CN103439221B - The bitumen needle forcemeter that standard pin height of drop is controlled - Google Patents
The bitumen needle forcemeter that standard pin height of drop is controlled Download PDFInfo
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- CN103439221B CN103439221B CN201310300783.0A CN201310300783A CN103439221B CN 103439221 B CN103439221 B CN 103439221B CN 201310300783 A CN201310300783 A CN 201310300783A CN 103439221 B CN103439221 B CN 103439221B
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Abstract
The invention discloses the bitumen needle forcemeter that a kind of standard pin falling head is controlled, comprise control desk, control desk is installed perpendicular support, perpendicular support installs digital display meter, lateral frame; Lateral frame is installed electromagnet and pin connecting rod passes, pin connecting rod lower end installation code pin; Pin connecting rod is provided with thick head connecting rod, thick head connecting rod comprises the body of rod, and the chuck folder of body of rod upper end in a groove; Body of rod lower end is provided with the thick head of level, and the end of thick head is provided with vertical cylinder; The distance of the needle point of standard pin and the cylinder lower surface of thick head and groove up and down along apart from equal; Control panel installed by control desk; The time relay, digital display meter, heater strip, temperature sensor, time digital display window, relay indicating light, temperature digital-display window, release-push, enter pin button, heater strip switch is connected with controller with reset button.This penetrometer inserts bituminous sheaths when avoiding interference and the needle point decline of water and causes result bigger than normal, and causes error when tip wear is serious.
Description
Technical field
The present invention relates to the controlled bitumen needle forcemeter of a kind of standard pin height of drop and penetration test method, the method is suitable at laboratory equipment simple and crude, adopts without under the condition of special penetration test lighting installation or under requiring the point-device prerequisite of pen..
Background technology
The determination techniques of Asphalt Penetration has formed certain method for normalizing, and profit can realize the Accurate Determining of Asphalt Penetration in this way substantially.But the factor of analyzing influence Asphalt Penetration test accuracy, one of key link is exactly the contact of test Plays pin and bituminous sheaths, and this is also a difficult point.To this, require that standard pin just contacts with bituminous sheaths in existing asphalt test code, namely not only seamless but also there is not the situation that needle point enters asphalt membrane between standard pin and asphalt film, but because pitch color is pitchy or black during practical operation, standard pin needle point is very elongated, add to operate in water and carry out, it is unscientific for only observing contact situation by naked eyes through water, reason estimates when whether needle point contacts with bituminous sheaths often to cause observational error, thus occur that test point is too early or cross slow insertion in pitch, cause test result bigger than normal or less than normal the most at last.At present, the equipment measuring Asphalt Penetration is divided into manual dial type penetrometer and the large class of automatic digital display formula bitumen needle forcemeter two substantially, the common ground of this two quasi-instrument is the contact situation all adopting manual adjustments bituminous sheaths and standard pin, particularly manual penetrometer, owing to not adopting the equipment such as low-voltage lighting and magnifier as automatic penetrometer, in water, the contact situation of bituminous sheaths and standard pin only accurately cannot be adjusted with the observation of naked eyes, test is made to there is very big error, and when standard pin frayed more serious time as do not changed in time, experimental result will be made less than normal, the accuracy of impact experiment.For addressing this problem, testing crew once proposed a lot of method, and as blank sheet of paper method, change material order of addition etc., though accuracy increases but still there is comparatively big error, the accuracy of measurement result is not ideal enough.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art, the object of the invention is to, the bitumen needle forcemeter that a kind of standard pin falling head is controlled is provided, this penetrometer adds thick head connecting rod and flexible arrow, screw thread is increased in pin connecting rod, this design is not easily inserted in pitch compared with standard pin based on thick head connecting rod lower end, thick head connecting rod is used to replace standard needle point first to contact bituminous sheaths, vision is replaced by sense of touch, effectively prevent and may to insert bituminous sheaths when the interference of water and needle point decline and be pre-formed the situation that hole causes test findings bigger than normal, and avoid when tip wear serious in time standard of replacement pin cause the situation of experimental error.Screw thread rotation is adopted to decline less relative to Manual descending error.
In order to achieve the above object, present invention employs following technical scheme to be solved:
The bitumen needle forcemeter that standard pin falling head is controlled, comprises control desk, control desk is provided with perpendicular support, and perpendicular pedestal upper end is provided with digital display meter, and measuring staff passes vertically through digital display meter and can move up and down in digital display meter, the displacement of digital display meter display measuring staff; Described perpendicular support is provided with lateral frame, and lateral frame is positioned at below measuring staff;
Described lateral frame is provided with electromagnet in one end of perpendicular support, and the other end is passed vertically through by pin connecting rod, and pin connecting rod lower end is provided with standard pin; The first cavity and the second cavity that are connected is provided with successively, the first cavity and the second cavity is column and the former is larger than the latter xsect in lateral frame between pin connecting rod to electromagnet; The only tight screw that xsect is greater than the second cavity is installed in the first cavity; Only tight screw end thereof contacts pin connecting rod side, the other end and slide bar are connected, and a slide bar part is positioned at the first cavity, and another part is positioned at the second cavity; In the part being positioned at the first cavity of slide bar, cover has spring, and the xsect of spring is greater than the second cavity and is less than only tight screw; Pin connecting rod is fixed in lateral frame to the thrust of stopping tight screw by spring; The top that slide bar is positioned at the part of the second cavity is provided with irony head, and irony head is just to the electromagnet magnetic head on electromagnet;
One end that described lateral frame is provided with pin connecting rod is provided with the cantilever of level, is provided with arrow, the end direction needle connecting rod of arrow below cantilever; Arrow in the vertical direction is scalable;
Pin connecting rod is provided with thick head connecting rod, described thick head connecting rod comprises the body of rod, and the chuck that body of rod upper end is arranged is clipped in the annular recess on pin connecting rod outer wall; Body of rod lower end is provided with the thick head of level, and the end of thick head is provided with vertical cylinder, and the standard pin in pin connecting rod is positioned at above this cylinder and the extended line of standard pin passes vertically through cylinder; The distance of the needle point of standard pin and the cylinder lower surface of thick head and groove up and down along apart from equal;
Control desk is provided with temperature control tank, temperature control tank is provided with heater strip, is provided with temperature sensor in Water Tank with Temp.-controlled; Bitumen samples is placed in temperature control tank;
Control desk is provided with control panel, control panel is provided with time digital display window, relay indicating light, temperature digital-display window, release-push, enters pin button, heater strip switch and reset button, in control desk, be provided with the time relay and controller; The described time relay, digital display meter, heater strip, temperature sensor, time digital display window, relay indicating light, temperature digital-display window, release-push, enter pin button, heater strip switch is connected with controller respectively with reset button.
The present invention also comprises following other technologies feature:
The built-in induction chip isometric with it of described measuring staff, this induction chip is demarcated from the bottom to top, is equipped with the probe that can read the numerical value demarcated in induction chip in digital display meter.
Described pin connecting rod is provided with external thread, and the inwall of the lateral frame of pin connecting rod contact is provided with internal thread.
The lower end fixed knob of described pin connecting rod, standard pin is vertically fixed on knob lower end; Knob and pin connecting rod and standard pin are integrated; Lower to concordant along with groove on described knob.
Described control desk bottom surface is provided with multiple adjusting knob.
Described chuck adopts spring clamp.
The distance of edge up and down of described groove is 10mm, and the distance of the needle point of standard pin and the cylinder lower surface of thick head is 10mm.
Described chuck height is 10mm.
Compared with prior art, advantage of the present invention is as follows:
1, penetrometer of the present invention avoids the contact position deviation of observing design asphalt pin and bituminous sheaths in water and the error caused, adopt the position adjusting arrow and pin connecting rod more than the water surface, standard pin is contacted just with bituminous sheaths, thus test accuracy is fundamentally improved.
2, thick head connecting rod lower end can not be inserted in pitch, can determine that it contacts just by sensation, stopped with the naked eye range estimation adjustment standard pin time the needle point scope that fluctuates larger, easily make needle point insert in advance in pitch to form said minuscule hole or needle point is unsettled does not touch asphalt surface, thus the phenomenon making experimental result artificially bigger than normal or less than normal occurs;
3, owing to making the reason such as material, misoperation, design asphalt pin easily occurs bending when using, needle point passivation, clean clean and be stained with the changes such as pitch, standard pin is impelled very easily to wear and tear, when still using when not changing in time, needle point is contacted just with bituminous sheaths, test findings can be made less than normal.In the present invention when standard pin weares and teares, still can normal running, make needle point and bitumen samples surface have minimum gap, thus it is less than normal to make up the numerical value caused due to tip wear to a certain extent.
4, owing to requiring that pin connecting rod accurately declines one section of height, and edge on the groove that can not exceed pin connecting rod, therefore by screw thread rotation instead of Manual descending, ensure that the accuracy of test findings.
Below in conjunction with drawings and Examples, further explanation is explained to the present invention.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the connection diagram of pin connecting rod and lateral frame.
Fig. 3 is the upper and lower relation schematic diagram of thick head connecting rod and pin connecting rod.
Fig. 4 is control panel schematic diagram.
Each label implication in figure: 1, measuring staff; 2, digital display meter 3, pin connecting rod; 4, irony head; 5, cantilever; 6, arrow; 7, knob; 8, standard pin; 9, thick head; 10, asphalt test piece; 11, temperature control tank; 12: heater strip; 13, control desk; 14, adjusting knob; 15, perpendicular support; 16, chuck; 17, connecting rod; 18, temperature sensor; 19, button is regulated; 20, groove; 21, electromagnet; 21-1, electromagnet magnetic head; 22-1, the first cavity; 22-2, the second cavity; 23, lateral frame; 24, spring; 25, slide bar; 26, tight screw is stopped; 27, time digital display window; 28, relay indicating light; 29, temperature digital-display window; 30, release-push; 31, pin button is entered; 32, heater strip switch; 33, reset button.
Embodiment
As shown in Figure 1 to 4, the penetrometer of controlled design asphalt pin falling head of the present invention, comprises control desk 13, control desk 13 bottom surface is provided with multiple adjusting knob 14 with regulable control platform 13 level; Control desk 13 is provided with control panel and perpendicular support 15, perpendicular support 15 upper end is provided with digital display meter 2, measuring staff 1 passes vertically through digital display meter 2, the built-in induction chip isometric with it of this measuring staff 1, induction chip is demarcated from the bottom to top, is equipped with the probe that can read the numerical value demarcated in induction chip in digital display meter 2; Perpendicular support 15 is provided with lateral frame 23, and lateral frame 23 is positioned at below measuring staff 1;
As shown in Figure 2, described lateral frame 23 is provided with electromagnet 21 in one end of perpendicular support 15, and the other end is passed vertically through by pin connecting rod 3, and pin connecting rod 3 lower end is provided with standard pin 8; Pin connecting rod 3 is provided with external thread, and the inwall of the lateral frame 23 that pin connecting rod 3 contacts is provided with internal thread; The the first cavity 22-1 and the second cavity 22-2 that are connected is provided with successively, the first cavity 22-1 and the second cavity 22-2 is column and the former is larger than the latter xsect in lateral frame 23 between pin connecting rod 3 to electromagnet 21; The only tight screw 26 that xsect is greater than the second cavity 22-2 is installed in the first cavity 22-1, makes only tight screw 26 only movable in the first cavity 22-1 and the second cavity 22-2 can not be entered; Only tight screw 26 end thereof contacts pin connecting rod 3 side, the other end and slide bar 25 are connected, and slide bar 25 part is positioned at the first cavity 28-1, and another part is positioned at the second cavity 22-2; In the part being positioned at the first cavity 22-1 of slide bar 25, cover has spring 24, and the xsect of spring 24 is greater than the second cavity 22-2 and is less than only tight screw 26, makes spring 24 be compressed in only between tight screw 26 and the first cavity 22-1 sidewall; Pin connecting rod 3 is fixed in lateral frame 23 to the thrust of stopping tight screw 26 by spring 24; The top that slide bar 25 is positioned at the part of the second cavity 22-2 is provided with irony 4, and irony 4 is just to the electromagnet magnetic head 21-1 on electromagnet 21; One end that lateral frame 23 is provided with pin connecting rod 3 is provided with the cantilever 5 of level, is provided with arrow 6, the end direction needle connecting rod 3 of arrow 6 below cantilever 5; Arrow 6 in the vertical direction is scalable;
The lower end fixed knob 7 of pin connecting rod 3, standard pin 8 is vertically fixed on knob 7 lower end; Knob 7 is integrated with pin connecting rod 3 and standard pin 8, drives pin connecting rod 3 and standard pin 8 to rotate together when it rotates, thus relative to the trickle movement of lateral frame about 23.
Pin connecting rod 3 is provided with thick head connecting rod, as shown in Figure 3, described thick head connecting rod comprises the body of rod 17, the chuck 16 that the body of rod 17 upper end is arranged is clipped in the annular recess 20 on pin connecting rod 3 outer wall, the lower edge of groove 20 with on knob 7 along concordant, chuck 16 is highly 10mm, and the distance of edge up and down of groove 20 is 10mm; The body of rod 17 lower end is provided with thick 9 of level, and the end of thick 9 is provided with vertical cylinder, and the standard pin 8 in pin connecting rod 3 is positioned at above this cylinder and the extended line of standard pin 8 passes vertically through cylinder; The distance of the needle point of standard pin 8 and the cylinder lower surface of thick 9 is 10mm.
On control desk, 12 are provided with temperature control tank 11, temperature control tank 11 are provided with heater strip 12, are provided with temperature sensor 18 in Water Tank with Temp.-controlled 13; Bitumen samples 10 is placed in temperature control tank 11;
Control panel is provided with time digital display window 27, relay indicating light 28, temperature digital-display window 29, release-push 30, enters pin button 31, heater strip switch 32 and reset button 33, in control desk 13, be provided with the time relay and controller; The described time relay, digital display meter 2, heater strip 12, temperature sensor 18, regulate button 19, time digital display window 27, relay indicating light 28, temperature digital-display window 29, release-push 30, enter pin button 31, heater strip switch 32 is connected with controller respectively with reset button 33; It is 1-99.9s that the time relay arranges scope;
Regulate button 19 to comprise two buttons, be respectively used to tune up the stipulated time entering pin or turn down.Reset button is used for stipulated time zero design asphalt pin being entered pin.
Thick head connecting rod adopts aluminum alloy material; Chuck 16 adopts spring clamp, also can adopt other hold assemblies;
Asphalt Penetration assay method of the present invention, specifically comprises the steps:
1, preliminary work
Rotation of adjustment knob 14 makes control desk 13 level, in temperature control tank 11, add water, and asphalt test piece 10 is put into temperature control tank 13; Installation code pin 8, chuck 16 is clipped in groove 20 place of pin connecting rod 3, the time relay is set to the stipulated time (5s); Open heater strip switch 32.
2, test procedure
1) position of mobile bitumen samples 10 after water temperature reaches regulation test temperature in temperature control tank 13, makes it to be positioned at below standard pin 8 needle point;
2) hand-held pin connecting rod 3, press release-push 30, controller controls electromagnet 21 and is energized after receiving this signal, and electromagnet magnetic head 21-1 on electromagnet 21 adsorbs irony on slide bar 25 4, slide bar 25 drives only tight screw 26 to be compressed further by spring 24, and pin connecting rod 3 is stopped tight screw 26 and unclamps; Hand-held pin connecting rod 3 makes it slowly to decline, until when thick 9 bottom surfaces contact with bitumen samples 10, again press release-push 30, controller controls electromagnet 21 power-off after receiving this signal, and only tight screw 26 thrust given again by spring 24, thus pin pin connecting rod 3; Now the distance of standard pin 8 needle point and bitumen samples surface (i.e. the cylinder bottom surface of thick 9) is 10mm;
3) adjust arrow 6 to make it to point to groove 20 times edges, unclamp chuck 16, take off thick head connecting rod;
4) rotate knob 7 pin connecting rod 3 is slowly declined, on the groove of arrow 6 direction needle connecting rod 3 along time stop the rotation, now the needle point of standard pin 8 accurately have dropped 10mm, and the needle point of standard pin 8 contacts with asphalt test piece 10 just;
5) press digital display meter 2 measuring staff 1, make it and pin connecting rod 3 tip contact, resetting digital display meter 2 reading is 0;
6) press on control panel and enter pin button 31, after this signal received by controller, opening time relay also controls electromagnet 21 and is energized, and pin connecting rod 3 is unclamped by only tight screw 26; Pin connecting rod 3 and standard pin 8 freely fall into bitumen samples 10, and after the time relay controls to the stipulated time, controller controls electromagnet power-off, automatic locking pin connecting rod 3.
7) move lower measuring staff 1 to make it to contact with pin connecting rod about 3, now digital display meter 2 shows the penetration number that numerical value is bitumen samples 10.
8) same asphalt test piece 4 replication at least three times, between each measuring point and the distance at measuring point and bitumen samples edge be no less than 10mm, each measure before bitumen samples 10 should be put into thermostatted water.Each mensuration is changed a clean standard pin or is wiped clean with toluene or other solvents, then dries by clean cloth.When mensuration pen. is greater than the bitumen samples 10 of 200, at least use three standard pins 9, until measured and standard pin could have been taken out from bitumen samples for three times.Get the mean value of three times as experimental result.
9) experiment terminates, and cuts off the electricity supply.
Note: the general assembly (TW) of pin connecting rod 3, knob 7 and standard pin 8 and weights is 100g, because thick head connecting rod during experiment takes off, does not therefore comprise the quality of thick head connecting rod.
The principle of work of penetrometer of the present invention:
During off working state, spring 24 is in compressive state, tightly suppresses only tight screw 26, fixes pin connecting rod 3 by the flank of thread stopping tight screw 26; After pressing release-push 30, controller controls electromagnet 21 and passes into electric current, slide bar 25 is further Compress Spring 24 under the absorption affinity of electromagnet 21, overcome spring force and move, only tight screw 26 is opened, and this hour hands connecting rod 3 can freely decline, after again pressing release-push 30, controller controls electromagnet 21 turn-off current, and slide bar 25 returns to off working state under spring 24 acts on, and only tight screw 26 pins pin connecting rod 3; After rotation knob 7 is finely tuned, asphalt test piece 10 contacts just with standard pin 8, presses into pin button 31, and controller controls opening time relay, and makes electromagnet 21 pass into electric current; After the time relay controls to reach the stipulated time (5s), controller controls electromagnet 21 interruptive current, slide bar 25 returns to off working state under Compress Spring 24 acts on, pin pin connecting rod 3, enter pin operation to be into pin button by controller control time relay with the difference of releasing operation, after stipulated time, auto-breaking pins pin connecting rod 3, and non-manual power-off.During test, the stipulated time into pin can be revised by adjustment in use button 19 as required, regulate button 19 that the amended stipulated time is sent to controller.Reset button is used to enter the stipulated time zero of pin.
Press measuring staff 1 to pin connecting rod 3 when standard pin 8 contacts with bituminous sheaths, the probe reading now on digital display meter 2, then makes zero and tests, and pressing the numerical value that measuring staff 1 now reads again after entering pin 5s is the displacement difference of initial value, i.e. penetration number.
Claims (8)
1. the bitumen needle forcemeter that a standard pin falling head is controlled, comprise control desk (13), control desk (13) is provided with perpendicular support (15), perpendicular support (15) upper end is provided with digital display meter (2), measuring staff (1) passes vertically through digital display meter (2) and can move up and down in digital display meter (2), the displacement of digital display meter (2) display measuring staff (1); Described perpendicular support (15) is provided with lateral frame (23), and lateral frame (23) is positioned at measuring staff (1) below; Described lateral frame (23) is provided with electromagnet (21) in one end of perpendicular support (15), and the other end is passed vertically through by pin connecting rod (3), and pin connecting rod (3) lower end is provided with standard pin (8); The first cavity (22-1) be connected and the second cavity (22-2) is provided with successively, the first cavity (22-1) and the second cavity (22-2) is column and the former is larger than the latter xsect in lateral frame (23) between pin connecting rod (3) to electromagnet (21); The only tight screw (26) that xsect is greater than the second cavity (22-2) is installed in the first cavity (22-1); Only tight screw (26) end thereof contacts pin connecting rod (3) side, the other end and slide bar (25) are connected, and slide bar (25) part is positioned at the first cavity (28-1), and another part is positioned at the second cavity (22-2); In the part being positioned at the first cavity (22-1) of slide bar (25), cover has spring (24), and the xsect of spring (24) is greater than the second cavity (22-2) and is less than only tight screw (26); Pin connecting rod (3) is fixed in lateral frame (23) to the thrust of stopping tight screw (26) by spring (24); It is characterized in that:
The top that slide bar (25) is positioned at the part of the second cavity (22-2) is provided with irony head (4), and irony head (4) is just to the electromagnet magnetic head (21-1) on electromagnet (21);
One end that described lateral frame (23) is provided with pin connecting rod (3) is provided with the cantilever (5) of level, and cantilever (5) below is provided with arrow (6), the end direction needle connecting rod (3) of arrow (6); Arrow (6) in the vertical direction is scalable;
Pin connecting rod (3) is provided with thick head connecting rod, and described thick head connecting rod comprises the body of rod (17), and the chuck (16) that the body of rod (17) upper end is arranged is clipped in the annular recess (20) on pin connecting rod (3) outer wall; The body of rod (17) lower end is provided with the thick head (9) of level, and the end of thick head (9) is provided with vertical cylinder, and the standard pin (8) in pin connecting rod (3) is positioned at above this cylinder and the extended line of standard pin (8) passes vertically through cylinder; The needle point of standard pin (8) and the distance of the cylinder lower surface of thick head (9) and groove (20) up and down along apart from equal;
Control desk (13) is provided with temperature control tank (11), temperature control tank (11) is provided with heater strip (12), is provided with temperature sensor (18) in Water Tank with Temp.-controlled (13); Bitumen samples (10) is placed in temperature control tank (11);
(13) are provided with control panel with control desk, control panel is provided with time digital display window (27), relay indicating light (28), temperature digital-display window (29), release-push (30), enters pin button (31), heater strip switch (32) and reset button (33), control desk is provided with the time relay and controller in (13); The described time relay, digital display meter (2), heater strip (12), temperature sensor (18), time digital display window (27), relay indicating light (28), temperature digital-display window (29), release-push (30), enter pin button (31), heater strip switch (32) is connected with controller respectively with reset button (33).
2. the bitumen needle forcemeter that standard pin falling head as claimed in claim 1 is controlled, it is characterized in that, the built-in induction chip isometric with it of described measuring staff (1), this induction chip is demarcated from the bottom to top, and digital display meter is equipped with the probe that can read the numerical value demarcated in induction chip in (2).
3. the bitumen needle forcemeter that standard pin falling head as claimed in claim 1 is controlled, it is characterized in that, described pin connecting rod (3) is provided with external thread, and the inwall of the lateral frame (23) that pin connecting rod (3) contacts is provided with internal thread.
4. the bitumen needle forcemeter that standard pin falling head as claimed in claim 1 is controlled, it is characterized in that, the lower end fixed knob (7) of described pin connecting rod (3), standard pin (8) is vertically fixed on knob (7) lower end; Knob (7) is integrated with pin connecting rod (3) and standard pin (8); The upper edge of described knob (7) is lower to concordant with groove (20).
5. the bitumen needle forcemeter that standard pin falling head as claimed in claim 1 is controlled, is characterized in that, described control desk (13) bottom surface is provided with multiple adjusting knob (14).
6. the bitumen needle forcemeter that standard pin falling head as claimed in claim 1 is controlled, is characterized in that, described chuck (16) adopts spring clamp.
7. the bitumen needle forcemeter that standard pin falling head as claimed in claim 1 is controlled, is characterized in that, the distance of edge up and down of described groove (20) is 10mm, and the distance of the needle point of standard pin and the cylinder lower surface of thick head (9) is 10mm.
8. the bitumen needle forcemeter that standard pin falling head as claimed in claim 1 is controlled, it is characterized in that, described chuck (16) is highly 10mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310300783.0A CN103439221B (en) | 2013-07-17 | 2013-07-17 | The bitumen needle forcemeter that standard pin height of drop is controlled |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310300783.0A CN103439221B (en) | 2013-07-17 | 2013-07-17 | The bitumen needle forcemeter that standard pin height of drop is controlled |
Publications (2)
| Publication Number | Publication Date |
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| CN103439221A CN103439221A (en) | 2013-12-11 |
| CN103439221B true CN103439221B (en) | 2015-08-05 |
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| CN201310300783.0A Expired - Fee Related CN103439221B (en) | 2013-07-17 | 2013-07-17 | The bitumen needle forcemeter that standard pin height of drop is controlled |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103994950A (en) * | 2014-05-12 | 2014-08-20 | 南通市建筑科学研究院有限公司 | An asphalt penetration testing device |
| CN104132869A (en) * | 2014-07-14 | 2014-11-05 | 上海宇航系统工程研究所 | Apparatus for rapidly testing stimulated lunar soil porosity, and method thereof |
| CN104280316A (en) * | 2014-09-28 | 2015-01-14 | 广东惠利普路桥信息工程有限公司 | Asphalt penetration tester capable of changing needles |
| CN104297105A (en) * | 2014-10-21 | 2015-01-21 | 中山市拓维电子科技有限公司 | Asphalt penetration test tool |
| CN104849177A (en) * | 2015-05-21 | 2015-08-19 | 河海大学 | Novel penetrometer of asphalt laboratory and implementation process |
| CN110082260A (en) * | 2018-01-26 | 2019-08-02 | 南京林业大学 | A kind of experimental teaching unit of multifunctional measuring depth of penetration |
| CN110082262B (en) * | 2019-04-16 | 2024-05-10 | 交通运输部公路科学研究所 | Automatic needle penetration instrument and needle alignment method thereof |
| CN113267425A (en) * | 2021-06-25 | 2021-08-17 | 郑州磨料磨具磨削研究所有限公司 | Device and method for testing hardness of semi-solid extrusion abrasive material flow |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4021178A1 (en) * | 1990-07-03 | 1992-01-09 | Krautkraemer Gmbh | Measuring hardness using penetrating pointed rod - pushed by force e.g. wt. also used to hold retaining part for sample |
| GB2341936B (en) * | 1998-09-23 | 2000-08-16 | Adas Consulting Ltd | Measuring the energy absorbing capacity of a substrate |
| CN2466216Y (en) * | 2000-12-15 | 2001-12-19 | 中国科学院力学研究所 | Portable soil penetrometer |
| DE10257170B4 (en) * | 2002-12-03 | 2005-12-29 | Petrotest Instruments Gmbh & Co.Kg | Method for determining the degree of hardness of semi-solid materials |
| CN100362334C (en) * | 2004-06-30 | 2008-01-16 | 南京大学 | Ultramicroscopic penetrometer |
| US7617718B2 (en) * | 2005-12-13 | 2009-11-17 | Sandy Golgart Sales, Inc. | Device and methods for use of a dynamic cone penetrometer for evaluating soil compaction |
| CN101539567B (en) * | 2009-04-14 | 2013-04-03 | 江南大学 | Full-automatic petroleum asphalt penetration measuring instrument |
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2013
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