CN207439831U - A kind of asphalt fatigue loading device of simulated environment temperature shock - Google Patents
A kind of asphalt fatigue loading device of simulated environment temperature shock Download PDFInfo
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- CN207439831U CN207439831U CN201721618711.0U CN201721618711U CN207439831U CN 207439831 U CN207439831 U CN 207439831U CN 201721618711 U CN201721618711 U CN 201721618711U CN 207439831 U CN207439831 U CN 207439831U
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- test specimen
- wall
- low temperature
- environmental
- wheel
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model is related to a kind of asphalt fatigue loading device of simulated environment temperature shock, including environmental cabinet and be arranged inside the test specimen loading plate that can be slidably reciprocated in the horizontal direction；Environmental cabinet is separated by thermal insulation board forms hot environment case and environmental chamber at low temperature, hot environment case and the loading wheel for being mounted on to treat test block application pressure and slidably reciprocating in the horizontal direction in environmental chamber at low temperature, loading wheel is located at the top of test specimen loading plate, and loading wheel connects the first power set by transmission rod；Thermal insulation board, which can be rotated to its bottom, is higher than test specimen loading plate；Heating unit in hot environment case is installed, refrigeration system is installed in environmental chamber at low temperature；Temperature sensor is respectively mounted in hot environment case and environmental chamber at low temperature, displacement sensor and pressure sensor are installed on transmission rod, temperature sensor, displacement sensor and pressure sensor are all connected with control panel.The utility model can complete the fatigue property test that asphalt in the case of temperature shock resists.
Description
Technical field
The utility model belongs to asphalt fatigue loading equipment technical field, and in particular to a kind of simulated environment temperature
The asphalt fatigue loading device of cataclysm.
Background technology
Now, with the high speed development of highway construction cause, highway work persons not only only focus on asphalt
Early-age behavior, but also attach great importance to the durability of asphalt, i.e. the fatigue behaviour of asphalt.Fatigue refers to material
Material causes a kind of breakoff phenomenon of pavement cracking under the Repeated Loading far below its ultimate strength.Asphalt
Fatigue behaviour is exactly that it resists the ability of this fatigue rupture under course under cyclic loading.At present, asphalt fatigue is tested
The method of performance is broadly divided into two kinds of indoor and outdoors.Two kinds of tests violate the law and respectively have advantage and disadvantage.But it cannot all react well
Material is in external condition acute variation, the fatigue behaviour of asphalt mixture, therefore urgent need one kind can be rapid with simulated environment temperature
The asphalt fatigue loading device so changed.
At present, common asphalt mixture fatigue testing test method has the following disadvantages：
First, for example circular track test accelerating and loading test etc. is costly, the cycle is long for outdoor test method, and result of the test is by working as
Ground environment and pavement structure used are affected.
2nd, laboratory test cannot simulated roadway unit well synthesis stress, have difference with actual fatigue effect.
The content of the invention
The purpose of the utility model is to overcome problems of the prior art, provide a kind of simulated environment temperature shock
Asphalt fatigue loading device, the test of Asphalt Mixtures Fatigue Properties under temperature shock situation can be completed.
In order to achieve the above object, the utility model adopts the following technical solution：
Including environmental cabinet, the test specimen loading plate that can be slidably reciprocated in the horizontal direction is provided in environmental cabinet；Environmental cabinet by
Thermal insulation board separates to form hot environment case and environmental chamber at low temperature, and hot environment case can be treated with being mounted in environmental chamber at low temperature
Test block applies pressure and the loading wheel to slidably reciprocate in the horizontal direction, and loading wheel is located at the top of test specimen loading plate, adds
Carrier vehicle wheel connects the first power set by transmission rod；Thermal insulation board, which can be rotated to its bottom, is higher than test specimen loading plate；
Heating unit in hot environment case is installed, refrigeration system is installed in environmental chamber at low temperature；
Temperature sensor is respectively mounted in hot environment case and environmental chamber at low temperature, displacement sensor and pressure are installed on transmission rod
Force snesor, temperature sensor, displacement sensor and pressure sensor are all connected with control panel.
Further, hot environment case contains inner and outer wall with environmental chamber at low temperature；Heating unit includes being arranged at height
Heating wire between warm environment chamber interior wall and outer wall；Refrigeration system includes the steaming being mounted between low temperature environment chamber interior wall and outer wall
Device is sent out, evaporator passes sequentially through pipe-and-filter and forming circuit is connected with compressor, and condensate liquid is filled in circuit.
Further, compressor is located between the inner and outer wall of hot environment case.
Further, the first slide on the madial wall of environmental cabinet is set, is equipped on the side wall of test specimen loading plate and first
The matched first pulley of slide, test specimen loading plate connect the second power set by connecting rod, are opened on the side wall of environmental cabinet
Equipped with the through hole skidded off for test specimen loading plate.
Further, environmental cabinet offers the side wall of through hole equipped with the door with windowpane.
Further, the first power set and the second power set use servo-type hydraulic press.
Further, the second slide of installation at the top of environmental cabinet, the second slide connect wheel platform sling, power transmission by second pulley
Bar passes through wheel platform sling；It is threaded connection between transmission rod and loading wheel.
Further, location nut is installed on the side wall of test specimen loading plate.
Further, there are four wheel and four support bases for the installation of environmental cabinet bottom；Control panel is also associated with timing
Device.
Further, the outer wall materials of hot environment case and environmental chamber at low temperature are using stainless steel, hot environment case it is interior
Wall uses engineering plastics ABS plate using the heat shield panel that can be dismantled, the inner wall of environmental chamber at low temperature；Thermal insulation board uses ceramic insulation
Plate.
Compared with prior art, the utility model has technique effect beneficial below：
The utility model sets heating unit and refrigeration system respectively by setting hot environment case and environmental chamber at low temperature
System, required temperature decrease and heating and cooling amplitude, can be controlled experimental temperature when can be by needing regulation experiment,
The utility model is adjusted experimental temperature using hot environment case and environmental chamber at low temperature, reaches in experimenter's ideal
Temperature shock；Meanwhile the situation by loading the actual road surface stand under load of simulated wheel, and load wheel and can move, Ke Yida
To the purpose for applying dynamic load, so as to complete the fatigue property test resisted to asphalt in the case of temperature shock；By setting
Displacement sensor, pressure sensor and control panel control different loading types, wherein, force snesor can obtain
Dynamic load confining pressure suffered by test specimen to be measured, displacement sensor can obtain the change in displacement of loading wheel, reach shear load
Size and the control of the size of displacement, so as to control different loading types, such as strain or iso-stress loading.
Further, the utility model by dividing into the first slide in test specimen loading plate, the right side sets connecting rod and reaches examination with this
Part is moved freely high and low temperature environment case；Meanwhile through hole is offered on the side wall of environmental cabinet, it can be used in test specimen loading plate cunning
Go out, facilitate being put into and taking out for test specimen.
Further, the utility model is equipped with the door with windowpane, can be tested convenient for sealed environment case and with Real Time Observation
Various situations in journey.
Further, different true loadings can be replaced to be threadedly coupled between the utility model transmission rod and loading wheel
Wheel applies dynamic pressure load to test specimen, and the actual driving wheel that can apply different contacts area carries, and passes through installing wheel platform sling
Deng making the operation of loading wheel controllable.
Further, the utility model at the angle of the bottom surface of environmental cabinet four by setting wheel and support base, convenient for instrument
Carrying, and stand when, retractable wheels put down support base, reduce the damage of wheel, and prevent instrument installation it is unstable.
Description of the drawings
Fig. 1 is the overall structure diagram of the utility model；
Fig. 2 is the refrigeration system schematic diagram of the utility model；
Fig. 3 (a) is the loading device schematic diagram of the utility model；Fig. 3 (b) is the side view of loading device；
Fig. 4 (a) is the door schematic diagram with windowpane of the utility model；Fig. 4 (b) is the test specimen loading plate of the utility model
Schematic diagram；
Fig. 5 is the hot environment case heating wire distribution map of the utility model；
Fig. 6 is the control panel schematic diagram of the utility model；
Fig. 7 is the utility model circuit control schematic diagram.
Wherein 1-1 hot environments case, 1-2 environmental chamber at low temperature, 2 loading wheels, 3 test specimen loading plates, 4 transmission rods, 5 heat-insulated
Plate, 6 first slides, 7 first pulleys, 8 wheels, 9 wheel platform slings, 10 heating wire, 11 temperature sensors, 12 displacement sensors, 13
Pressure sensor, 14 servo-type hydraulic presses, 15 connecting rods, 16 control panels, 17 location nuts, 18 doors with windowpane, 19
Support base, 20 conduits, 21 conducting wires, 22 evaporators, 23 filters, 24 compressors.
Specific embodiment
The utility model is described in further details below in conjunction with the accompanying drawings.
With reference to figure 1, the utility model includes environmental cabinet, loading wheel 2, test specimen loading plate 3, transmission rod 4, thermal insulation board 5, the
One slide 6, first pulley 7, wheel 8, wheel platform sling 9, heating wire 10, temperature sensor 11, displacement sensor 12, pressure sensing
Device 13, servo-type hydraulic press 14, connecting rod 15, control panel 16, location nut 17, the door 18 with windowpane, support base
19th, conduit 20, conducting wire 21, evaporator 22, filter 23, compressor 24, the second slide.Environmental cabinet is divided into high temperature by thermal insulation board 5
Environmental cabinet 1-1 and environmental chamber at low temperature 1-2 two parts.Thermal insulation board 5 is rotatable ceramic heat-insulation board, can be rotated high to its bottom
In test specimen loading plate 3.
Heating unit in hot environment case 1-1 is installed, refrigeration system is installed in environmental chamber at low temperature 1-2.
Hot environment case 1-1 inner walls use detachable heat shield panel, reduce the experiment residue pair that may be dropped in experimentation
The pollution of heating wire 10；Outer wall uses stainless steel material, plays the role of supporting box, and closed environment case.
For environmental chamber at low temperature 1-2 with hot environment case 1-1 using identical outer wall materials, inner wall uses engineering plastics ABS plate.
Evaporator 22 is located between environmental chamber at low temperature 1-2 inside and outside walls, and is connected to form back with filter 23, compressor 24 and pipeline
Road filled with condensate liquid in circuit, forms refrigeration system, as shown in Figure 2.Filter 23 and compressor 24 are respectively positioned on hot environment
Between case 1-1 inner walls and outer wall, wherein, compressor 24 is located between hot environment case 1-1 inside and outside walls, can provide certain temperature
Degree, reduces the consumption of energy.
It loads wheel 2 and first power set is connected by transmission rod 4；Test specimen loading plate 3 is arranged with the first slide 6, examination
It is equipped on the side wall of part loading plate 3 and passes through connecting rod 15 with 6 matched first pulley 7 of the first slide, test specimen loading plate 3
The second power set are connected, the through hole skidded off for test specimen loading plate 3 is offered on the side wall of environmental cabinet, environmental cabinet offers logical
The side wall in hole is equipped with the door 18 with windowpane.First power set and the second power set use servo-type hydraulic press 14.
Test specimen loading plate 3 can slidably reciprocate in the horizontal direction, it is ensured that test specimen is in hot environment case 1-1 and environmental chamber at low temperature 1-2
It slidably reciprocates.
Four wheels 8 are located at four angles of environmental cabinet bottom respectively, when needing mobile instrument, play the work for reducing friction
With；Four support bases 19 are located at the outside of four wheels 8 respectively, play the role of retainer instrument, instrument slips is avoided to cause
It destroys.
Wheel platform sling 9 is located at environmental cabinet inner top, and 9 front and rear sides of wheel platform sling pass through second pulley and the second slide phase
Even, the second slide is mounted on environment box wall, and transmission rod 4 passes through wheel platform sling 9；Two servo-type hydraulic presses 14 are respectively positioned on
1 outside of environmental cabinet, transmission rod 4 provide horizontal movement power, while servo-type hydraulic pressure by hydraulic servo-machine 14 for loading wheel 2
Machine 14 controls loading wheel 2 to be applied to the pressure on test specimen by conduit 20, to simulate actual vehicle load action to road surface
On pressure.
Temperature sensor 11 is located in hot environment case 1-1 and environmental chamber at low temperature 1-2 respectively, and positioned at test specimen loading plate 3
Upper right side.Loading wheel 2 is connected by transmission rod 4 with servo-type hydraulic press 14, as shown in Fig. 3 (a) and Fig. 3 (b), transmission rod 4
Upper attached displacement sensor 12 and pressure sensor 13, loading wheel 2 can carry according to the different axis in different regions and select different wheels
Tire, loading wheel 2 can treat test block and apply pressure and slidably reciprocate in the horizontal direction.
Referring to Fig. 4 (a), the door 18 with windowpane is located on the side wall of environmental cabinet, is conveniently replaceable loading wheel 2, places examination
Part and the sealed environment case in test, and can be with the various situations in Real Time Observation experimentation.Referring to Fig. 4 (b), test specimen is held
Support plate 3 is rectangle drawer-type structure, and convenient for placing test specimen to be measured, test specimen loading plate 3 is located at the lower section of loading wheel 2, positioning
Nut 17 is located at 3 right side two-end-point position of test specimen loading plate, plays the role of fixed test specimen.The utility model uses cuboid
The test specimen to be measured of shape can reflect the force-bearing situation of pavement structure well.
Referring to Fig. 5, heating wire 10 is arranged between hot environment case 1-1 inner walls and outer wall, in two side wall panels and underside wall
Heating wire 10 is uniformly arranged in plate, to reach uniformly heated effect.
Referring to Fig. 6 and Fig. 7, control panel 16 is located on the outside of environmental cabinet and passes through conducting wire 21 and temperature sensor 11, displacement
Sensor 12, pressure sensor 13 are connected with time set, temperature sensor 11, displacement sensor 12 and pressure sensor 13 by
The regulation and control of control panel 16.There are wheel rising switch, power switch, high-temperature cabinet temp control switch, low temperature on control panel 16
Case temp control switch, wheel velocity switch, pressure size switch, high temperature loaded switches and low temperature loaded switches, also have temperature
Display screen, pressure display screen and time display screen, and it is correspondingly arranged on temp control switch, Loading Control in each display screen one side
Switch and time control switch.Control panel 16 is controlled by time set is located at hot environment case 1-1 and low temperature environment respectively
Time in case 1-2.
Wheel 2 is loaded by the way that the transmission rod 4 of wheel platform sling 9 is passed through to be connected on servo-type hydraulic press 14, passes through servo-type
Hydraulic press 14 is further applied load to loading wheel 2, provides the shearing force needed for experiment, passes through servo-type hydraulic press 14, wheel platform sling 9
It is engaged with the second slide, loading 2 level of wheel is driven to slidably reciprocate, so as to achieve the purpose that apply dynamic load；It is located at
The connecting rod 15 of environmental cabinet inner right side is adjusted test specimen position by servo-type hydraulic press 14, and reaching test specimen can be certainly
By the purpose moved back and forth in high and low temperature environment case, while have displacement sensor 12 and pressure sensor on loading wheel 2
13, the variation in experimentation is controlled in real time, and records data.Heating is provided in the double-deck clamping plate of hot environment case 1-1 to use
Heating wire 10, and temperature is regulated and controled according to temperature sensor.Location nut 17 positioned at the right side of test specimen loading plate 3 can be with
Test specimen is fixed on to the position specified, in order to avoid test specimen generates extra movement, evaporation is provided between environmental chamber at low temperature 1-2 inside and outside walls
Device 22, into the reduction of trip temperature.
The use process of the utility model is：Power on, open the door 18 with windowpane, pass through requirement of experiment, selection
Suitable loading wheel 2, after replacement, test specimen is put into, and is passed through location nut 17 and securely fixed test specimen, in order to avoid production
Raw extra displacement, shuts the door 18 with windowpane, and the setting of test parameters is carried out by control panel 16, selects suitable real
Test temperature, the speed for loading wheel, wheel load size and the time in hot environment case 1-1 and environmental chamber at low temperature 1-2.
Finally, the start button clicked on control panel 16 is tested.
The utility model with the situation of the actual road surface stand under load of the simulated wheel of re-type by that can consider tire pressure and wheel
The influence of tire decorative pattern, and can achieve the purpose that application dynamic load using slide.It can also be according to actual conditions to dynamic load
Speed is controlled and adjusted.Control is carried out to the size of load by transmission rod and servo-type hydraulic press to reach in different forms
The purpose of loading.The purpose that the fatigue behaviour that asphalt in the case of temperature shock can be resisted by being finally reached is tested.
Claims (10)
1. a kind of asphalt fatigue loading device of simulated environment temperature shock, it is characterised in that：Including environmental cabinet, environment
The test specimen loading plate (3) that can be slidably reciprocated in the horizontal direction is provided in case；Environmental cabinet is separated by thermal insulation board (5) and forms high temperature
Environmental cabinet (1-1) and environmental chamber at low temperature (1-2), hot environment case (1-1) be mounted in environmental chamber at low temperature (1-2) can be right
Test specimen to be measured applies pressure and the loading wheel (2) to slidably reciprocate in the horizontal direction, and loading wheel (2) is located at test specimen loading plate
(3) top, loading wheel (2) connect the first power set by transmission rod (4)；Thermal insulation board (5) can be rotated to its bottom
Higher than test specimen loading plate (3)；
Heating unit in hot environment case (1-1) is installed, refrigeration system is installed in environmental chamber at low temperature (1-2)；
Temperature sensor (11) is respectively mounted in hot environment case (1-1) and environmental chamber at low temperature (1-2), transmission rod is equipped on (4)
Displacement sensor (12) and pressure sensor (13), temperature sensor (11), displacement sensor (12) and pressure sensor (13)
It is all connected with control panel (16).
2. a kind of asphalt fatigue loading device of simulated environment temperature shock according to claim 1, feature
It is：Hot environment case (1-1) contains inner and outer wall with environmental chamber at low temperature (1-2)；Heating unit includes being arranged at high temperature
Heating wire (10) of the environmental cabinet (1-1) between inner wall and outer wall；Refrigeration system include be mounted on environmental chamber at low temperature (1-2) inner wall with
Evaporator (22) between outer wall, evaporator (22) passes sequentially through pipe-and-filter (23) and compressor (24) connection is formed back
Road is filled with condensate liquid in circuit.
3. a kind of asphalt fatigue loading device of simulated environment temperature shock according to claim 2, feature
It is：Compressor (24) is located between the inner and outer wall of hot environment case (1-1).
4. a kind of asphalt fatigue loading device of simulated environment temperature shock according to claim 1, feature
It is：First slide (6) on the madial wall of environmental cabinet is set, is equipped on the side wall of test specimen loading plate (3) and the first slide (6)
Matched first pulley (7), test specimen loading plate (3) connect the second power set, the side of environmental cabinet by connecting rod (15)
The through hole skidded off for test specimen loading plate (3) is offered on wall.
5. a kind of asphalt fatigue loading device of simulated environment temperature shock according to claim 4, feature
It is：The side wall that environmental cabinet offers through hole is equipped with the door (18) with windowpane.
6. a kind of asphalt fatigue loading device of simulated environment temperature shock according to claim 4, feature
It is：First power set and the second power set use servo-type hydraulic press (14).
7. a kind of asphalt fatigue loading device of simulated environment temperature shock according to claim 1, feature
It is：The second slide of installation at the top of environmental cabinet, the second slide connect wheel platform sling (9) by second pulley, and transmission rod (4) passes through
Wheel platform sling (9)；It is threaded connection between transmission rod (4) and loading wheel (2).
8. a kind of asphalt fatigue loading device of simulated environment temperature shock according to claim 1, feature
It is：Location nut (17) is installed on the side wall of test specimen loading plate (3).
9. a kind of asphalt fatigue loading device of simulated environment temperature shock according to claim 1, feature
It is：There are four wheel (8) and four support bases (19) for the installation of environmental cabinet bottom；Control panel (16) is also associated with timing dress
It puts.
10. a kind of asphalt fatigue loading device of simulated environment temperature shock according to claim 1, feature
It is：Hot environment case (1-1) and the outer wall materials of environmental chamber at low temperature (1-2) use stainless steel, hot environment case (1-1)
Inner wall uses engineering plastics ABS plate using the heat shield panel that can be dismantled, the inner wall of environmental chamber at low temperature (1-2)；Thermal insulation board (5) uses
Ceramic heat-insulation board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721618711.0U CN207439831U (en) | 2017-11-28 | 2017-11-28 | A kind of asphalt fatigue loading device of simulated environment temperature shock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721618711.0U CN207439831U (en) | 2017-11-28 | 2017-11-28 | A kind of asphalt fatigue loading device of simulated environment temperature shock |
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| Publication Number | Publication Date |
|---|---|
| CN207439831U true CN207439831U (en) | 2018-06-01 |
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ID=62284783
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721618711.0U Expired - Fee Related CN207439831U (en) | 2017-11-28 | 2017-11-28 | A kind of asphalt fatigue loading device of simulated environment temperature shock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207439831U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107817169A (en) * | 2017-11-28 | 2018-03-20 | 长安大学 | The asphalt fatigue loading device of simulated environment temperature shock |
| CN110031323A (en) * | 2019-04-22 | 2019-07-19 | 许昌学院 | Microcomputer controlled electro-hydraulic servo bituminous pavement emulates accelerated fatigue test system |
| CN110702838A (en) * | 2019-10-11 | 2020-01-17 | 唐山公路建设总公司市站公司 | Steel slag test piece determinator and determination method |
-
2017
- 2017-11-28 CN CN201721618711.0U patent/CN207439831U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107817169A (en) * | 2017-11-28 | 2018-03-20 | 长安大学 | The asphalt fatigue loading device of simulated environment temperature shock |
| CN110031323A (en) * | 2019-04-22 | 2019-07-19 | 许昌学院 | Microcomputer controlled electro-hydraulic servo bituminous pavement emulates accelerated fatigue test system |
| CN110702838A (en) * | 2019-10-11 | 2020-01-17 | 唐山公路建设总公司市站公司 | Steel slag test piece determinator and determination method |
| CN110702838B (en) * | 2019-10-11 | 2022-07-01 | 唐山公路建设总公司市站公司 | Steel slag test piece determinator and determination method |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180601 Termination date: 20181128 |
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| CF01 | Termination of patent right due to non-payment of annual fee |