-2 has been respectively fixedly connected with grip block 6-2, each grip block close to one end of model bucket 3-1
6-2 is the cambered surface matched with the side model bucket 3-1 close to the side of the side model bucket 3-1, in order to increase grip block 6-2 and mould
Frictional force between type bucket 3-1 is embedded with rubber pad 6-4 in the cambered surface of grip block 6-2, and then makes model bucket 3-1 more securely
It is fixed on testing stand 5-1；Each lead screw is connected with nut 6-3 far from the threaded one end of model bucket 3-1.
Filled with test soil sample in model bucket 3-1, test soil sample includes from bottom to top setting gradually in model bucket 3-1
Particulate soil layer 4-2 and cement stabilized macadam layer 4-1, wherein with cement stabilizing specified in " high-speed railway subgrade design specification "
Based on macadam gradating, cement stabilized macadam layer 4-1 is to remove the cement stabilized macadam of 0.25mm or less soil particle to be constituted
The particle maximum particle diameter of structure, particulate soil layer 4-2 is not more than 0.1mm.
Dynamic loading disc 3-2 is placed in cement stabilized macadam 4-1 layers of upper surface center, and loading disc is diameter 10cm,
The steel plate of thickness 1cm, yield strength Q235.
Due to being greater than 10 times of soil sample maximum particle diameter of model bucket 3-1 in test using diameter, can eliminate due to model bucket 3-1
Small or partial size lacks and the boundary error of generation, and the power loading disc 3-2 for placing small diameter can eliminate the side model bucket 3-1
The transverse shear stress power that boundary generates protects model bucket 3-1.
The lower part of model bucket 3-1 is opened there are four fill hole (not shown), and four fill holes are uniformly arranged on model bucket
The side of 3-1, each fill hole at the bottom 20mm of bucket bottom away from opening up, and the diameter of each fill hole is 10mm；Each benefit
Water hole water supply pipe 2-2 made of rubber material is connected to the water bottle 2-1 being arranged in outside model bucket 3-1, wherein moisturizing
Pressure water pump 2-3 is installed, water bottle 2-1 is geneva water bottle 2-1 on pipe 2-2.
It is loaded with the liquid for being mixed with color developing agent in water bottle 2-1, considers for the ease of observation and experiment safety, color developing agent choosing
With nontoxic Schiff's reagent, Schiff's reagent is red, and neutral liquid forms red mud after mixing with fine grained soil, can
Clearly appear from mud transition process.
Roadbed fatigue loading testing machine 1-1 is provided with above model bucket 3-1, roadbed fatigue loading testing machine 1-1 is solid vertically
It is scheduled on the crossbeam 1-2 of testing stand 5-1, roadbed fatigue loading testing machine 1-1 has dynamic load load probe 1-3, and dynamic load adds
It carries and offsets at probe 1-3 and the center of the upper surface of power loading disc 3-2.
The present embodiment further includes being successively set on multiple moisture transducers in model bucket 3-1 along the axial direction of model bucket 3-1
3-3, each moisture transducer 3-3 are placed in test soil sample, and each moisture transducer 3-3 is with setting in model bucket 3-1
It is outer have draw and the data collecting instrument 3-4 of display function is electrically connected, wherein the model DT80 of data collecting instrument 3-4 and
Its matched control, mapping software.
The working principle of the utility model is as follows:
Firstly, color developing agent Schiff's reagent is added in water bottle 2-1, stand；The preparation test soil sample in model bucket 3-1,
Reality is hit in layering, after preparation, places power loading disc 3-2 at test soil sample top center；Then, tightening nut 6-3 makes
Model bucket 3-1 is stabilized on testing stand 5-1 by grip block 6-2；The dynamic load for adjusting roadbed fatigue loading testing machine 1-1, which loads, to be visited
Head 1-3 keeps just contact condition to the upper surface of power loading disc 3-2；Later, roadbed fatigue loading testing machine 1-1 is adjusted
Loading frequency, loading cycle and load amplitude, start to simulate；By mud position of developing the color, mud transport phenomena is observed,
Demonstrate overall process of rising soil；And by moisture transducer 3-3 and data collecting instrument 3-4, automatic moisture of drawing is with depth distribution
Presentation process of rising soil in curve, with model bucket 3-1 mutually compares；After demonstration, since cement stabilized macadam 4-1 has
There is larger hole, colour developing mud can be directly rinsed, convenient for recycling in the case where not destroying sample structure.
Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention, it is not limited to this
Utility model, although the utility model is described in detail with reference to the foregoing embodiments, for those skilled in the art
For, it is still possible to modify the technical solutions described in the foregoing embodiments, or to part of technical characteristic
It is equivalently replaced.Within the spirit and principle of the utility model, any modification, equivalent replacement, improvement and so on,
It should be included within the scope of the utility model claims protection.
Claims (7)
- The teaching demonstration device 1. a kind of railway bed is risen soil, it is characterised in that: including testing stand and the organic glass being vertically arranged Manufactured model bucket, the model bucket is fixed by the clamp system being fixed on the testing stand with the testing stand, described Test soil sample is equipped in model bucket, the test soil sample is equipped with power loading disc；If the lower part of the model barrel side wall is provided with Dry fill hole, and the fill hole is communicated with the water bottle outside the model bucket, the water bottle by water supply pipe It is inside loaded with the liquid for being mixed with color developing agent, pressure water pump is installed on the water supply pipe；Be equipped with above the model bucket with it is described The connected roadbed fatigue loading testing machine of testing stand, the roadbed fatigue loading testing machine has dynamic load load probe, described Dynamic load load probe offsets with the power loading disc；Railway bed teaching demonstration device of rising soil further includes along institute The axial direction for stating model bucket is sequentially arranged in several moisture transducers in the model bucket, each moisture transducer be set to Having outside the model bucket is drawn and the data collecting instrument of display function is electrically connected.
- The teaching demonstration device 2. railway bed according to claim 1 is risen soil, it is characterised in that: the testing stand tool There is both side plate, the model bucket position is between two side plates；The clamp system includes two radial directions along the model bucket The screw rod of two side plates is extended through, grip block, each institute has been respectively fixedly connected close to one end of the model bucket in two screw rods Stating grip block has the cambered surface matched with the model barrel side wall of corresponding section, each silk close to model bucket side Bar is connected with nut far from the threaded one end of model bucket.
- The teaching demonstration device 3. railway bed according to claim 2 is risen soil, it is characterised in that: the grip block Rubber pad is embedded in cambered surface.
- The teaching demonstration device 4. railway bed according to claim 1 is risen soil, it is characterised in that: the model bucket is The acrylic organic glass material of light transmittance 97% is made.
- The teaching demonstration device 5. railway bed according to claim 1 is risen soil, it is characterised in that: the color developing agent is Schiff's reagent.
- The teaching demonstration device 6. railway bed according to claim 1 is risen soil, it is characterised in that: the test soil sample It is included in the particulate soil layer and cement stabilized macadam layer set gradually from bottom to top in the model bucket, the cement stabilized macadam Layer is removes the structure that partial size is constituted in the cement stabilized macadam of 0.25mm soil particle below, and the particle of the particulate soil layer is most Big partial size is not more than 0.1mm.
- The teaching demonstration device 7. railway bed according to claim 1 is risen soil, it is characterised in that: the water bottle is Geneva water bottle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820221403.2U CN208819499U (en) | 2018-02-08 | 2018-02-08 | A kind of railway bed is risen soil teaching demonstration device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820221403.2U CN208819499U (en) | 2018-02-08 | 2018-02-08 | A kind of railway bed is risen soil teaching demonstration device |
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| Publication Number | Publication Date |
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| CN208819499U true CN208819499U (en) | 2019-05-03 |
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| CN201820221403.2U Expired - Fee Related CN208819499U (en) | 2018-02-08 | 2018-02-08 | A kind of railway bed is risen soil teaching demonstration device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110409400A (en) * | 2019-07-10 | 2019-11-05 | 中南大学 | A kind of measurement mud turbidity Spatio-temporal Evolution characteristic test apparatus and test method |
-
2018
- 2018-02-08 CN CN201820221403.2U patent/CN208819499U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110409400A (en) * | 2019-07-10 | 2019-11-05 | 中南大学 | A kind of measurement mud turbidity Spatio-temporal Evolution characteristic test apparatus and test method |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190503 Termination date: 20200208 |
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| CF01 | Termination of patent right due to non-payment of annual fee |