CN204944960U - A kind of device for testing asphalt concrete pavement material cutting performance - Google Patents
A kind of device for testing asphalt concrete pavement material cutting performance Download PDFInfo
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- CN204944960U CN204944960U CN201520563339.2U CN201520563339U CN204944960U CN 204944960 U CN204944960 U CN 204944960U CN 201520563339 U CN201520563339 U CN 201520563339U CN 204944960 U CN204944960 U CN 204944960U
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Abstract
The utility model discloses a kind of device for testing asphalt concrete pavement material cutting performance, at least comprise base, gear train, cutting mechanism and clamping device, gear train comprises servo electric jar, pressure transducer and leading screw, servo electric jar is fixed on base, be connected with the output shaft of servo electric jar bottom pressure transducer, top is connected with leading screw, cutting mechanism comprises fixed head, guide rail, slide block, loading plate and counterweight, fixed head and loading plate are all U-shaped, fixed head is fixed on base, loading plate is positioned at fixed head, guide rail and slide block all have two, two guide rails are separately fixed on fixed head, two slide blocks are separately fixed on loading plate, each slide block and the guide rail corresponding with it match, leading screw is fixed on loading plate through fixed head, clamping device comprises, lower platen, lower platen is arranged on base, on, lower platen is fastened by bolts.This apparatus structure is simple, can simulate bituminous concrete test specimen stressing conditions in practice more really.
Description
Technical field
The utility model relates to pavement engineering testing equipment technical field, is specifically related to a kind of device for testing asphalt concrete pavement material cutting performance.
Background technology
Current China highway mileage occupies the whole world second, bituminous concrete pavement accounts for 75% of high-grade highway, along with the increase of service time, usually there is the disease such as crack, hollow in road surface, treating method is Paving Bituminous Concrete material normally, and the position after overlaying can be subject to larger longitudinal fatigue load, the shear stress of generation very easily makes disease position that secondary damage occurs.
The current technology and equipment about shear stress is mainly tested for the shear stress of interlayer structure, can not obtain the shear stress of material structure, is not meet completely with the stressing conditions in Practical Project.When material character and intensity own constant, obtain knot material structure antifatigue shear stress, for prevention of damage by disease means to save the situation, there is great importance.
Summary of the invention
In order to solve above-mentioned prior art Problems existing, the utility model provides a kind of device for testing asphalt concrete pavement material cutting performance, this apparatus structure is simple, easy and simple to handle, bituminous concrete test specimen stressing conditions in practice can be simulated more realistically, for road surface overlay and disease means to save the situation provide reliably strong reference data.
Realizing the technical scheme that the utility model above-mentioned purpose adopts is:
A kind of device for testing asphalt concrete pavement material cutting performance, at least comprise base, gear train, cutting mechanism and clamping device, gear train comprises servo electric jar, pressure transducer and leading screw, servo electric jar is fixed on base, be connected with the output shaft of servo electric jar bottom pressure transducer, top is connected with the lower end of leading screw, cutting mechanism comprises fixed head, guide rail, slide block, loading plate and the counterweight for compressing bituminous concrete test specimen, fixed head and loading plate are all U-shaped, and the equal opening in the top of fixed head and loading plate, the bottom interior surface of loading plate is plane, be fixed on bottom fixed head on base, loading plate is positioned at fixed head, the sidewall of fixed head and loading plate is parallel to each other, guide rail and slide block all have two, on inside the two side that two guide rails are separately fixed at fixed head, two slide blocks are separately fixed at the upper position corresponding with two guide rails outside loading plate two side, each slide block and the guide rail corresponding with it match, the upper end of leading screw is fixed on the central authorities bottom loading plate through fixed head, clamping device comprises top board and lower platen, lower platen is arranged on base, top board and lower platen are fastened by bolts, and the inside surface of the upper surface of lower platen and loading plate is on same surface level.
Described cutting mechanism also comprises displacement transducer, and the bottom of displacement transducer is fixed on base, and the sensing probe of displacement transducer contacts with bottom loading plate.
The bottom of lower platen is fixed with lower platen slide block, and base is provided with the base rail matched with lower platen slide block.
Top board and lower platen all in rectangular-shaped, the bottom surface of top board and the top surface shape of lower platen and area equation.
Compared with prior art, its beneficial effect and advantage are the utility model:
This apparatus structure is simple, cheap, easy and simple to handle, the antifatigue cutting performance of bituminous concrete test specimen under different load, shearing force, shearing frequency and shearing amplitude of different proportion can be recorded easily, and measuring accuracy is high, obtain antifatigue cutting performance data accurately, reliable, thus to overlay for road surface and disease means to save the situation provides reliably strong data supporting.
Accompanying drawing explanation
The structural representation of the device for testing asphalt concrete pavement material cutting performance that Fig. 1 provides for the utility model.
Fig. 2 is the left view of Fig. 1.
Wherein, 1-base, 2-servo electric jar, 3-pressure transducer, 4-leading screw, 5-displacement transducer, 6-fixed head, 7-guide rail, 8-slide block, 9-loading plate, 10-counterweight, 11-lower platen, 12-bituminous concrete test specimen, 13-top board, 14-lower platen slide block, 15-base rail.
Embodiment
Below in conjunction with accompanying drawing, the utility model is specifically described.
As depicted in figs. 1 and 2, this device at least comprises base 1, gear train, cutting mechanism and clamping device to the structure of the device for testing asphalt concrete pavement material cutting performance that the utility model provides.Motivation structure comprises servo electric jar 2, pressure transducer 3 and leading screw 4, servo electric jar adopts Bit andits control, and stroke accuracy reaches 0.05mm, and sometimes shear rate is very slow when doing shear test for bituminous concrete test specimen, can 1mm/min be reached, this accuracy requirement can be reached with servo electric jar.Servo electric jar (DMC75-0560-1500-020-31, Shenzhen Mai Ci Industrial Co., Ltd) be fixed on base, pressure transducer (CXH-102A, Landtek automation equipment company limited of Beijing Air China) bottom and top are from threaded hole, the output shaft of servo electric jar and leading screw are from threaded, the output shaft of servo electric jar and the bottom of pressure transducer are threaded connection, and the top of leading screw and pressure transducer is threaded connection.
Cutting mechanism comprises fixed head 6, guide rail 7, slide block 8, displacement transducer 5, loading plate 9 and the counterweight 10 for compressing bituminous concrete test specimen.Fixed head 6 and loading plate 9 all U-shaped, and the equal opening in the top of fixed head 6 and loading plate 9.The bottom interior surface of loading plate 9 is plane, and the thickness bottom loading plate 9 should be greater than 3 times of shear displacemant in antifatigue shear test, thus makes the intensity of loading plate enough large.The bottom of fixed head 6 is fixed on base, and loading plate 9 is positioned at fixed head 6, and the sidewall of fixed head 6 and loading plate 9 is parallel to each other.Guide rail 7 and slide block 8 all have two, on inside two guide rails 7 are separately fixed at fixed head 6 two side by bolt, two slide blocks 8 are separately fixed at the upper position corresponding with two guide rails outside loading plate 9 two side by bolt, and each slide block 8 and the guide rail 7 corresponding with it match.The upper end of leading screw 4 is fixed on the central authorities bottom loading plate 9 through fixed head 6.The bottom of displacement transducer (SLPS, OPKON company of Turkey) 5 is fixed on base, and the sensing probe of displacement transducer 5 contacts with bottom loading plate 9.Servo electric jar obtains displacement will carry out signal decoding, easy data from overflow when test period is long, accurately can not obtain the actual displacement value of loading plate, at this time the effect of displacement transducer has just embodied, and just accurately can record the actual displacement value of loading plate according to displacement transducer.Counterweight 10 is positioned on bituminous concrete test specimen, counterweight is used for applying pressure (i.e. load) and fixing bituminous concrete test specimen to bituminous concrete test specimen, the contact area of counterweight and bituminous concrete test specimen is enough large, and length bottom the length of the counterweight contacted with bituminous concrete test specimen and loading plate is preferably suitable, the area that bituminous concrete test specimen just can be made stressed larger evenly, and the shearing force of bituminous concrete test specimen occurs between the gap of loading plate and upper lower platen when can ensure to shear, so just can make the accuracy of test result, fiduciary level is higher.
Clamping device comprises top board 13 and lower platen 11, top board 13 and lower platen 11 all in rectangular-shaped, the bottom surface of top board 13 and press down top surface shape and the area equation of 11 plates.Top board 13 and lower platen 11 are fastened by bolts, overall in rectangular-shaped when upper lower platen is fixed together.The bottom of lower platen is fixed with lower platen slide block 14, and base is provided with the base rail 15 matched with lower platen slide block 14, so just can by the distance between lower platen slide block adjustment lower platen and loading plate.During test, one end of bituminous concrete test specimen is fixedly clamped by upper and lower clamping plate, the other end is pressed in below counterweight, and the width of width bottom loading plate and bituminous concrete test specimen matches, namely the width of bituminous concrete test specimen 12 is slightly less than the width bottom loading plate, the part of bituminous concrete test specimen below counterweight so just can be made just flatly to be stuck in loading plate, and when ensureing shear test, bituminous concrete test specimen can not double swerve, can not affect the accuracy of test result.The upper surface of lower platen 11 and the inside surface of loading plate are on same surface level, and when such guarantee test is initial, bituminous concrete test specimen does not bend.
The measuring method for the device testing asphalt concrete pavement material cutting performance that the utility model provides is as follows:
1) height of loading plate is first regulated, make the inside surface of lower platen upper surface and loading plate on same surface level, then the distance between lower platen and loading plate is regulated, lower platen and loading plate is made to reach the distance of a setting, be fixed between lower platen and top board by one end of bituminous concrete test specimen again, the other end is placed on loading plate bottom interior surface.
2) on bituminous concrete test specimen, counterweight is placed, for fixing bituminous concrete test specimen with to bituminous concrete test specimen load application, the weight of counterweight is the load (pressure) of applying, rotating speed and the stroke of servo electric jar are set, open servo electric jar, servo electric jar drives pressure transducer, leading screw, loading plate to pump, bituminous concrete test specimen is pumped thereupon, thus makes bituminous concrete test specimen that shearing behavior occur under the effect of a constant load.This device applies different loads by the counterweight placing Different Weight to bituminous concrete test specimen, the shearing frequency of bituminous concrete test specimen and the change of amplitude is realized by the rotating speed and stroke that control servo electric jar, the shearing force suffered by bituminous concrete is measured by pressure transducer, thus record the antifatigue cutting performance of bituminous concrete test specimen under different operating mode of different ratio, namely under different loads, shearing force, shearing frequency and shearing amplitude, the shearing number of times that the bituminous concrete test specimen measuring different ratio is sheared when destroying.
Claims (4)
1. one kind for testing the device of asphalt concrete pavement material cutting performance, it is characterized in that: at least comprise base, gear train, cutting mechanism and clamping device, gear train comprises servo electric jar, pressure transducer and leading screw, servo electric jar is fixed on base, be connected with the output shaft of servo electric jar bottom pressure transducer, top is connected with the lower end of leading screw, cutting mechanism comprises fixed head, guide rail, slide block, loading plate and the counterweight for compressing bituminous concrete test specimen, fixed head and loading plate are all U-shaped, and the equal opening in the top of fixed head and loading plate, the bottom interior surface of loading plate is plane, be fixed on bottom fixed head on base, loading plate is positioned at fixed head, the sidewall of fixed head and loading plate is parallel to each other, guide rail and slide block all have two, on inside the two side that two guide rails are separately fixed at fixed head, two slide blocks are separately fixed at the upper position corresponding with two guide rails outside loading plate two side, each slide block and the guide rail corresponding with it match, the upper end of leading screw is fixed on the central authorities bottom loading plate through fixed head, clamping device comprises top board and lower platen, lower platen is arranged on base, top board and lower platen are fastened by bolts, and the inside surface of the upper surface of lower platen and loading plate is on same surface level.
2. the device for testing asphalt concrete pavement material cutting performance according to claim 1, it is characterized in that: described cutting mechanism also comprises displacement transducer, the bottom of displacement transducer is fixed on base, and the sensing probe of displacement transducer contacts with bottom loading plate.
3. the device for testing asphalt concrete pavement material cutting performance according to claim 1, is characterized in that: the bottom of lower platen is fixed with lower platen slide block, and base is provided with the base rail matched with lower platen slide block.
4. the device for testing asphalt concrete pavement material cutting performance according to claim 1, is characterized in that: top board and lower platen all in rectangular-shaped, the bottom surface of top board and the top surface shape of lower platen and area equation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520563339.2U CN204944960U (en) | 2015-07-30 | 2015-07-30 | A kind of device for testing asphalt concrete pavement material cutting performance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520563339.2U CN204944960U (en) | 2015-07-30 | 2015-07-30 | A kind of device for testing asphalt concrete pavement material cutting performance |
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| Publication Number | Publication Date |
|---|---|
| CN204944960U true CN204944960U (en) | 2016-01-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520563339.2U Withdrawn - After Issue CN204944960U (en) | 2015-07-30 | 2015-07-30 | A kind of device for testing asphalt concrete pavement material cutting performance |
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| CN (1) | CN204944960U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105067458A (en) * | 2015-07-30 | 2015-11-18 | 山西省交通科学研究院 | Device for testing shearing property of asphalt concrete pavement material |
| CN108638336A (en) * | 2018-06-27 | 2018-10-12 | 中建西部建设西南有限公司 | A kind of full-automatic pressure test block system of concrete mixing plant |
| CN109374434A (en) * | 2018-09-05 | 2019-02-22 | 华北水利水电大学 | Asphalt concrete pavement material shearing performance test device |
| CN109813595A (en) * | 2018-12-28 | 2019-05-28 | 武汉华星光电半导体显示技术有限公司 | A kind of bending clamp |
-
2015
- 2015-07-30 CN CN201520563339.2U patent/CN204944960U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105067458A (en) * | 2015-07-30 | 2015-11-18 | 山西省交通科学研究院 | Device for testing shearing property of asphalt concrete pavement material |
| CN105067458B (en) * | 2015-07-30 | 2017-12-01 | 山西省交通科学研究院 | A kind of device for being used to test asphalt concrete pavement material cutting performance |
| CN108638336A (en) * | 2018-06-27 | 2018-10-12 | 中建西部建设西南有限公司 | A kind of full-automatic pressure test block system of concrete mixing plant |
| CN109374434A (en) * | 2018-09-05 | 2019-02-22 | 华北水利水电大学 | Asphalt concrete pavement material shearing performance test device |
| CN109813595A (en) * | 2018-12-28 | 2019-05-28 | 武汉华星光电半导体显示技术有限公司 | A kind of bending clamp |
| CN109813595B (en) * | 2018-12-28 | 2021-04-27 | 武汉华星光电半导体显示技术有限公司 | Bending clamp |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160106 Effective date of abandoning: 20171201 |
|
| AV01 | Patent right actively abandoned |