CN202793937U - Measuring device for bending creep rate of large-deformation bituminous mixture - Google Patents
Measuring device for bending creep rate of large-deformation bituminous mixture Download PDFInfo
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- CN202793937U CN202793937U CN 201220525664 CN201220525664U CN202793937U CN 202793937 U CN202793937 U CN 202793937U CN 201220525664 CN201220525664 CN 201220525664 CN 201220525664 U CN201220525664 U CN 201220525664U CN 202793937 U CN202793937 U CN 202793937U
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Abstract
The utility model discloses a measuring device for the bending creep rate of a large-deformation bituminous mixture. The measuring device is characterized in that a support (1) is arranged on an environmental cabinet (15), a supporting seat (4) is fixed in the environmental cabinet (15), a bituminous mixture test specimen (13) is arranged on the supporting seat (4), one end of a cross pressing beam (11) is movably arranged on the support (1), a counter weight (6) is arranged at the other end of the cross pressing beam (11), a dowel bar (5) is arranged on the cross pressing beam (11), a steel disc (14) is fixed at the bottom end of the dowel bar (5) and is in contact with the bituminous mixture test specimen (13), and a detection device (7) is connected with the top end of the dowel bar (5). The measuring device has the advantages that the measuring device is suitable for measuring the bending creep rate of the large-deformation bituminous mixture, measurement results are accurate and simple, and the cost is low.
Description
Technical field
The utility model relates to bending creep speed measurement device, is specifically related to a kind of large deformation asphalt bending creep speed measurement device.
Background technology
Bending creep speed is to estimate an important indicator of pitch mixed material cracking resistance, also is an important evaluation index of Service Performance of Asphalt Pavement, and the bending creep test macro then is the nucleus equipment of measuring asphalt bending creep speed.The equipment of current mensuration asphalt bending creep speed only can be measured girder mid-span deflection or the less asphalt of flexural-tensile strain, can't finish the macrobending creep test of high viscoelasticity asphalt.Have the characteristics such as the large and viscoelasticity of girder mid-span deflection or flexural-tensile strain is strong during high viscoelasticity asphalt creep test, present sensing equipment is unfavorable for the cracking resistance of some high viscoelasticity asphalt of deep study and analysis.The asphalt of present high viscoelasticity energy has been used a lot of fields of China, is widely used in the road engineering field of China especially.Therefore, be necessary to design the macrobending creep test device that a cover is measured high viscoelasticity asphalt.
The utility model content
The purpose of this utility model namely is to overcome the deficiency that prior art can't effectively be measured the cracking resistance of high viscoelasticity asphalt, and a kind of large deformation asphalt bending creep speed measurement device is provided.
The purpose of this utility model is achieved through the following technical solutions:
A kind of large deformation asphalt bending creep speed measurement device, it comprises support, bearing, transmission rod, counterweight, pick-up unit, horizontal pressure beam, steel disc and environmental cabinet, support is arranged on the environmental cabinet, bearing is fixed in the environmental cabinet, bitumen mixture specimen is arranged on the bearing, one end of horizontal pressure beam is movably arranged on the support, counterweight is arranged on the other end of horizontal pressure beam, transmission rod is arranged on the horizontal pressure beam, the bottom of transmission rod is fixed with steel disc, steel disc contacts with bitumen mixture specimen, and pick-up unit is connected with the top of transmission rod.
Further, described transmission rod is vertical with described bitumen mixture specimen.
Further, the center of described transmission rod, pick-up unit and bitumen mixture specimen is on same pedal line.
Further, the height of described bearing is greater than the amount of deflection of described bitumen mixture specimen.
Further, described measurement mechanism also comprises the pick-up unit anchor clamps, and the pick-up unit anchor clamps are fixed on the described support, and described pick-up unit is fixed on the pick-up unit anchor clamps.
Further, described pick-up unit is dial gauge or displacement transducer.
Further, described pick-up unit is connected with computing machine by data transmission link.
Further, described counterweight is slided and is arranged at the end of horizontal pressure beam, is provided with scale on the horizontal pressure beam.
Further, described counterweight is positioned over the end of horizontal pressure beam.
Advantage of the present utility model and beneficial effect are as follows:
1. the height of bearing is greater than the amount of deflection of bitumen mixture specimen, and the sag that bearing provides enough height to satisfy the large deformation asphalt is suitable for measuring large deformation asphalt bending creep speed;
2. counterweight is arranged on the outside of environmental cabinet, the convenient loading, and can not immerse in the liquid, avoided producing the impact that buoyancy causes measurement result because of counterweight;
3. simple in structure, with low cost.
Description of drawings
In order to be illustrated more clearly in embodiment of the present utility model, the below will make simple explanation to the required accompanying drawing of using among description the utility model embodiment.Apparent, the accompanying drawing in the following describes only is some embodiment that put down in writing in the utility model, to those skilled in the art, in the situation of not paying creative work, can also according to following accompanying drawing, obtain other accompanying drawing.
Fig. 1 is the structural representation of the utility model embodiment 1;
Wherein, the corresponding parts title of Reference numeral is as follows:
The 1-support, 2-articulated joint, 3-stand apparatus, 4-bearing, 5-transmission rod, the 6-counterweight, 7-pick-up unit, 8-pick-up unit anchor clamps, 9-data transmission link, 10-bolt, the horizontal pressure beam of 11-, 12-coupling arrangement, 13-bitumen mixture specimen, 14-steel disc, 15-environmental cabinet.
Embodiment
In order to make those skilled in the art understand better the utility model, below in conjunction with the accompanying drawing among the utility model embodiment the technical scheme among the utility model embodiment is carried out clear, complete description.Apparent, embodiment described below only is the part among the utility model embodiment, rather than all.Based on the embodiment of the utility model record, other all embodiment that those skilled in the art obtain in the situation of not paying creative work are all in the scope of the utility model protection.
Embodiment 1:
As shown in Figure 1, a kind of large deformation asphalt bending creep speed measurement device, it comprises support 1, stand apparatus 3, bearing 4, transmission rod 5, counterweight 6, pick-up unit 7, data transmission link 9, horizontal pressure beam 11, steel disc 14 and environmental cabinet 15, pick-up unit 7 is dial gauge, support 1 is arranged on the environmental cabinet 15, bearing 4 is fixed in the stand apparatus 3, bitumen mixture specimen 13 is arranged on the bearing 4, stand apparatus 3 is arranged in the environmental cabinet 15, one end of horizontal pressure beam 11 is installed on the support 1, counterweight 6 is placed on the other end of horizontal pressure beam 11, transmission rod 5 is arranged on the horizontal pressure beam 11, and the bottom of transmission rod 5 is fixed with steel disc 14, and steel disc 14 contacts with bitumen mixture specimen 13, the contact of dial gauge contacts with the top of transmission rod 5, and dial gauge is connected with computing machine by data transmission link 9.Above-mentioned transmission rod 5 is vertical with above-mentioned bitumen mixture specimen 13.The center of above-mentioned transmission rod 5, dial gauge and bitumen mixture specimen 13 is on same pedal line.The height of above-mentioned bearing 4 is greater than the amount of deflection of above-mentioned bitumen mixture specimen 13.Above-mentioned horizontal pressure beam 11 is installed on the above-mentioned support 1 by articulated joint 2, and above-mentioned transmission rod 5 is fixed on the above-mentioned horizontal pressure beam 11 by bolt 10, and above-mentioned bearing 4 is riveted on the stand apparatus 3.Above-mentioned measurement mechanism also comprises pick-up unit anchor clamps 8, and pick-up unit anchor clamps 8 are welded on the above-mentioned support 1, and above-mentioned dial gauge is fixed on the pick-up unit anchor clamps 8.Above-mentioned support 1 is fixed on the above-mentioned environmental cabinet 15 by coupling arrangement 12.
Transmission rod 5 and horizontal pressure beam 11 adopts high-strength materials to make, can bear more energetically situation under keep self can not being out of shape.Simultaneously, consider transmission rod 5 and the impact of horizontal pressure beam 11 self gravitations on test findings, be the accuracy of warranty test, use light material processing transmission rod 5 and horizontal pressure beam 11.
Counterweight 6 need select the material that is difficult for getting rusty to make owing to need long term exposure in air.Counterweight 6 is processed to the monomer of different quality, to be applicable to different situations.
Data acquisition need to satisfy the bending creep test requirement of large deformation bitumen mixture specimen 13,13 distortion of large deformation bitumen mixture specimen are larger, so need to have the dial gauge of relatively large journey to provide safeguard for test, adopting maximum range in the present embodiment is the dial gauge of 100mm.
The course of work is as follows:
At first test records the fail in bending load P of bitumen mixture specimen 13, a selected suitable bending load value (being generally 0.2P or 0.4P) is carried out bending creep test, calculate the counterweight 6 needed quality that load in the situation that will realize this power by lever principle afterwards, experimental liquid adjustment in the environmental cabinet 15 is arrived assigned temperature, in experimental liquid, put into bitumen mixture specimen 13, begin test behind the insulation certain hour.Counterweight 6 is loaded on the free end of horizontal pressure beam 11, test is carried out automatically, computing machine gathers the sag data of bitumen mixture specimen 13 by dial gauge, obtains bending creep speed according to the data obtained after the off-test.
Embodiment 2:
In the present embodiment, pick-up unit 7 is displacement transducer, and the top of transmission rod 5 is stretched in the measured hole of displacement transducer, records the sag data of bitumen mixture specimen 13 by the movement of transmission rod 5 in the measured hole of displacement transducer.Counterweight 6 is slided and is arranged on the horizontal pressure beam 11, is provided with scale on the horizontal pressure beam 11, by the slip of counterweight 6 on horizontal pressure beam, acts on moment size on the bitumen mixture specimen 13 by change, needn't frequent counterweight 6, use convenient.
Other technical conditions of present embodiment are identical with embodiment 1.
As mentioned above, just can realize preferably the utility model.
Claims (9)
1. large deformation asphalt bending creep speed measurement device, it is characterized in that: it comprises support (1), bearing (4), transmission rod (5), counterweight (6), pick-up unit (7), horizontal pressure beam (11), steel disc (14) and environmental cabinet (15), support (1) is arranged on the environmental cabinet (15), bearing (4) is fixed in the environmental cabinet (15), bitumen mixture specimen (13) is arranged on the bearing (4), one end of horizontal pressure beam (11) is movably arranged on the support (1), counterweight (6) is arranged on the other end of horizontal pressure beam (11), transmission rod (5) is arranged on the horizontal pressure beam (11), the bottom of transmission rod (5) is fixed with steel disc (14), steel disc (14) contacts with bitumen mixture specimen (13), and pick-up unit (7) is connected with the top of transmission rod (5).
2. a kind of large deformation asphalt bending creep speed measurement device according to claim 1, it is characterized in that: described transmission rod (5) is vertical with described bitumen mixture specimen (13).
3. a kind of large deformation asphalt bending creep speed measurement device according to claim 1 and 2, it is characterized in that: the center of described transmission rod (5), pick-up unit (7) and bitumen mixture specimen (13) is on same pedal line.
4. a kind of large deformation asphalt bending creep speed measurement device according to claim 3, it is characterized in that: the height of described bearing (4) is greater than the amount of deflection of described bitumen mixture specimen (13).
5. a kind of large deformation asphalt bending creep speed measurement device according to claim 1, it is characterized in that: described measurement mechanism also comprises pick-up unit anchor clamps (8), pick-up unit anchor clamps (8) are fixed on the described support (1), and described pick-up unit (7) is fixed on the pick-up unit anchor clamps (8).
6. according to claim 4 or 5 described a kind of large deformation asphalt bending creep speed measurement devices, it is characterized in that: described pick-up unit (7) is dial gauge or displacement transducer.
7. a kind of large deformation asphalt bending creep speed measurement device according to claim 6 is characterized in that: described pick-up unit (7) is connected with computing machine by data transmission link (9).
8. according to claim 1,2,4,5 or 7 described a kind of large deformation asphalt bending creep speed measurement devices, it is characterized in that: described counterweight (6) is slided and to be arranged at the end of horizontal pressure beam (11), is provided with scale on the horizontal pressure beam (11).
9. according to claim 1,2,4,5 or 7 described a kind of large deformation asphalt bending creep speed measurement devices, it is characterized in that: described counterweight (6) is positioned over the end of horizontal pressure beam (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220525664 CN202793937U (en) | 2012-09-19 | 2012-10-15 | Measuring device for bending creep rate of large-deformation bituminous mixture |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220478525.2 | 2012-09-19 | ||
| CN201220478525 | 2012-09-19 | ||
| CN 201220525664 CN202793937U (en) | 2012-09-19 | 2012-10-15 | Measuring device for bending creep rate of large-deformation bituminous mixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202793937U true CN202793937U (en) | 2013-03-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220525664 Expired - Fee Related CN202793937U (en) | 2012-09-19 | 2012-10-15 | Measuring device for bending creep rate of large-deformation bituminous mixture |
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| CN (1) | CN202793937U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104089829A (en) * | 2014-06-28 | 2014-10-08 | 长安大学 | Testing method and testing device for low-temperature cracking resistance performance of asphalt beam |
| CN106198904A (en) * | 2015-03-24 | 2016-12-07 | 以森有限公司 | Dough fermentation testing device |
| CN107831067A (en) * | 2017-10-31 | 2018-03-23 | 河南理工大学 | A kind of variable Three Point Bending Creep Test method of rock |
-
2012
- 2012-10-15 CN CN 201220525664 patent/CN202793937U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104089829A (en) * | 2014-06-28 | 2014-10-08 | 长安大学 | Testing method and testing device for low-temperature cracking resistance performance of asphalt beam |
| CN106198904A (en) * | 2015-03-24 | 2016-12-07 | 以森有限公司 | Dough fermentation testing device |
| CN107831067A (en) * | 2017-10-31 | 2018-03-23 | 河南理工大学 | A kind of variable Three Point Bending Creep Test method of rock |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130313 Termination date: 20151015 |
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| EXPY | Termination of patent right or utility model |