CN216816374U - Asphalt cement cone penetration tester - Google Patents

Abstract

The utility model discloses an asphalt mortar taper penetration tester, and relates to the technical field of asphalt mortar performance evaluation; an asphalt cement cone penetration tester mainly comprises a trapezoidal workbench, a sample containing vessel, round level bubbles, lifting support legs, a support frame, a measuring device, a lifting device and a fixing frame, wherein the lifting support legs are symmetrically arranged at four corners of the bottom of the trapezoidal workbench, the support frame is arranged at the center of the rear part of the trapezoidal workbench, the measuring device is vertically arranged above the sample containing vessel, the lifting device can longitudinally slide on the support frame, and the fixing frame is used for connecting the lifting device and the measuring device; the instrument can be used for directly measuring the penetration of the asphalt mortar, so that the operation difficulty of experimenters is reduced, and the test efficiency is obviously improved; the whole testing instrument is reasonably designed, so that the testing precision is ensured, the testing error is reduced, and the using effect and the economic benefit are good.

Description

Asphalt cement cone penetration tester

Technical Field

The utility model relates to the technical field of asphalt cement performance evaluation, in particular to an asphalt cement cone penetration tester.

Background

The asphalt mixture consists of asphalt mucilage and aggregate, and what really plays a role in bonding in the mixture is asphalt mucilage formed by asphalt and mineral powder. The penetration index is mostly adopted in the technical standard of asphalt, but because the asphalt cement is a heterogeneous material with two mixed phases, besides mineral powder substances contained in common asphalt cement, various fibers are dispersed in different fiber asphalt cements, the standard needle of the penetration test is thinner, and the test result is inaccurate when the standard needle penetrates particles or other substances. In addition, the cone penetration is more sensitive to factors affecting the performance of the asphalt mortar than the needle penetration, the measurement stability is better, and the technical performance of the asphalt mortar can be reflected more truly.

The asphalt mastic cone penetration test substantially reflects the size of the shearing resistance of the asphalt mastic, namely the smaller the cone penetration, the higher the shearing resistance, the cone penetration test can calculate the shearing resistance index by measuring the cone penetration of the asphalt mastic and utilizing a relevant formula, and the asphalt mastic cone penetration test has a better effect in the aspect of research and evaluation of the high-temperature performance of various asphalt mastics. The shear strength of the asphalt cement has important influence on the high-temperature stability of the asphalt mixture, and the cone penetration shear strength of the asphalt cement has better correlation with the anti-rutting factor and the rotational viscosity. In addition, compared with other performance tests of the asphalt cement, the asphalt cement cone penetration test has the advantages of simple steps, small volume of instruments and equipment, low manufacturing cost and convenience in operation and transportation.

At present, the shear strength of various asphalt cements can be measured by calculating the cone penetration test result, but an integral test instrument is not yet available for the cone penetration test of the asphalt cement, and the cone penetration test of the asphalt cement can be carried out by modifying other similar test instruments, and the shear strength can be calculated by using the shear strength test method of test soil in geotechnical tests, namely measuring the cone penetration depth of a test cone with certain mass in the asphalt cement within fixed time; replacing a standard needle of a common penetrometer with a special conical needle, and arranging a connecting rod and a weighted weight on the conical needle for testing; thirdly, the shear strength of the asphalt mortar is calculated by testing the sinking depth of the asphalt sinker after the cement mortar consistometer is modified. Under the same test condition, the smaller the penetration depth, the higher the shear strength and the better the high-temperature stability of the asphalt cement.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model aims to provide an asphalt cement cone penetration tester, which solves the problem of the vacancy of the existing asphalt cement cone penetration tester, can adjust the horizontal height of a measuring device and the horizontal height of the whole tester, and obviously improves the testing efficiency and the measuring precision.

In order to achieve the above purpose, the utility model provides the following technical scheme:

the utility model provides an asphalt mastic awl income degree apparatus, including trapezoidal workstation for place the flourishing appearance ware of asphalt mastic, set up in be used for fixing on the trapezoidal workstation flourishing appearance ware the spacing portion of annular set up in flourishing appearance ware top is used for measuring the measuring device of asphalt mastic awl income degree, set up in anterior round level bubble in trapezoidal workstation left side sets up in the lift stabilizer blade of four corner symmetric distributions in trapezoidal workstation bottom to and set up perpendicularly the support frame at trapezoidal workstation rear portion center, be provided with the elevating gear who is used for height-adjusting on the support frame, elevating gear pass through the mount with measuring device connects.

As a further scheme of the utility model, a groove is arranged above the rear part of the support frame, a bulge is arranged at the front part of the support frame, and the bottom of the support frame is connected with a fixing ring and fixed on the trapezoidal workbench.

As a further scheme of the utility model, a fixing nut is arranged at the rear part of the lifting device, the support frame is fixedly connected with the lifting device by screwing the fixing nut, a longitudinal sliding groove is arranged in the middle of the lifting device, the longitudinal sliding groove penetrates through the top of the support frame to enable the lifting device to be connected with the support frame, a through sliding groove is arranged at the front end of the lifting device, a fine adjustment nut is arranged beside the through sliding groove of the lifting device, the fine adjustment nut penetrates through a hole beside the through sliding groove to be fixed on the lifting device, and a driving gear is arranged in the through sliding groove at one end of the fine adjustment nut.

As a further scheme of the utility model, the fixed frame comprises a connecting rod, a sleeve connected with the connecting rod, an annular connecting rod, an instrument panel connected with the annular connecting rod, and a slider arranged at the rear part of the fixed frame and connected with the lifting device, the slider is arranged in a T shape, the bottom of the slider is connected with the fixed frame, a row of straight teeth meshed with the driving gear is arranged in the middle of the outer side of the slider, and the slider penetrates through a through chute at the front end of the lifting device to enable the straight teeth to be meshed with the driving gear.

As a further scheme of the utility model, the measuring device comprises a straight rod and a test cone, a rack is arranged at the top of the straight rod, an instrument panel is connected with the rack, a triangular bump is arranged in the middle of the straight rod, and a threaded hole is formed in the bottom of the straight rod.

As a further scheme of the utility model, the test cone comprises a screw rod connected with the straight rod, a cylindrical block connected with the screw rod and a cone connected with the cylindrical block, wherein the upper part of the screw rod is provided with a thread, and the test cone is connected with the straight rod through the thread.

As a further scheme of the utility model, a T-shaped sliding groove is transversely arranged in the middle of the sleeve, so that a T-shaped sliding block can horizontally slide along the T-shaped sliding groove, an elastic part is arranged at one end of the T-shaped sliding groove and connected with one end of the T-shaped sliding block, and a sliding groove for the straight rod to longitudinally slide is further arranged in the center of the sleeve.

As a further scheme of the utility model, the lifting support leg comprises a fixed block, a rotary lifting rotating wheel, a rotary lifting bolt and a cushion block, the rotary lifting rotating wheel is connected with the fixed block and fixed at the bottom of the trapezoidal workbench, the rotary lifting rotating wheel is in threaded connection with the rotary lifting bolt, and the bottom of the rotary lifting bolt is connected with the cushion block and can be placed in a test field.

Compared with the prior art, the utility model has the beneficial effects that:

(1) the asphalt cement cone penetration tester is designed, the problem that no instrument capable of directly testing the asphalt cement cone penetration exists in the current market is solved, the cone penetration of the asphalt cement can be directly tested by using the instrument, the operation difficulty of experimenters is reduced, and the test efficiency is obviously improved; the whole testing instrument is reasonably designed, the testing precision is guaranteed, the testing error is reduced, and the using effect and the economic benefit are good.

(2) Be provided with four lift stabilizer blades in trapezoidal workstation bottom corner, can adjust the level of test instrument, the round level bubble on the trapezoidal workstation of cooperation simultaneously for the experiment can be gone on under the instrument horizontal condition. The test error caused by the fact that the test cone is not perpendicular to the top surface of the asphalt mortar in the test process or the friction force is increased when the test cone falls down due to the fact that the test field is not flat is avoided, and the calculated value of the shear strength of the asphalt mortar is not consistent with the actual value.

(3) The lifting device can vertically slide on the upper part of the support frame, the measuring device is connected with the lifting device through a fixing frame, coarse adjustment and fine adjustment of the horizontal height of the measuring device can be respectively completed through a fixing nut and a fine adjustment nut on the lifting device, and an annular limiting part is further arranged on the trapezoidal workbench and can be used for fixing the sample containing vessel; the device provides various test conditions, and is convenient for test personnel to perform test operation and install, replace and clean the sample containing vessel.

Drawings

FIG. 1 is a left side view of an asphalt cement cone penetration tester.

Fig. 2 is a front view of an asphalt cement cone penetration tester.

Fig. 3 is a schematic structural diagram of a lifting device and a fixing frame of an asphalt cement cone penetration tester.

Fig. 4 is a schematic structural diagram of a sleeve of an asphalt cement cone penetration tester.

Fig. 5 is a schematic structural diagram of a lifting support leg of an asphalt cement cone penetration tester.

In the figure: 1. a trapezoidal workbench; 2. a support frame; 21. a groove; 22. a fixing ring; 23. a boss portion; 3. a lifting device; 31. fixing a nut; 32. fine adjustment of the nut; 321. a driving gear; 33. a through chute; 34. a longitudinal chute; 4. a fixed mount; 41. a connecting rod; 42. a sleeve; 421. a T-shaped slider; 422. an elastic member; 423. a limiting chute; 424. a T-shaped chute; 425. a triangular bump; 43. an annular connecting rod; 44. an instrument panel; 45. a slider; 46. straight teeth; 5. a measuring device; 51. a straight rod; 52. a standard hammer; 511. a rack; 512. a triangular bump; 513. a threaded hole; 521. a screw rod; 522. a cylindrical block; 523. a vertebral body; 6. a sample containing vessel; 7. a circular level bubble; 8. an annular limiting part; 9. a lifting support leg; 91. a fixed block; 92. rotating and lifting the rotating wheel; 93. rotating the lifting bolt; 94. and a cushion block.

Detailed Description

The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 and 2, the asphalt cement cone penetration tester disclosed by the utility model comprises a trapezoidal workbench 1, lifting support legs 9 arranged at four corners at the bottom of the trapezoidal workbench 1, circular level bubbles 7 arranged at the left front part above the trapezoidal workbench 1, an asphalt cement sample container 6 arranged on the trapezoidal workbench 1, an annular limiting part 8 capable of fixing the sample container 6, a measuring device 5 vertically arranged at the top of the sample container 6, a support frame 2 vertically arranged at the rear part of the trapezoidal workbench 1, a lifting device 3 capable of longitudinally sliding on the support frame 2, and a fixing frame 4 connecting the lifting device 3 and the measuring device 5.

Referring to fig. 1, the rear of the upper portion of the support frame 2 is provided with a groove 21, the front portion is provided with a protruding portion 23, the bottom portion is connected with a fixing ring 22, the bottom portion of the support frame 2 can penetrate through the fixing ring 22 to be fixed above the rear portion of the trapezoidal workbench, and therefore the support frame 2 and a lifting device connected with the support frame can be stably arranged above the trapezoidal workbench 1, corresponding experiment bases are provided, and measuring accuracy is guaranteed.

Referring to fig. 1 and 3, the lifting device 3 includes a fixing nut 31 disposed at the middle of the rear portion, a longitudinal through chute 33 disposed at the front end, and a fine adjustment nut 32 disposed beside the through chute 33, wherein the fixing nut 31 can pass through the hole to abut against the groove 21 on the support frame 2, the plane of the through chute 33 is disposed in an asymmetric cross shape, and one end of the fine adjustment nut 32 passes through the hole on the lifting device 3 to be disposed in the through chute 33 and is provided with a driving gear 321. So set up, 2 upper portions of support frame correspond recess 21 departments can be located to elevating gear 3 cover, and elevating gear 3 can be guaranteed not to rotate at the horizontal plane by bellying 23, makes its one end carry out the butt with recess 21 on the support frame 2 through rotatory fine setting nut 32, accomplishes to go up and down to adorn 3 and support frame 2 and is connected fixedly, when carrying out the test and survey, accessible screwing (unscrewing) fixation nut 31 carries out the rough adjustment and the fixed of elevating gear 3 and other device height of being connected.

Referring to fig. 1 and 3, the fixing frame 4 includes a sleeve 42 sleeved on an outer wall of the measuring device 5, a connecting rod 41 connecting the sleeve 42 and a frame body of the fixing frame 4, an instrument panel 44 above the sleeve 42, an annular connecting rod 43 connecting the instrument panel 44 and the frame body of the fixing frame 4, and a slider 45 disposed at a rear portion of the fixing frame 4; the sliding block 45 is arranged in a T shape, the bottom of the sliding block 45 is connected with the fixed frame 4, the middle of the outer side of the sliding block 45 is provided with a row of longitudinal straight teeth 46, and the sliding block 45 can penetrate through the cross-shaped through sliding chute 33 on the lifting device to slide longitudinally; further, the spur gear 46 of the slider 45 can be engaged with the drive gear 321 of the lifting device 3. The arrangement is that the fixed frame 4 and the lifting device 3 are connected with the sliding chute through the sliding block, and the driving gear 321 on the lifting device 3 is meshed with the straight teeth 46 on the sliding block 45, so that the displacement of the fixed frame 4 in the vertical direction can be limited, and the longitudinal height can be adjusted; when testing and testing, the accessible is rotatory fine setting nut 32 clockwise (anticlockwise), reduces (risees) mount 4 and rather than connecting device's vertical height, accomplishes testing arrangement 5's fine setting step for the experiment can be gone on under different conditions, and the removal and the laying of the flourishing appearance ware 6 of being convenient for promote testing personnel's work efficiency.

Referring to fig. 4, a limiting sliding groove 423 is longitudinally arranged in the middle of the sleeve 42, a T-shaped sliding groove 424 is transversely arranged, an elastic member 422 is arranged at one end of the T-shaped sliding groove 424, a T-shaped sliding block 421 is further arranged in the T-shaped sliding groove 424, the T-shaped sliding block 421 can slide along the T-shaped sliding groove 424, one end of the T-shaped sliding block 421 is connected with the elastic member 422, and a triangular protrusion 425 is arranged at the other end of the T-shaped sliding block 421 and abuts against a triangular protrusion 512 on the measuring device 5. So set up, can guarantee that measuring device 5's straight-bar 51 vertically slides along spacing spout 423 inside sleeve 42, two triangle lugs can mutual butt make testing device 5 not drop downwards because of its dead weight inside sleeve 42 fixed, T shape slider 421 can resume to initial position after elastic component 42 one end sliding in T shape spout 424 under the human action. When carrying out the test and survey, the experimenter stirs T shape slider 421 in the outside one side of sleeve 42 backward for measuring device 5 slides down under the influence of gravity, surveys the asphalt mastic, can promote measuring device 5 after the survey is accomplished and fix once more upwards.

Referring to fig. 1 and 2, the measuring device 5 includes a straight rod 51 and a test cone 52, a rack 511 is arranged at the top of the straight rod 51 and connected with the instrument panel 44, a triangular bump 512 is arranged at the middle part, and a threaded hole 513 is arranged at the bottom; the test cone 52 comprises a screw rod 521 connected with the straight rod 51, a cylindrical block 522 connected with the screw rod 521, and a cone 523 connected with the cylindrical block 522, wherein the upper part of the screw rod 521 is provided with a thread 524. With the arrangement, the rack 511 is connected with the instrument panel 44, so that after the measuring device 5 performs asphalt cement cone penetration measurement due to dead weight, the instrument panel 44 displays the cone penetration depth of the test cone 52 for a tester to read; meanwhile, the test cone 52 can be replaced under the conditions of measuring different kinds of asphalt mucilage or other specific test conditions, so that different test conditions are provided for the test.

Referring to fig. 1 and 5, the lifting support leg includes a fixing block 91, a rotary lifting wheel 92, a rotary lifting bolt 93 and a cushion block 94, wherein the rotary lifting wheel 92 and the fixing block 91 are connected and fixed at four corners of the bottom of the trapezoidal workbench, the rotary lifting wheel 92 and the rotary lifting bolt 93 are connected through threads, and the bottom of the rotary lifting bolt 93 is connected with the cushion block and can be placed in a test site. According to the arrangement, the rotary lifting wheel 92 is rotated clockwise (anticlockwise) to enable the rotary lifting bolt 93 to be lifted (lowered), and meanwhile, the whole instrument is leveled and arranged in cooperation with the circular leveling air bubble 7 arranged on the trapezoidal workbench; when carrying out the test and survey, whether the place is level and smooth is an important factor that influences the test result, directly or indirectly leads to the test result to appear the error, and the test instrument is not levelly and smoothly laid for try awl 52 becomes certain angle with pitch adhesive cement top surface when the whereabouts, perhaps straight-bar and sleeve 42 inner wall frictional force increase when trying awl 52 whereabouts, and the error will all appear in the awl income degree, so that pitch adhesive cement shear strength calculated value is inconsistent with reality.

The working principle is as follows: when the asphalt mortar conicity instrument is used, firstly, the instrument is stably placed at the flat part of a test site; whether the circular level bubble 7 on the trapezoidal workbench 1 is centered or not is observed, if not, the four lifting support legs 9 are respectively adjusted, and the rotary lifting bolt 93 is lifted or lowered by rotating the rotary lifting runner 92 on the lifting support legs 9 until the circular level bubble is centered 7, so that the leveling work of the whole instrument is completed. And (3) rotatably butting the thread 524 on the upper part of the test cone 52 with the threaded hole 513 on the lower part of the measuring device 5, and observing whether the cone 523 is vertical after screwing.

After the work above, take out and place the flourishing appearance ware 6 of asphalt mastic in annular spacing portion 8, pour the asphalt mastic who prepares into flourishing appearance ware 6, notice and inject the bubble when avoiding the die filling, wait that asphalt mastic cools off and steadily place flourishing appearance ware 6 in annular spacing portion 8 after to test temperature.

After the sample vessel 6 is set, rough adjustment and fine adjustment of the measuring device 5 are performed. The fixing nut 31 on the lifting device 3 is rotated, so that the lifting device 3 can vertically slide on the support frame 2, and when the test cone 52 is close to the position 1-2 cm above the sample containing vessel 6, the fixing nut 31 is screwed, so that the lifting device 5 can be fixed. And rotating the fine adjustment nut 32 clockwise to enable the fixed frame 4 and the measuring device 5 to vertically slide downwards until the top of the conical head 52 is just contacted with the top surface of the asphalt cement test piece in the sample containing vessel 6, and stopping rotating the fine adjustment nut 32 to finish fine adjustment work.

After the corresponding preparation work is finished, the cone penetration of the asphalt cement is measured; and (3) pulling the T-shaped sliding block 421 backwards to one side outside the sleeve 42 and starting timing, slowly tapering the measuring device 5 into the asphalt mastic test piece under the action of self gravity, reading the scale of the pointer of the instrument panel 44 after 10s to obtain the taper penetration of the asphalt mastic, and calculating the shear strength index of the asphalt mastic by using a related formula.

After the test is finished, the straight rod 51 of the measuring device 5 is lifted upwards, so that the cone 523 is separated from the asphalt cement specimen completely until the measuring device 5 is fixed with the sleeve 42 and does not fall; loosening the fixing nut 31 on the lifting device 3, and vertically lifting the lifting device 3 and other devices connected with the lifting device upwards until the sample containing vessel 6 can be taken out of the annular fiber part 8, and cleaning the sample containing vessel 6 of the asphalt cement.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.

Claims (8)

1. An asphalt cement cone penetration tester is characterized by comprising a trapezoidal workbench (1), a sample containing vessel (6) for containing asphalt mastic, an annular limiting part (8) which is arranged on the trapezoidal workbench (1) and used for fixing the sample containing vessel (6), a measuring device (5) which is arranged above the sample containing vessel (6) and used for measuring the penetration of the asphalt mastic, a round level bubble (7) which is arranged at the left front part above the trapezoidal workbench (1), and lifting support legs (9) which are symmetrically distributed at four corners at the bottom of the trapezoidal workbench (1), and a supporting frame (2) vertically arranged at the center of the rear part of the trapezoidal workbench (1), a lifting device (3) for adjusting the height is arranged on the supporting frame (2), the lifting device (3) is connected with the measuring device (5) through a fixing frame (4).

2. The asphalt cement cone penetration tester according to claim 1, characterized in that: support frame (2) rear portion top is equipped with recess (21), and the front portion is equipped with bellying (23), support frame (2) bottom is connected with solid fixed ring (22) and is fixed in trapezoidal workstation (1).

3. The asphalt cement cone penetration tester according to claim 1, characterized in that: elevating gear (3) rear portion is equipped with fixation nut (31), support frame (2) are through screwing fixation nut (31) with elevating gear (3) are connected fixedly, elevating gear (3) middle part is provided with vertical spout (34), vertical spout (34) are passed support frame (2) top makes elevating gear (3) with support frame (2) are connected, elevating gear (3) front end is provided with link up spout (33), elevating gear (3) in link up spout (33) and be equipped with on one side fine setting nut (32), fine setting nut (32) are passed link up spout (33) hole on one side and be fixed in elevating gear (3), fine setting nut (32) one end in link up and be equipped with driving gear (321) in spout (33).

4. The asphalt cement cone penetration tester according to claim 3, characterized in that: mount (4) including connecting rod (41), with sleeve (42), annular connecting rod (43) that connecting rod (41) are connected, with panel board (44) that annular connecting rod (43) are connected, and mount (4) rear portion be used for with slider (45) that elevating gear (3) are connected, the slider is the T shape setting, slider (45) bottom with mount (4) are connected, slider (45) outside middle part be provided with one row of straight-teeth (46) of driving gear (321) meshing, slider (45) pass link through spout (33) of elevating gear (3) front end makes straight-teeth (46) with driving gear (321) meshing.

5. The asphalt cement cone penetration tester according to claim 4, characterized in that: the measuring device (5) comprises a straight rod (51) and a test cone (52), a rack (511) is arranged at the top of the straight rod (51), an instrument panel (44) is connected with the rack (511), a triangular bump (512) is arranged in the middle of the straight rod (51), and a threaded hole (513) is formed in the bottom of the straight rod (51).

6. The asphalt cement cone penetration tester according to claim 5, characterized in that: the test cone (52) comprises a screw rod (521) connected with the straight rod (51), a cylindrical block (522) connected with the screw rod (521), and a cone body (523) connected with the cylindrical block (522), wherein the upper part of the screw rod (521) is provided with a thread (524), and the test cone (52) is connected with the straight rod (51) through the thread (524).

7. The asphalt cement cone penetration tester according to claim 5, characterized in that: the middle of the sleeve (42) is transversely provided with a T-shaped sliding groove (424) so that a T-shaped sliding block (421) can horizontally slide along the T-shaped sliding groove (424), one end of the T-shaped sliding groove (424) is provided with an elastic piece (422) connected with one end of the T-shaped sliding block (421), and the central part of the sleeve (42) is further provided with a limiting sliding groove (423) for the straight rod (51) to longitudinally slide.

8. The asphalt cement cone penetration tester according to claim 1, characterized in that: the lifting support leg (9) comprises a fixing block (91), a rotary lifting rotating wheel (92), a rotary lifting bolt (93) and a cushion block (94), the rotary lifting rotating wheel (92) is connected with the fixing block (91) and fixed at the bottom of the trapezoidal workbench (1), the rotary lifting rotating wheel (92) is connected with the rotary lifting bolt (93) through threads, and the bottom of the rotary lifting bolt (93) is connected with the cushion block (94) and can be placed in a test field.

Images