CN209102537U - A kind of device for bituminous concrete constant temperature and humidity creep recovery experiment - Google Patents
A kind of device for bituminous concrete constant temperature and humidity creep recovery experiment Download PDFInfo
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- CN209102537U CN209102537U CN201821799651.1U CN201821799651U CN209102537U CN 209102537 U CN209102537 U CN 209102537U CN 201821799651 U CN201821799651 U CN 201821799651U CN 209102537 U CN209102537 U CN 209102537U
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- bituminous concrete
- creep recovery
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Abstract
The utility model discloses a kind of devices for bituminous concrete constant temperature and humidity creep recovery experiment, it includes climatic chamber, the tester being built in climatic chamber, the tester includes bottom plate, material sample on bottom plate and measurement component are set, it is evenly distributed on the first column combination of bottom plate side and the second column combination of the other side, across the thistle board of the combination of the first column and the combination of the second column, reciprocating mechanism in the combination of first column is set, control the motor of reciprocating mechanism running, weight bucket below reciprocating mechanism is set；The reciprocating mechanism includes cam and interlinked mechanism, and the motor drives interlinked mechanism to be moved back and forth vertically by control cam circular motion, thus control interlinked mechanism and the contact of weight bucket with separate, the loading and unloading of control weight bucket.
Description
Technical field
The utility model relates to the creep test technical fields of asphalt material, and in particular to one kind is permanent for bituminous concrete
The device of constant temperature and humidity creep recovery experiment.
Background technique
The asphalt material of road construction has apparent creep properties, directly affects the service performance of road, in recent years, drip
Green concrete creep property is always research hotspot.The research of bituminous concrete creep behaviour has had a series of experiments method:
Creep test, the incremental creep recovery experiment etc. of creep recovery experiment, stress.But material stochastic problems are considered, to different examinations
It is difficult to obtain accurate result when part is tested.For the creep recovery test that stress is incremented by, each recovery stage time foot
It is enough long, it can be assumed that viscoelastic deformation is replied completely in this time.Return curve in the incremental creep recovery test of stress,
Corresponding overstrain is subtracted by translation, the return curve that single creep recovery is tested under different stress can be regarded as.Take list
A test specimen carries out creep recovery experiment, avoids the influence of material randomness bring.Therefore designing one kind, can to measure material compacted
The experimental provision device and experimental method for becoming healing properties, for the tool such as research material creep behaviour and rule, guiding material design
There is important meaning.
Currently, being material universal testing machine for measuring the most frequently used instrument of the mechaanical property of materials, exist to measure material
Creep Mechanics performance under certain steady temperature, it usually needs increase on universal testing machine a constant temperature system and it is a set of reversed plus
It carries and sets.The recovery stage of experiment is replied for material creep, Opposite side loading device precision is poor.Firstly, after the device unloads power
Pressure head is newly disengaged with test specimen, and test specimen withstands pressure head after replying, and pressure head is omnipotent since power induction is just separated with test specimen again
Machine measures recovery stage curve commonly greater than actual value, secondly, the device is by longer screw rod, the components such as metal framework with
Universal motor connects, and itself has trueness error and stuck equal burst accidents.Described in synthesis, Universal motor measures bituminous concrete creep
The disadvantages of there are low precisions, at high cost, cannot consider humidity.
Utility model content
(1) technical problems to be solved
In order to overcome the shortage of prior art, it is proposed that a kind of dress for bituminous concrete constant temperature and humidity creep recovery experiment
It sets, solves the problems, such as that Image Acquisition and teaching talk back equipment are inconvenient for use, the degree of automation is lower, image effect is undesirable.
(2) technical solution
The utility model is achieved through the following technical solutions: the utility model proposes one kind to be used for bituminous concrete constant temperature
The device of constant humidity creep recovery experiment comprising climatic chamber, the tester being built in climatic chamber, the tester
Including bottom plate, the material sample being arranged on bottom plate and the first column combination for measuring component, being evenly distributed on bottom plate side
And the second column of the other side combines, is vertical first across the thistle board of the combination of the first column and the combination of the second column, setting
The motor of reciprocating mechanism, control reciprocating mechanism running in column combination, the weight being arranged in below reciprocating mechanism
Object bucket；The reciprocating mechanism includes cam and interlinked mechanism, and the motor is driven and interlocked by control cam circular motion
Mechanism is moved back and forth vertically, thus control interlinked mechanism and the contact of weight bucket with separate, control the load of weight bucket with
Unloading.
Further, the device of be set forth in bituminous concrete constant temperature and humidity creep recovery experiment further include the first support plate and
Second support plate；First support plate include the first trapezoidal main body, the first left swivel nut that the first main body two sides are set and
First right swivel nut；First support plate is socketed in the combination of the second column and is passed through by the first left swivel nut and the first right swivel nut
Bolt is fixed；Second support plate includes the second trapezoidal main body, the second left swivel nut that the second main body two sides are arranged in and
Two right swivel nuts；Second support plate is socketed in the combination of the first column by the second left swivel nut and the second right swivel nut and passes through spiral shell
Bolt is fixed.
Further, the second column combination includes the second left column and the second right column.
Further, the first column combination includes the first left column and the first right column.
Further, the contact point A, the contact point B and the contact point C are provided on the cam；The contact point A, the contact point B
Cam is divided into AB line segment, BC line segment and AC line segment with the contact point C, wherein the AB line segment is linear, the AC line segment
For inner circle arc, the BC line segment is arc-shaped；Motor is rotated with constant speed, and band moving cam, which carries out circular motion, can allow again
Object bucket is instantaneously unloaded, smooth to load
Further, the interlinked mechanism is freely slided along the first left column and the first right column vertical direction,
In, the interlinked mechanism includes the sleeve combination being socketed in the second left column and the second right column, is arranged on sleeve combination
First connecting rod combination and second connecting rod combination, the first connecting rod group, which is closed, is provided with bead, and the second connecting rod group is closed
It is provided with the lantern ring for supporting the weight bucket, the bead is equipped in the inner tank mouths of cam.
Further, there are three the bolt slot of trisection, the material sample is located at bolt slot for the base plate interior setting
Middle position and be fixed by three bolts.
Further, the measurement component is laser displacement sensor；Bottom plate is arranged in the laser displacement sensor
Top and the displacement for measuring thistle board.
Further, conveyer belt is provided on second support plate.
(3) beneficial effect
The beneficial effects of the utility model are:
First, the utility model is low in cost, and structure is simple, part manufacture easy to process.
Second, the utility model compact, convenient for being put in climatic chamber, the creep carried out under isoperibol is real
It tests.
Third, the utility model can make different cams according to different experiments needs, thus when controlling test specimen loading and unloading
Between, effective means is provided to measure the mechanical property of viscoelastoplastic material.
4th, the utility model can not only carry out the incremental creep recovery experiment of climatic chamber internal stress, equally may be used
The incremental creep test of progress creep test, creep recovery experiment, stress, the operation is more convenient.
5th, the utility model directly measures test piece deformation using high-precision electronic dial gauge, to improve
Experimental precision, the more accurately creep recovery behavior of analysis bituminous concrete.
Detailed description of the invention
Fig. 1 is that a kind of stereochemical structure for bituminous concrete constant temperature and humidity creep recovery experiment described in the utility model is shown
It is intended to；
Fig. 2 is that a kind of stereochemical structure for bituminous concrete constant temperature and humidity creep recovery experiment described in the utility model is shown
It is intended to；
Fig. 3 is a kind of structure of cam for bituminous concrete constant temperature and humidity creep recovery experiment described in the utility model
Schematic diagram；
Fig. 4 is a kind of main view for bituminous concrete constant temperature and humidity creep recovery experiment described in the utility model；
Fig. 5 is the rearview of Fig. 4；
Fig. 6 is the structural schematic diagram of the first support plate；
Fig. 7 is the structural schematic diagram of the second support plate.
Fig. 8 is that a kind of stress for bituminous concrete constant temperature and humidity creep recovery experiment described in the utility model is incremented by
Creep recovery test load history table；
Fig. 9 is a kind of test result for bituminous concrete constant temperature and humidity creep recovery experiment described in the utility model.
Figure 10 is the schematic perspective view that tester is placed on climatic chamber.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only used to explain
The utility model is not used to limit the utility model.
As shown in Fig. 1-Figure 10, the utility model proposes one kind to test for the creep recovery of bituminous concrete constant temperature and humidity
Device comprising climatic chamber 101, the tester 201 being built in climatic chamber 101, the tester 201 include
Bottom plate 1, the material sample 9 being arranged on bottom plate 1 and measurement component 10, the first column group for being evenly distributed on 15 side of bottom plate
Second column of conjunction 5 and other side combination 4 exists across the thistle board 2 of the combination 5 of the first column and the second column combination 4, setting
The motor 15 of reciprocating mechanism 3, the control running of reciprocating mechanism 3 in first column combination 5 is arranged in reciprocating machine
The weight bucket 8 of 3 lower section of structure；The reciprocating mechanism 3 includes cam 6 and interlinked mechanism 7, and the motor 15 passes through control cam
6 circular motion drive interlinked mechanism 7 to be moved back and forth vertically, to control interlinked mechanism 7 and the contact of weight bucket 8 and divide
From the loading and unloading of control weight bucket 8；The device of be set forth in bituminous concrete constant temperature and humidity creep recovery experiment further includes the
One support plate 14 and the second support plate 13；Conveyer belt 16 is provided on first support plate 14, on second support plate 13
It is provided with motor 15；First support plate 14 includes the first trapezoidal main body 141, is arranged in the of 141 two sides of the first main body
One left swivel nut 142 and the first right swivel nut 143；First support plate 14 passes through the first left swivel nut 142 and the first right swivel nut 143
It is socketed in the second column combination 4 and fixed by bolt (not identified in figure)；Second support plate 13 includes trapezoidal the
Two main bodys 131, the second left swivel nut 132 and the second right swivel nut 133 that 131 two sides of the second main body are set；Second support plate
13 are socketed in the first column combination 5 by the second left swivel nut 132 and the second right swivel nut 133 and pass through bolt (not identifying in figure)
It is fixed, wherein the second column combination 4 includes the second left column 41 and the second right column 42；The first column combination 5
Including the first left column 51 and the first right column 52；Sample is under the permanent load effect of application, over time, meeting
Generate the deformation of creep；The displacement of material sample 9 is equal with the displacement of thistle board 2, measures lightweight by laser displacement sensor 10
The displacement of plate 2, computer carry out real-time sampling and record to measurement data；In creep test, often to be provided to material sample 9
Its whole can be put into climatic chamber 101 and be carried out in fact due to the compact of this experimental provision by one isoperibol
It tests.There are also being exactly that the bottom plate 1 is internally provided with the bolt slot 12 of three trisections, the material sample is located at bolt slot 12
Middle position and be fixed by three bolts 11.
As shown in figures 1 and 3, the utility model proposes one kind tests for the creep recovery of bituminous concrete constant temperature and humidity
Device, be provided with the contact point A 65, the contact point B 66 and the contact point C 67 on the cam 6；The contact point A 65, the contact point B
The contact point 66 and C 67 divides cam 6 for AB line segment 62, BC line segment 64 and AC line segment 61, wherein the AB line segment 62 is straight line
Shape, the AC line segment 61 are inner circle arc, and the BC line segment 64 is arc-shaped；Motor 15 is rotated with constant speed, band moving cam 6
Carrying out circular motion can allow weight bucket 8 instantaneously to be unloaded, smooth to add；Wherein, cam 6 be driving link, the cam 6 it is interior
Notch 63 and 7 upper end bead of interlinked mechanism, 74 contact free, bead 74 can be rolled in the inner tank mouths 63 of cam 6, wherein motor 15
It is rotated with constant speed, band moving cam 6 carries out circular motion and moves respectively in B line segment 62, BC line segment 64 and AC line segment 61, described
Cam 6 is rotated clockwise by Fig. 1, and the bead 74 on interlinked mechanism 7 (since guide rod constrains, can only carry out on central axes
Vertical movement) with BC line segment 64 contact when, 7 lower end lantern ring 75 of interlinked mechanism is separated with weight bucket 8, and weight bucket 8 is pressed in material at this time
To expect on sample 9, material sample 9 is in the creep stage, when bead 74 and AB line segment 62 contact, the lower end lantern ring 75 of interlinked mechanism 7
Lift weight bucket 8, material sample 9 is in recovery stage；When bead 74 and B point 66 contact, conveyer belt 16 is (equidistant in advance to put
Set required weight counterweight) counterweight is fallen in weight bucket 9 just at transmission, when AC line segment 61 guarantees to reinforce to weight again, add
It carries gentle.
As depicted in figs. 1 and 2, the utility model proposes one kind tests for the creep recovery of bituminous concrete constant temperature and humidity
Device, wherein the interlinked mechanism 7 includes the sleeve combination 71 that is socketed in the second left column 1 and the second right column 52, if
First connecting rod combination 73 and second connecting rod combination 72 on sleeve combination 71 are set, is provided in the first connecting rod combination 73 small
Ball 74, the second connecting rod combine the lantern ring 75 being provided on 27 for supporting the weight bucket 8, and the bead 74 is equipped with
In the inner tank mouths 63 of cam 6.
Illustrate a kind of reality of the specific embodiment of device for bituminous concrete constant temperature and humidity creep recovery experiment below
Proved recipe method and step.
In order to measure creep recovery deformation of the material sample 9 under certain steady temperature, we use laser displacement sensor
10, and entire tester 201 is put into climatic chamber 102.Specific experimental procedure is as follows:
1, the first support plate 14 and the second support plate 13 are adjusted to suitable position and are consolidated with its nut (not identified in figure)
It is fixed, conveyer belt 16 and motor 15 are installed respectively on the first support plate 14, the second support plate 13.
2, the top bead 74 of interlinked mechanism 7 is put into the inner tank mouths 36 of cam 6, loads reciprocating mechanism 3: the company
The lantern ring 71 of motivation structure 7 is inserted in the first column combination 5, the connection of 6 motor 15 of cam.7 lower collar 75 of interlinked mechanism entangles weight
Bucket 8.
3, material sample 12 is placed on 1 center of bottom plate, blending bolt 11 cooperates the fixed material sample of bolt slot 12 on bottom plate
9；The magnitude of load applied is the sum of weight in weight bucket 119 and bucket.Lantern ring 75 has fallen weight bucket 8, weight bucket 8 when initial
There is no apply load to material sample 9.
4, laser displacement sensor 10 is installed, computer is connected.
5, entire tester 201 is put into climatic chamber 101, is leveled, fixing leg is quiet；It is placed in climatic chamber
4 hours or more, so that test macro and detected materials sample reach temperature and wetting balance state.
6, motor 15, the hair rate of conveyer belt 16 are adjusted, starts to test, while remembering using 10 measuring system of displacement sensor
Strain value and time value in experimentation are recorded, and depositing is text file, the final creep recovery empirical curve for obtaining material.
7, in order to verify device effect, add unloading course according to the experiment in Fig. 8 table using the present apparatus, rubber grain is dripped
Green sand stress is incremented by creep recovery behavior and has carried out actual test, and test results are shown in figure 9.
The beneficial effects of the utility model are:
First, the utility model is low in cost, and structure is simple, part manufacture easy to process.
Second, the utility model compact, convenient for being put in climatic chamber, the creep carried out under isoperibol is real
It tests.
Third, the utility model can make different cams according to different experiments needs, thus when controlling test specimen loading and unloading
Between, effective means is provided to measure the mechanical property of viscoelastoplastic material.
4th, the utility model can not only carry out the incremental creep recovery experiment of climatic chamber internal stress, equally may be used
The incremental creep test of progress creep test, creep recovery experiment, stress, the operation is more convenient.
5th, the utility model directly measures test piece deformation using high-precision electronic dial gauge, to improve
Experimental precision, the more accurately creep recovery behavior of analysis bituminous concrete.
Embodiment described above is only that preferred embodiments of the present invention are described, not practical to this
Novel conception and scope is defined.Without departing from the design concept of the present utility model, ordinary people in the field couple
The all variations and modifications that the technical solution of the utility model is made, should fall within the protection scope of the present utility model, this reality
With novel claimed technology contents, it is all described in the claims.
Claims (9)
1. a kind of device for bituminous concrete constant temperature and humidity creep recovery experiment, it is characterised in that: it includes constant temperature and humidity
Case, the tester being built in climatic chamber, the tester include bottom plate, the material sample being arranged on bottom plate and survey
Amount component, the first column combination for being evenly distributed on bottom plate side and the second column combination of the other side pass through the first column
The thistle board of combination and the combination of the second column, the reciprocating mechanism being arranged in the combination of the first column, control reciprocating machine
The motor of structure running, the weight bucket being arranged in below reciprocating mechanism；The reciprocating mechanism includes cam and gearing machine
Structure, the motor drive interlinked mechanism to be moved back and forth vertically, to control interlinked mechanism by control cam circular motion
With the contact of weight bucket with separate, control weight bucket loading and unloading.
2. a kind of device for bituminous concrete constant temperature and humidity creep recovery experiment according to claim 1, feature
Be: the device of be set forth in bituminous concrete constant temperature and humidity creep recovery experiment further includes the first support plate and the second support plate；
First support plate includes the first trapezoidal main body, the first left swivel nut and the first right swivel nut that the first main body two sides are arranged in；
First support plate is socketed in the combination of the second column and is bolted by the first left swivel nut and the first right swivel nut；Institute
Stating the second support plate includes the second trapezoidal main body, the second left swivel nut and the second right swivel nut that the second main body two sides are arranged in；Institute
It states the second support plate and is socketed in the combination of the first column and is bolted by the second left swivel nut and the second right swivel nut.
3. a kind of device for bituminous concrete constant temperature and humidity creep recovery experiment according to claim 2, feature
Be: the second column combination includes the second left column and the second right column.
4. a kind of device for bituminous concrete constant temperature and humidity creep recovery experiment according to claim 2, feature
Be: the first column combination includes the first left column and the first right column.
5. a kind of device for bituminous concrete constant temperature and humidity creep recovery experiment according to claim 1, feature
It is: is provided with the contact point A, the contact point B and the contact point C on the cam；The contact point A, the contact point B and the contact point C will
Cam is divided into AB line segment, BC line segment and AC line segment, wherein the AB line segment is linear, and the AC line segment is inner circle arc, institute
It is arc-shaped for stating BC line segment.
6. a kind of device for bituminous concrete constant temperature and humidity creep recovery experiment according to claim 4, feature
Be: the interlinked mechanism is freely slided along the first left column and the first right column vertical direction, wherein the gearing machine
Structure includes the sleeve combination being socketed in the second left column and the second right column, and the first connecting rod combination on sleeve combination is arranged in
It is combined with second connecting rod, the first connecting rod group, which is closed, is provided with bead, and the second connecting rod group, which is closed, to be provided with for supporting
The lantern ring of the weight bucket, the bead are equipped in the inner tank mouths of cam.
7. a kind of device for bituminous concrete constant temperature and humidity creep recovery experiment according to claim 1, feature
Be: there are three the bolt slot of trisection, the material sample is located at the middle position of bolt slot simultaneously for the base plate interior setting
And it is fixed by three bolts.
8. a kind of device for bituminous concrete constant temperature and humidity creep recovery experiment according to claim 1, feature
Be: the measurement component is laser displacement sensor；The top of bottom plate and measurement is arranged in the laser displacement sensor
The displacement of thistle board.
9. a kind of device for bituminous concrete constant temperature and humidity creep recovery experiment according to claim 2, feature
It is: is provided with conveyer belt on second support plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821799651.1U CN209102537U (en) | 2018-11-02 | 2018-11-02 | A kind of device for bituminous concrete constant temperature and humidity creep recovery experiment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821799651.1U CN209102537U (en) | 2018-11-02 | 2018-11-02 | A kind of device for bituminous concrete constant temperature and humidity creep recovery experiment |
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| CN209102537U true CN209102537U (en) | 2019-07-12 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109085076A (en) * | 2018-11-02 | 2018-12-25 | 武汉科技大学 | A kind of device for bituminous concrete constant temperature and humidity creep recovery experiment |
-
2018
- 2018-11-02 CN CN201821799651.1U patent/CN209102537U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109085076A (en) * | 2018-11-02 | 2018-12-25 | 武汉科技大学 | A kind of device for bituminous concrete constant temperature and humidity creep recovery experiment |
| CN109085076B (en) * | 2018-11-02 | 2023-11-21 | 武汉科技大学 | Device for asphalt concrete constant temperature and humidity creep recovery experiment |
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