CN202770716U - Integrated asphalt mixture performance testing device - Google Patents
Integrated asphalt mixture performance testing device Download PDFInfo
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- CN202770716U CN202770716U CN 201220493049 CN201220493049U CN202770716U CN 202770716 U CN202770716 U CN 202770716U CN 201220493049 CN201220493049 CN 201220493049 CN 201220493049 U CN201220493049 U CN 201220493049U CN 202770716 U CN202770716 U CN 202770716U
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- asphalt mixture
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Abstract
The utility model relates to an integrated asphalt mixture performance testing device. A test piece is placed at the center of a rotatable loading mechanism, tensile resistance, compressive resistance and tensile shear and compressive shear resistance of the test piece can be detected according to deformation of a strain gauge by a load sensor, the performances of the test piece can be detected by adjusting rotation angles of a left loading disc and a right loading disc at different angles, and accordingly, the influence of load at different angles on the test piece is measured.
Description
Technical field
The utility model belongs to the Performance Detection technical field of highway engineering bituminous pavement, particularly relates to detection method and the device of a kind of asphalt tension, resistance to compression and multi-angle anti-shear performance.
Background technology
Along with the development of road cause, China's road total kilometrage number constantly increases, and quality grade also improves constantly, and Asphalt Pavement Damage more and more comes into one's own.At the large bituminous pavement of some volume of traffic, especially at summer high temperature, more easily produce rut, gather around the diseases such as bag, passing, pavement strength is reduced.The generation of these diseases is not only because the impact of external environment factor also comprises the load force that comes from vehicle.And the direction of this power is not only perpendicular to the road surface direction, also comprises the direction that is parallel to the road surface direction and becomes various angles with the road surface.The shearing action of road surface under tension, pressure and various angles thus.Existence just because of these power causes the road surface that various destructions easily occur.Estimate the acting force of all angles for the impact of Pavement Performance so be necessary to propose a kind of method.
Detection for Pavement Performance is to utilize triaxial test, Superpave shear test, coaxial shear test, rotational shear test, single shaft penetration type test philosophy to detect the shear behavior on road surface mostly at present.
Triaxial test: by the cohesive force of measuring compound and the shearing strength that angle of internal friction is calculated compound, but this test operation is complicated, uses less.
The Superpave shear test: mainly carry out perseverance and highly repeat shear test and the test of permanent height frequency sweeping, test specimen is fixed between two steel plates, applies external force in end face and the bottom surface of test specimen, but this test instrument is expensive, is unsuitable for promoting.
The coaxial shear test: this test method is that a hollow circular cylinder test specimen is sticked between steel cylinder and the steel column with epoxy resin, xial feed acts on hollow circular cylinder test specimen inwall by steel column, the lateral surface of test specimen is limited simultaneously, make test specimen produce shear failure, pass through Three-dimensional finite element modeling, calculative determination coaxial shear test shear strength factor, thus determine shearing strength.The method precision is good but aggregate that particle diameter is large has larger impact to test findings, and the method is used less.
The rotational shear test: this test is at rotary compactor one cover system to be installed, and is used for measuring the shear stress of asphalt compacting process, because equipment price is expensive, does not have at present widespread use.
Single shaft penetration type test: the loading pressure head of test instrument in loading procedure, has taken into full account the impact of sidewise restraint much smaller than test specimen, but also can't measure the shear behavior of test specimen multi-angle under stressed.
Utility model people finds in R﹠D process, all there is following problem in above-mentioned several detection tests: it only can measure horizontal shear performance and the vertical shear performance of test specimen, and the road surface not only is subject to the effect of horizontal and vertical power under actual conditions, also be subject to the power of other all angles direction, and be not only that pressure or pulling force also have shearing force, and, its function singleness, only can detect a kind of performance, can only test respectively with different instruments for different performance, therefore need a kind of simple, the pick-up unit of economic integration is estimated the asphalt tension, the characteristic of resistance to compression and each angle anti-shearing force.
The utility model content
The utility model is in order to overcome existing deficiency in the performance of asphalt mixture testing process of the prior art, and the performance of asphalt mixture pick-up unit of a kind of integral multifunctional of tension, resistance to compression and anti-shear performance that can the comprehensive detection asphalt is provided.
The technical scheme of technical solution problem of the present utility model is: this integral type performance of asphalt mixture pick-up unit is to be fixed with support at base by securing member, by lower retention mechanism rotary load maintainer is installed, the upper end of rotary load maintainer connects by the hydraulic jack on tightening mechanism and being fixed on support, be provided with load transducer at upper fixed mechanism, load transducer links to each other with two input ends of data acquisition unit by wire respectively with the foil gauge that is installed in test specimen to be measured side, the output terminal of data acquisition unit links to each other with the input port of computing machine by wire, the output port of computing machine links to each other with hydraulic controller by wire, and hydraulic controller links by pipeline and hydraulic jack.
Above-mentioned rotary load maintainer is: be provided with right loading disc on the right side of left loading disc, consist of a disk, be provided with objective table between left loading disc and the right loading disc, the edge of left loading disc and right loading disc is processed with lower retention mechanism and tightens the hole clipping that mechanism overlaps.
The above-mentioned mechanism that tightens is: be installed on the upper fixed seat on the load output shaft of load gear train and be provided with the upper limit bar, be provided with the upper limit projection with the hole clipping overlap joint of left loading disc or right loading disc on the upper limit bar.
Above-mentioned lower retention mechanism is: be provided with the lower limit bar on the lower fixed seat on the mounting seat, be provided with the lower limit projection with the hole clipping of left loading disc or right loading disc overlap joint on the lower limit bar.
Above-mentioned hole clipping is uniform being arranged on the same circumference along the edge of left loading disc and right loading disc.
The right-hand member of above-mentioned left loading disc is stepped appearance, and the left end of right loading disc is that stepped appearance is corresponding with the right-hand member of left loading disc.
Integral type performance of asphalt mixture pick-up unit of the present utility model is the center that test specimen is placed on the rotary type load maintainer, when applying the power of different angles, stretching resistance, compressive resistance, the tension that just can detect by the deformation of load transducer, foil gauge test specimen cut and pressed the performance of cutting, can realize the test specimen Performance Detection of different angles by the anglec of rotation of adjusting left loading disc and right loading disc, thereby measure the load of different angles for the impact of test specimen.
Description of drawings
Fig. 1 is apparatus structure schematic diagram of the present utility model.
Fig. 2 is the structural representation of the lower retention mechanism among Fig. 1.
Fig. 3 is the left view of Fig. 2.
Fig. 4 is the structural representation of rotary load maintainer among Fig. 1.
Fig. 5 tightens the mechanism structure schematic diagram among Fig. 1.
Fig. 6 is the left view of Fig. 5.
Embodiment
Now in conjunction with the accompanying drawings and embodiments the utility model is further specified, but the utility model is not limited only to following embodiment.
Embodiment 1
Referring to Fig. 1, the integral type performance of asphalt mixture pick-up unit in the present embodiment by base 1, lower retention mechanism 2, rotary load maintainer 3, foil gauge 4, tighten mechanism 5, load transducer 6, support 7, hydraulic jack 8, hydraulic controller 9, computing machine 10, data acquisition unit 11 and connect and consist of.
On base 1 with the threaded fastener lower retention mechanism 2 that has been fixedly connected, referring to Fig. 2 and 3, lower retention mechanism 2 is to be connected by lower fixed seat 2-1, lower limit bar 2-2 and lower limit projection 2-3 to consist of, lower fixed seat 2-1 is fixed on the base 1 by threaded fastener, the upper end of lower fixed seat 2-1 is curved, the both sides of lower fixed seat 2-1 respectively are installed with 1 lower limit bar 2-2 with bolt, the upper inner of two lower limit bar 2-2 is provided with lower limit projection 2-3, the degree of tightness that the twisting bolt can be regulated lower limit bar 2-2.Arc tips at lower fixed seat 2-1 is provided with rotary load maintainer 3.
Fig. 4 has provided the structural representation of rotary load maintainer 3, referring to Fig. 4, in Fig. 4, the rotary load maintainer 3 of the present embodiment is by left loading disc 3-1, objective table 3-2, cushion rubber 3-3, right loading disc 3-4 connects formation, the right-hand member of left loading disc 3-1 is stepped appearance, the left end of right loading disc 3-4 is that stepped appearance is corresponding with the right-hand member of left loading disc 3-1, left loading disc 3-1 is symmetrical arranged by cushion rubber 3-3 with right loading disc 3-4 and connects, between the left loading disc 3-1 in the center of disk and right loading disc 3-4, objective table 3-2 is installed, the outer rim of left loading disc 3-1 and right loading disc 3-4 is in the arc-shaped, be spliced to form a disk, the outer, bottom of left loading disc 3-1 is installed in the upper end of lower fixed seat 2-1, fit tightly together, guarantee left loading disc 3-1 stress equalization, in the uniform circle hole clipping that is processed with of the card edge of left loading disc 3-1 and right loading disc 3-4, the center of circle of hole clipping is positioned on the same circumference.Lower limit projection 2-3 just in time is stuck in the hole clipping of left loading disc 3-1, tightens the bolted lower limit bar 2-2 on the lower limit bar 2-2, and left loading disc 3-1 is fixed on the base 1.The structure that tightens mechanism 5 is identical with the structure of lower retention mechanism 2.
Fig. 5,6 has provided the structural representation that tightens mechanism 5, referring to Fig. 5 and Fig. 6, in Fig. 5,6, the mechanism 5 that tightens of the present embodiment is made of upper fixed seat 5-1, upper limit bar 5-2, upper limit projection 5-3 connection, the bottom of upper fixed seat 5-1 is curved, coincide with the outer of right loading disc 3-4, upper fixed seat 5-1 connects with upper limit bar 5-2 by bolt, the end of upper limit bar 5-2 is processed with upper limit projection 5-3, upper limit projection 5-3 is stuck in the hole clipping of right loading disc 3-4, fastening upper limit bar 5-2 fixes right loading disc 3-4.
Tighten mechanism 5 above be provided with hydraulic jack 8, hydraulic jack 8 is fixed on the rectangle support by threaded fastener, the expansion link of hydraulic jack 8 connects by connector with the top that tightens mechanism 5, and load is delivered on the right loading disc 3-4 by tightening mechanism 5.Hydraulic jack 8 links by pipeline and hydraulic controller 9, and hydraulic controller 9 links to each other with a port of computing machine 10 by wire, and the hydraulic control signal that receiving computer 10 sends is controlled hydraulic jack by the folding of electromagnetic valve.Load transducer 6 also is installed tightening in the mechanism 5, load transducer 6 links to each other with an input port of data acquisition unit 11 by wire, another input port of data acquisition unit 11 links to each other with foil gauge 4 on sticking on the bitumen mixture specimen leading flank by wire, receive the signal that load transducer 6 and foil gauge 4 transmit, the output terminal of data acquisition unit 11 links to each other with computing machine 10 by wire.The force signal that load transducer 6 will receive load gear train 7 converts electric signal to and outputs to data acquisition unit 11, and data acquisition unit 11 specially changes the electric signal of input into digital signal and outputs to computing machine 10.Foil gauge 4 converts displacement signal to electric signal transmission to data acquisition unit 11 when bitumen mixture specimen produces deformation under pressure or torsional shear effect, and data acquisition unit 11 specially changes the electric signal of inputting into the digital signal signal and outputs to computing machine 10.
When detecting, be fixed on the objective table 3-2 with the bitumen mixture specimen of epoxy resin with moulding, and foil gauge 4 is sticked on the leading flank of bitumen mixture specimen, unclamp the bolt that tightens mechanism 5 and lower retention mechanism 2, rotate left loading disc 3-1 and right loading disc 3-4, the objective table 3-2 level of adjustment between left loading disc 3-1 and right loading disc 3-4, the angle β that is bitumen mixture specimen and horizontal direction is 0 °, tight a bolt, the operation signal that hydraulic controller 9 receiving computers 10 send, electromagnetic valve is opened, the piston rod of hydraulic jack 8 begins to move downward at vertical direction, transmission of pressure is given on the right loading disc 3-4, right loading disc 3-4 applies pressure to downwards on the objective table 3-2, bitumen mixture specimen is subject to producing deformation after the pressure extrusion of perpendicular direction, foil gauge 4 converts the displacement signal of bitumen mixture specimen deformation to electric signal and sends to data acquisition unit 11, simultaneously, load transducer 6 receives the stress signal that is applied on the bitumen mixture specimen and converts electric signal transmission to data acquisition unit 11, the electric signal that data acquisition unit 11 receives converts digital signal to and outputs to computing machine 10, and computing machine 10 carries out data with the digital signal of input again and processes the compressive property of calculating and demonstrating bitumen mixture specimen.In like manner, become flexible again the bolt that tightens mechanism 5 and lower retention mechanism 2, adjust left loading disc 3-1 and right loading disc 3-4 fixing in other hole clipping, the baroclining of angle β direction that then can detect corresponding test specimen and horizontal direction made the anti-shear performance of time spent.When β is 90 °, when test specimen is vertical with horizontal direction, can records bitumen mixture specimen and be subject to horizontal pressure force and do the anti-shear performance of time spent.
When left loading disc 3-1 and right loading disc 3-4 act on the test specimen be pulling force the time, can detect the tensile property of bitumen mixture specimen under the pulling force effect of corresponding lower respective direction.
Embodiment 2
In the present embodiment, the two ends, right side of left loading disc 3-1 are provided with snap fit, and the two ends, left side of right loading disc 3-4 are provided with snap ring, connect with snap ring by snap fit between left loading disc 3-1 and the right loading disc 3-4, consist of a disk.The card of left loading disc 3-1 and right loading disc 3-4 can also be arranged to the draw-in groove on the same circumference along the edge, lower limit projection 2-3 just in time is stuck in the draw-in groove of left loading disc 3-1, upper limit projection 5-3 just in time is stuck in the draw-in groove of right loading disc 3-4, tighting a bolt can be with left loading disc 3-1 and right loading disc 3-4 chucking, prevent that it from rotating when being under pressure, guaranteeing that testing result is reliable.Other parts and connecting relation thereof are identical with embodiment 1.
Claims (6)
1. integral type performance of asphalt mixture pick-up unit, it is characterized in that: be fixed with support (7) at base (1) by securing member, by lower retention mechanism (2) rotary load maintainer (3) is installed, the upper end of rotary load maintainer (3) connects by the hydraulic jack (8) on tightening mechanism (5) and being fixed on support (7), be provided with load transducer (6) at upper fixed mechanism (5), load transducer (6) links to each other with two input ends of data acquisition unit (11) by wire respectively with the foil gauge that is installed in test specimen to be measured side (4), the output terminal of data acquisition unit (11) links to each other by the input port of wire with computing machine (10), the output port of computing machine (10) links to each other with hydraulic controller (9) by wire, and hydraulic controller (9) links by pipeline and hydraulic jack (8).
2. integral type performance of asphalt mixture pick-up unit according to claim 1, it is characterized in that described rotary load maintainer (3) is: be provided with right loading disc (3-4) on the right side of left loading disc (3-1), consist of a disk, be provided with objective table (3-2) between left loading disc (3-1) and the right loading disc (3-4), the edge of left loading disc (3-1) and right loading disc (3-4) is processed with lower retention mechanism (2) and tightens the hole clipping that mechanism (5) overlaps.
3. integral type performance of asphalt mixture pick-up unit according to claim 1, it is characterized in that the described mechanism (5) that tightens is: be installed on the upper fixed seat (5-1) on the load output shaft of load gear train (7) and be provided with upper limit bar (5-2), be provided with the upper limit projection (5-3) with the hole clipping overlap joint of left loading disc (3-1) or right loading disc (3-4) on the upper limit bar (5-2).
4. integral type performance of asphalt mixture pick-up unit according to claim 1, it is characterized in that described lower retention mechanism (2) is: be provided with lower limit bar (2-2) on the lower fixed seat (2-1) on the mounting seat (1), be provided with the lower limit projection (2-3) with the hole clipping of left loading disc (3-1) or right loading disc (3-4) overlap joint on the lower limit bar (2-2).
5. according to claim 2 or 3 or 4 described integral type performance of asphalt mixture pick-up units, it is characterized in that: described hole clipping is along uniform being arranged on the same circumference in edge of left loading disc (3-1) and right loading disc (3-4).
6. according to claim 2 or 3 or 4 described integral type performance of asphalt mixture pick-up units, it is characterized in that: the right-hand member of described left loading disc (3-1) is stepped appearance, and the left end of right loading disc (3-4) is that stepped appearance is corresponding with the right-hand member of left loading disc (3-1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220493049 CN202770716U (en) | 2012-09-21 | 2012-09-21 | Integrated asphalt mixture performance testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220493049 CN202770716U (en) | 2012-09-21 | 2012-09-21 | Integrated asphalt mixture performance testing device |
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| Publication Number | Publication Date |
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| CN202770716U true CN202770716U (en) | 2013-03-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220493049 Expired - Fee Related CN202770716U (en) | 2012-09-21 | 2012-09-21 | Integrated asphalt mixture performance testing device |
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| CN (1) | CN202770716U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102879276A (en) * | 2012-09-21 | 2013-01-16 | 长安大学 | Integrated asphaltic mixture performance detection device |
| CN109580392A (en) * | 2019-01-25 | 2019-04-05 | 河南交院工程技术有限公司 | A kind of hydraulic pressure-shear test machine |
| CN110320102A (en) * | 2019-06-19 | 2019-10-11 | 太原理工大学 | The test device and application method of compound drawing/compression shear under any angle |
| CN112903463A (en) * | 2021-02-04 | 2021-06-04 | 太原理工大学 | Double-shaft static force-disturbance coupling inclined goaf group column bearing test device and method |
| CN115389326A (en) * | 2022-08-26 | 2022-11-25 | 南通星球石墨股份有限公司 | Heat exchange tube pressure testing frock with angle modulation function |
-
2012
- 2012-09-21 CN CN 201220493049 patent/CN202770716U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102879276A (en) * | 2012-09-21 | 2013-01-16 | 长安大学 | Integrated asphaltic mixture performance detection device |
| CN109580392A (en) * | 2019-01-25 | 2019-04-05 | 河南交院工程技术有限公司 | A kind of hydraulic pressure-shear test machine |
| CN109580392B (en) * | 2019-01-25 | 2023-08-25 | 河南交通职业技术学院 | Hydraulic pressure shear test machine |
| CN110320102A (en) * | 2019-06-19 | 2019-10-11 | 太原理工大学 | The test device and application method of compound drawing/compression shear under any angle |
| CN110320102B (en) * | 2019-06-19 | 2022-03-18 | 太原理工大学 | Testing device for composite tension/compression shear at any angle and using method |
| CN112903463A (en) * | 2021-02-04 | 2021-06-04 | 太原理工大学 | Double-shaft static force-disturbance coupling inclined goaf group column bearing test device and method |
| CN115389326A (en) * | 2022-08-26 | 2022-11-25 | 南通星球石墨股份有限公司 | Heat exchange tube pressure testing frock with angle modulation function |
| CN115389326B (en) * | 2022-08-26 | 2023-08-25 | 南通星球石墨股份有限公司 | Heat exchange tube pressure testing tool with angle adjusting function |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130306 Termination date: 20130921 |