CN201311389Y - Coarse aggregate and mineral aggregate clearance rate test measuring device - Google Patents
Coarse aggregate and mineral aggregate clearance rate test measuring device Download PDFInfo
- Publication number
- CN201311389Y CN201311389Y CN 200820124673 CN200820124673U CN201311389Y CN 201311389 Y CN201311389 Y CN 201311389Y CN 200820124673 CN200820124673 CN 200820124673 CN 200820124673 U CN200820124673 U CN 200820124673U CN 201311389 Y CN201311389 Y CN 201311389Y
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- hammer
- coarse aggregate
- base
- drop hammer
- drop
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- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The utility model relates to a coarse aggregate and mineral aggregate clearance rate test measuring device which comprises a stand part, a base part and a controller, wherein in the stand part, a magnet, a motor, a speed reducer, a hammer lifting chain, a guide rail and a drop hammer guiding rod are arranged on the stand; a sliding block is in sleeve joint with the guide rail, one side of the sliding block is connected with the hammer lifting chain, the other side of the sliding block is fixed with a dowel rod, a hammer lifting tongue plate is fixed above the sliding block and controls a drop hammer to move to a setting height on the drop hammer driving rod, the drop hammer can freely drop, and the lower end of the drop hammer is provided with a demountable hammer head; in the base part, the stand is fixed on the base, a protractor is fixed in the base, a replay rod arranged on the protractor extends out of the upper surface of the base and corresponds to the position of the dowel rod, a rotating disk controlled by the protractor is arranged on the base, a fixing base and a testing barrel are arranged on the rotating disk, the drop hammer guiding rod and the drop hammer are controlled by the magnet and can swing around a vertical shaft of the guide rail until to the corresponding center of the testing barrel, and the controller is used for controlling a counter, the starting, the stopping, the motor switch and the swinging of the drop hammer.
Description
Technical field
The utility model relates to a kind of testing equipment that is applied to the scientific research of road engineering field, design and construction, relates in particular to a kind of test equipment that is used for coarse aggregate rubble void in mineral aggregate (VCA).
Background technology
The void in mineral aggregate of coarse aggregate is an important indicator estimating asphalt skeleton tightness degree, and along with the widespread use of skeleton-compact type asphalt mixture, the mensuration and the research on standard of coarse aggregate void also more and more come into one's own in recent years.As the index of estimating the skeleton tightness degree, its test determination comprises two major issues: (1) is not having under the fine aggregate interference effect, coarse aggregate stacking states under any state all is to have formed skeleton, but different skeleton arrangement mode, its tightness degree but difference is huge, therefore adopts the tightness degree of coarse aggregate in the void in mineral aggregate evaluation asphalt under which kind of stacking states more suitable; (2) how the bulk density of coarse aggregate is measured.We at first pay close attention to first problem, can adopt bulk density under what state to estimate the tightness degree of coarse aggregate in the asphalt be more objective and accurate actually? in the prior art, tamping for coarse aggregate, China's " highway engineering gather materials testing regulations " regulation adopts the method for hand punning and shaking table vibration, the subject matter of these methods is: the test specimen surface of (1) tamping need manually be filled and led up, therefore the influence of result's human factor is big, causes result's reappearance and repdocutbility not high; (2) tamping merit can't quantize; (3) state difference that coarse aggregate clearance rate forms in resulting VCA value and the asphalt under the existing method is big, adopt the real merit of hitting of dry-tamping solid yardage method effect to be significantly less than the real merit of hitting of asphalt moulding, formed coarse aggregate skeleton voidage is bigger than normal, evaluation criterion as asphalt skeleton compact state is too loose, has lost control Significance.Research is also arranged in addition for fear of the problems referred to above, taked direct application marshall compaction equipment to carry out the reality of hitting of coarse aggregate, though this method can satisfy the requirement of hitting real merit, but result of experiment show gather materials to smash rate excessive, the actual coarse aggregate compound that forms is the off-design grating, and the coarse aggregate void of mensuration is not representative.The problem that exists in view of existing method can't satisfy current asphalt mixture material designing requirement, is necessary to develop novel coarse aggregate void proving installation, and present method of testing is carried out necessary improvement.
Summary of the invention
The purpose of this utility model is the deficiency at existing test method, but provides a kind of mechanized operation, hit that real merit is adjustable, the low coarse aggregate void test equipment of the rate that smashes of gathering materials.
Coarse aggregate void test equipment of the present utility model comprises rack section, base portion and controller; In the described rack section, the top of frame is provided with magnet, inside is provided with motor and speed reducer, the front of frame is provided with carries hammer chain, the guide rail and the guide pole that drops hammer, carrying the hammer chain is driven by reductor, slide block set is connected on the guide rail and can moves up and down and connect on one side along guide rail carries hammer chain another side fixing force transfer bar, carrying the hammer hyoplastron is fixed on slide block top and control and drops hammer and move upward to the height of setting along the guide pole that drops hammer, drop hammer and fall in the freely falling body mode, the lower end of dropping hammer is provided with detachable tup; In the described base portion, fixed frame on the base, base internal fixation indexing attachment, the relay bar on the indexing attachment stretches out above base and is corresponding with the transmission rod position, rolling disc by indexing attachment control is installed on the base, and rolling disc is provided with firm banking and test bucket; The guide pole that drops hammer can be rocked to a test bucket center around the Z-axis of guide rail with dropping hammer under the control of magnet; Described controller is used for control counter, starts and stops, motor switch, dropping hammer to the swing at test bucket center.
In the above-mentioned testing apparatus, the described hammer hyoplastron of carrying is provided with the front and back Collapsible structure.
In the above-mentioned testing apparatus, described indexing attachment is set to 60 ° of calibration, and controller control is dropped hammer and once swung in fact every hitting for 6 times, and the swing back is hit real 1 time to the center again.
In the above-mentioned testing apparatus, be provided with demountable structure between described test bucket and the firm banking.
The principle of work of testing apparatus of the present utility model is: motor drives through reductor and carries the hammer chain, and carry the hammer hyoplastron by the slide block drive, lifting is dropped hammer and tup (calling compaction hammer in the following text) arrives the height of setting, propose the withdrawal of hammer hyoplastron, the compaction hammer free fall type falls, compaction hammer whenever hits real 1 time, and transmission rod drives indexing attachment 1 time by the relay bar, and indexing attachment drives test bucket rotation 60 degree through rolling disc.Compaction hammer hits real 6 times along barrel rim along the even cloth hammer of test bucket, hits real 1 time in the middle of compaction hammer swings to again, and totally 7 hammers are finished one and taken turns and hit reality, make whole section stressed evenly.For of the testing requirements of the maximum grain of different nominals, all be equipped with corresponding test bucket, drop hammer and tup through gathering materials.
The utility model is applicable to various the gathering materials that highway engineering is used, and comprises the multiple type of gathering materials of different-grain diameter, different material sources.
The utility model hits real merit and hits real coarse aggregate compound with adjustable, is improved to polyurethane or the contour toughness material of nylon by the material with tup, and the control counterweight of dropping hammer can effectively reduce the fragmentation of gathering materials, and guarantees the stable of grating fully.Simultaneously by putting the polyurethane pad at surface of aggregate layer pad, can strengthen the planarization of the mix surface of gathering materials, reduce because surface artificial is filled the error of bringing, that has avoided the current specifications employing mends the artificial experimental error that flat method causes with fixed volume, surface artificial.
With respect to prior art, testing apparatus of the present utility model has following advantage and effect:
(1) this equipment can be adjusted the height of compaction hammer, and control in the mode of numerical control and to hit real number of times, and control charging test bucket by dividing apparatus and rotate with fixed angle with hitting real number of times, can guarantee that therefore compacting is even and can the control of standardization ground hit real energy.
(2) this equipment has been avoided artificial factor effectively owing to adopt the mode of mechanical impact to realize the tamping of coarse aggregate, makes result of experiment have more objectivity, and the repeatability and the repdocutbility of test all are significantly increased.
(3) this equipment improvement the counterweight and the tup material of dropping hammer, avoided effectively the geo-compaction instrument hammer heavy excessive, easily cause the shortcoming of aggregate crusher, be equipped with the tup and the test bucket of corresponding size simultaneously for the different nominal maximum particle diameters of gathering materials.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is a test bucket and the structural representation of firm banking;
Fig. 3 is the vertical view of test bucket among Fig. 2.
Embodiment
Further specify the utility model below in conjunction with preferred embodiment, following embodiment only is used to the utility model is described but not to restriction of the present utility model.
With reference to Fig. 1, coarse aggregate void test equipment of the present utility model comprises rack section, base portion and controller (not drawing among the latter figure), and controller links to each other with equipment through data line; In the rack section, frame 1 is provided with magnet 2, the inside of frame 1 or next door are provided with motor and speed reducer 5, the front of frame 1 is provided with carries hammer chain 4, the guide rail 3 and the guide pole 8 that drops hammer, carrying hammer chain 4 is driven by reductor, slide block 15 is socketed on the guide rail 3 and can moves up and down along guide rail 3, and hammer chain 4 another side fixing force transfer bars 17 are carried in slide block 15 connection on one side, carrying that hammer hyoplastron 9 is fixed on the slide block 15 and control is dropped hammer 10 moves upward to setting height along the guide pole 8 that drops hammer, drop hammer 10 by the freely falling body whereabouts, 10 lower ends that drop hammer are provided with detachable tup 11; In the base portion, fixed frame 1 on the base 7, base 7 internal fixation indexing attachments 16, relay bar 6 on the indexing attachment 16 stretches out above base 7 and is corresponding with transmission rod 17 positions, rolling disc 14 by indexing attachment 16 controls is installed on the base 7, and rolling disc 14 is provided with fixed underpan 13 and test bucket 12; Guide pole 8 and drop hammer and 10 can be rocked to test bucket 12 centers around the Z-axis of guide rail 3 under the control of magnet 2 drops hammer; Controller is used for control counter, starts and stops, motor switch, 10 swings to test bucket 12 centers of dropping hammer.
In the described testing apparatus, carry hammer hyoplastron 9 and be provided with the front and back Collapsible structure, as spring structure.Carry 10 whereabouts of dropping hammer when hammer hyoplastron 9 is withdrawn; Carry hammer hyoplastron 9 when stretching out, can upwards mention and drop hammer 10.
In the described testing apparatus, indexing attachment 16 is set to 60 ° of calibration, and controller control is dropped hammer and 10 once swung in fact every hitting for 6 times, hits after the swing real 1 time again.Indexing attachment 16 adopts existing product, is cooperated by positive and negative two sleeve gears and rotates, and carries out the forced action type calibration, and is assisted by damping block, and it is accurate to make it calibration.
In the described testing apparatus, 10 the hammer of dropping hammer is heavy can be by counterweight adjustment in material and the hammer.10 epimeres that drop hammer are provided with one section screw thread or slot, insert so that carry hammer hyoplastron 9.
In the described testing apparatus, tup 11 is selected high tenacity materials such as polyurethane or nylon for use, with the fragmentation of avoiding gathering materials.
In the described testing apparatus, motor is 380V, 0.37kw motor.
With reference to Fig. 2 and Fig. 3, in the described testing apparatus, be provided with demountable structure between test bucket 12 and the fixed underpan 13, to realize for convenience detach and fixing of test bucket.Described demountable structure is: firm banking (13) is provided with column (18), the column epimere is provided with screw thread, the fixedly ear (19) at test bucket (12) two ends is provided with the opposite recess of both direction, snaps on the column (18) with recess, and it is fixing with column (18) to test bucket (12) with nut.
For of the testing requirements of the maximum grain of different nominals, all be equipped with corresponding test bucket, drop hammer and tup through gathering materials.
Utilize the utility model testing apparatus to carry out coarse aggregate rubble void in mineral aggregate (VCA) experimental test, can keep the comparatively stable real merit of hitting, lower aggregate crusher rate is for the coarse aggregate void of further accurately measuring is given security.
Claims (8)
1, a kind of coarse aggregate void test equipment is characterized in that, it comprises rack section, base portion and controller; In the described rack section, the top of frame (1) is provided with magnet (2), inside or next door are provided with motor and speed reducer (5), the front of frame (1) is provided with carries hammer chain (4), guide rail (3) and the guide pole that drops hammer (8), carrying hammer chain (4) is driven by reductor, slide block (15) is socketed in guide rail (3) and goes up also and can move up and down along guide rail (3), and hammer chain (4) another side fixing force transfer bar (17) is carried in connection on one side, carry hammer hyoplastron (9) be fixed on slide block (15) top and control drop hammer (10) move upward to setting height along the guide pole (8) that drops hammer, drop hammer (10) fall in the freely falling body mode, (10) lower end of dropping hammer is provided with detachable tup (11); In the described base portion, base (7) is gone up fixed frame (1), base (7) internal fixation indexing attachment (16), relay bar (6) on the indexing attachment (16) stretches out above base (7) and is corresponding with transmission rod (17) position, base (7) is gone up the rolling disc of installing by indexing attachment (16) control (14), and rolling disc (14) is provided with firm banking (13) and test bucket (12); Drop hammer guide pole (8) and drop hammer (10) can be rocked to corresponding test bucket (a 12) center around the Z-axis of guide rail (3) under the control of magnet (2); Described controller is used for control counter, starts and stops, motor switch, (10) swing to test bucket (12) center of dropping hammer.
2, coarse aggregate void test equipment according to claim 1 is characterized in that, the described hammer hyoplastron (9) of carrying is provided with the front and back Collapsible structure.
3, coarse aggregate void test equipment according to claim 2 is characterized in that, described indexing attachment (16) is set to 60 ° of calibration, controller control drop hammer (10) once swing in fact every hitting for 6 times, hit again after the swing real 1 time.
4, coarse aggregate void test equipment according to claim 3 is characterized in that, the hammer of described dropping hammer (10) is heavy can be by counterweight adjustment in the hammer.
5, coarse aggregate void test equipment according to claim 3 is characterized in that, described tup (11) can be selected polyurethane or nylon material for use.
6, coarse aggregate void test equipment according to claim 3 is characterized in that, described motor is 380V, 0.37kw motor.
7, according to claim 3,4,5 or 6 described coarse aggregate void test equipments, it is characterized in that, be provided with demountable structure between described test bucket (12) and the firm banking (13).
8, coarse aggregate void test equipment according to claim 7, it is characterized in that, described demountable structure is: firm banking (13) is provided with column (18), the column epimere is provided with screw thread, the fixedly ear (19) at test bucket (12) two ends is provided with the opposite recess of both direction, snap on the column (18) with recess, it is fixing with column (18) to test bucket (12) with nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200820124673 CN201311389Y (en) | 2008-12-17 | 2008-12-17 | Coarse aggregate and mineral aggregate clearance rate test measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200820124673 CN201311389Y (en) | 2008-12-17 | 2008-12-17 | Coarse aggregate and mineral aggregate clearance rate test measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201311389Y true CN201311389Y (en) | 2009-09-16 |
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ID=41108647
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200820124673 Expired - Lifetime CN201311389Y (en) | 2008-12-17 | 2008-12-17 | Coarse aggregate and mineral aggregate clearance rate test measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201311389Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101750271B (en) * | 2008-12-17 | 2011-06-29 | 交通部公路科学研究院 | Coarse aggregate void test equipment |
| CN104034610A (en) * | 2014-05-07 | 2014-09-10 | 西南交通大学 | Drop-hammer stamping impacting tester |
| CN107167351A (en) * | 2017-05-19 | 2017-09-15 | 山东科技大学 | A kind of size automatic firmness-impacting apparatus and its application process |
| CN108802351A (en) * | 2018-09-04 | 2018-11-13 | 山东交通学院 | A kind of lock block type list twin shaft conversion equipment for road-surface accelerating and loading test equipment |
-
2008
- 2008-12-17 CN CN 200820124673 patent/CN201311389Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101750271B (en) * | 2008-12-17 | 2011-06-29 | 交通部公路科学研究院 | Coarse aggregate void test equipment |
| CN104034610A (en) * | 2014-05-07 | 2014-09-10 | 西南交通大学 | Drop-hammer stamping impacting tester |
| CN107167351A (en) * | 2017-05-19 | 2017-09-15 | 山东科技大学 | A kind of size automatic firmness-impacting apparatus and its application process |
| CN107167351B (en) * | 2017-05-19 | 2019-09-03 | 山东科技大学 | A kind of size automatic firmness-impacting apparatus and its application method |
| CN108802351A (en) * | 2018-09-04 | 2018-11-13 | 山东交通学院 | A kind of lock block type list twin shaft conversion equipment for road-surface accelerating and loading test equipment |
| CN108802351B (en) * | 2018-09-04 | 2023-12-01 | 山东交通学院 | Lock block type single-double-shaft conversion device for pavement acceleration loading test equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20090916 Effective date of abandoning: 20081217 |