Asphalt penetration measuring device

Abstract

The utility model provides an asphalt penetration measuring device, which comprises a base, a plurality of connecting rods and a plurality of connecting rods, the testing unit is arranged on the guide threaded rod, and the testing unit comprises a testing needle; the constant-temperature box is provided with a constant-temperature cavity, a supporting seat is arranged at the axis of the constant-temperature cavity, an adjusting seat is arranged on the supporting seat, a supporting rod is arranged on the adjusting seat, an auxiliary support is arranged on the supporting rod, and a guide block matched with the test needle is arranged on the auxiliary support in a sliding mode; a test cartridge. According to the asphalt penetration measuring device provided by the utility model, the test box is placed in the constant-temperature box, the test needle is guided by the guide blocks to measure asphalt during detection, and a plurality of guide blocks are arranged, so that the test needle can be far away from or close to the center of the test box to carry out multi-point measurement, and the accuracy of a detected numerical value is further improved.

Description

Technical Field

[0001] This utility model relates to the field of testing equipment technology, and more specifically to an asphalt penetration measuring device. Background Technology

[0002] Asphalt is an organic material composed of various compounds. It has high water and corrosion resistance and is often used in road engineering to protect the road surface. Asphalt is a dark brown semi-solid substance that is insoluble in water and has high viscosity.

[0003] Asphalt penetration is a test method that reflects the viscosity of asphalt. Asphalt is injected into a test box, and the test bowl is placed in a water bath at 25°C. After a period of time, the test needle is inserted into the asphalt within a specified time, and the penetration value is recorded. Multiple experiments are conducted to compare the data in order to determine whether the asphalt viscosity is correct.

[0004] However, in the asphalt testing process, the test needle is often placed at the top of the test box and in the center for single-point testing. Since the accuracy of the test data provided by single-point testing is limited, it is not possible to accurately determine the effective value of asphalt viscosity. Utility Model Content

[0005] The purpose of this invention is to solve the aforementioned problems in the existing technology.

[0006] To achieve the above objectives, this utility model can be implemented through the following technical solution: an asphalt penetration measuring device, comprising:

[0007] A base, on which a guide threaded rod is provided;

[0008] A test unit is disposed on the guide threaded rod, and the test unit includes a test pin;

[0009] A constant temperature chamber, wherein the constant temperature chamber has a constant temperature cavity, a support base is provided at the center of the constant temperature cavity, an adjustment base is provided on the support base, a support rod is provided on the adjustment base, an auxiliary bracket is provided on the support rod, and a guide block that cooperates with the test probe is slidably provided on the auxiliary bracket;

[0010] The test box is disposed between the auxiliary support and the adjustment base and cooperates with the test probe.

[0011] In this embodiment of the utility model, the auxiliary support is provided with a sliding groove, and a scale line is provided on one side of the sliding groove. The guide block cooperates with the sliding groove.

[0012] In this embodiment of the utility model, the testing unit further includes a dial indicator, a cylinder, a swing arm, and a guide cylinder disposed on the swing arm. A telescopic rod is slidably disposed inside the guide cylinder. One end of the telescopic rod engages with the test needle, while the other end contacts the dial indicator. The dial indicator is engaged with the guide cylinder, and the swing arm cooperates with the guide threaded rod.

[0013] The cylinder is located on one side of the guide cylinder, and the output end of the cylinder is provided with a connecting plate that cooperates with the telescopic rod.

[0014] In this embodiment of the utility model, a top cover is threadedly connected to the telescopic rod, and a conical locking block is provided between the top cover and the telescopic rod. The test probe is locked at the axis of the conical locking block.

[0015] In this embodiment of the utility model, the swing arm includes a first connecting rod, a second connecting rod, and a third connecting rod slidably connected to the guide threaded rod. The third connecting rod is provided with a knob that cooperates with the guide threaded rod.

[0016] The third connecting rod is rotatably connected to the second connecting rod, the second screw is rotatably connected to the first screw, and the first screw supports the guide cylinder.

[0017] In this embodiment of the utility model, the second connecting rod is provided with a lever that cooperates with the first connecting rod, and the third connecting rod is provided with a locking member that cooperates with the second connecting rod.

[0018] In this embodiment of the utility model, a guide groove is provided on the guide threaded rod, and the third connecting rod slides within the guide groove.

[0019] In this embodiment of the utility model, a heating plate is provided at the bottom of the constant temperature box, a top plate is provided on the heating plate, and a heating wire is provided between the top plate and the heating plate;

[0020] The base is provided with a conical protrusion, which cooperates with the heating plate.

[0021] In this embodiment of the utility model, a connector that mates with the heating wire is provided on the conical protrusion, and a temperature measuring rod is provided on one side of the connector.

[0022] In this embodiment of the utility model, the heating plate has symmetrically formed grooves.

[0023] Compared with the prior art, the advantages of this application are: the test box is placed in a constant temperature chamber, and during the test, the test needle is guided by a guide block to measure the asphalt. Moreover, multiple guide blocks are set so that the test needle can be far away from or close to the center of the test box for multi-point measurement, thereby improving the accuracy of the test values. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure;

[0025] Figure 2 This is a schematic diagram of the internal parts assembly structure of a partial cross-section of a constant temperature chamber;

[0026] Figure 3 yes Figure 2 Enlarged view of part A in the middle;

[0027] Figure 4 This is a schematic diagram of the overall structure of the test unit;

[0028] Figure 5 This is a schematic diagram of the exploded structure of the internal parts of the incubator;

[0029] Figure 6 This is a partial cross-sectional plan view of the constant temperature chamber.

[0030] Explanation of reference numerals in the attached figures:

[0031] 1. Base; 11. Temperature measuring rod; 12. Connector; 13. Display panel; 14. Control button; 15. Conical protrusion; 16. Elevating block; 2. Guide threaded rod; 21. Guide groove; 22. Support plate; 3. Test unit; 31. Swing arm; 310. First connecting rod; 311. Lever; 312. Second connecting rod; 313. Knob; 314. Third connecting rod; 315. Locking element; 32. Cylinder; 33. Dial indicator; 3 4. Guide cylinder; 35. Telescopic rod; 351. Top cover; 352. Conical locking block; 36. Test probe; 37. Connecting plate; 4. Constant temperature chamber; 41. Auxiliary bracket; 411. Hand grip; 412. Scale line; 413. Slide groove; 414. Guide block; 42. Support rod; 43. Adjustment seat; 44. Support seat; 441. Suction cup; 45. Test box; 46. Heating plate; 461. Top plate; 462. Groove; 47. Heating wire. Detailed Implementation

[0032] The following are specific embodiments of the present invention, and the technical solution of the present invention will be further described in conjunction with the accompanying drawings.

[0033] like Figure 1-6 As shown, an asphalt penetration measuring device includes:

[0034] Base 1, with a guide threaded rod 2 provided on base 1;

[0035] Test unit 3 is disposed on guide thread rod 2, and test unit 3 includes test needle 36;

[0036] The constant temperature chamber 4 has a constant temperature cavity. A support seat 44 is provided at the center of the constant temperature cavity. An adjustment seat 43 is provided on the support seat 44. A support rod 42 is provided on the adjustment seat 43. An auxiliary bracket 41 is provided on the support rod 42. A guide block 414 that cooperates with the test needle 36 is slidably provided on the auxiliary bracket 41.

[0037] Test box 45 is positioned between auxiliary bracket 41 and adjustment seat 43 and cooperates with test needle 36.

[0038] Specifically, the base 1 has a display panel 13 and a temperature control button 14. The display panel 13 displays the temperature value detected by the temperature measuring rod 11. A shim block 16 is provided at the bottom of the base 1 to improve the stability of the device during testing. First, adjust the guide block 414 on the auxiliary support 41, place the test box 45 containing asphalt on the adjusting seat 43, and then cover the auxiliary support 41 directly above the test box 45. The test needle 36 of the test unit 3 is then used to measure the asphalt through the guide block 414 to improve the accuracy of the asphalt measurement data.

[0039] As a further embodiment of this utility model, the auxiliary support 41 is provided with a sliding groove 413, and a scale line 412 is provided on one side of the sliding groove 413. The guide block 414 cooperates with the sliding groove 413. The scale line 412 can control the position of the guide block 414, so as to control the distance between the guide block 414 and the axis of the auxiliary support 41, that is, to adjust the distance between the guide block 414 and the axis of the test box 45, so as to make the asphalt needle penetration test data more accurate. A handle 411 is provided on the auxiliary support 41. When the test box 45 is placed on the adjusting seat 43, the auxiliary support 41 can be installed above the test box 45 by holding the handle 411. The adjusting seat 43 is slidably connected to the support seat 44, and the height of the test box 45 can be adjusted. The support seat 44 is provided with a suction cup 441 that cooperates with the constant temperature chamber 4 to improve the fixing effect of the support seat 44.

[0040] As a further embodiment of this utility model, the test unit 3 also includes a dial indicator 33, a cylinder 32, a swing arm 31, and a guide cylinder 34 disposed on the swing arm 31. A telescopic rod 35 is slidably disposed inside the guide cylinder 34. One end of the telescopic rod 35 engages with the test needle 36, while the other end contacts the dial indicator 33. The dial indicator 33 is engaged with the guide cylinder 34. The swing arm 31 cooperates with the guide threaded rod 2. The cylinder 32 is disposed on one side of the guide cylinder 34, and the output end of the cylinder 32 is provided with a connecting plate 37 that cooperates with the telescopic rod 35. When the test needle 36 is installed on the guide cylinder 34, the cylinder 32 is retracted to the zero position, and the dial indicator 33 is installed. The test head of the dial indicator 33 is compressed when it is mounted on the guide cylinder 34 and contacts the telescopic rod 35. The dial is then rotated to align the zero point with the scale line 412. The rotation is then used to control the test needle 36 to approach the test box 45. The swing arm 31 is then adjusted to align the test needle 36 with the center hole at the axis of the guide block 414. The swing arm 31 slides downward to make the test needle 36 contact the asphalt surface, completing the preparatory work before the test. Then, the cylinder 32 outputs force to make the test needle 36 fall for 5 seconds. The jump of the pointer of the dial indicator 33 is read. The cylinder 32 is retracted to perform multiple measurements. It is important to note that the force output by the cylinder 32 is always consistent during each test to ensure the accuracy of the asphalt measurement.

[0041] As a further embodiment provided by this utility model, a top cover 351 is threaded onto the telescopic rod 35, and a conical locking block 352 is provided between the top cover 351 and the telescopic rod 35. The test needle 36 is locked at the axis of the conical locking block 352. The test needle 36 is inserted into the through hole at the axis of the conical locking block 352, and then the top cover 351 is rotated so that the top rod presses the conical locking block 352 to fix the test needle 36, thereby improving the installation effect of the test needle 36.

[0042] As a further embodiment of this utility model, the swing arm 31 includes a first connecting rod 310, a second connecting rod 312, and a third connecting rod 314 slidably connected to the guide threaded rod 2. The third connecting rod 314 is provided with a knob 313 that cooperates with the guide threaded rod 2. The third connecting rod 314 is rotatably connected to the second connecting rod 312, and the second screw is rotatably connected to the first screw. The first screw supports the guide cylinder 34. When asphalt is being measured, the first connecting rod 310 and the second connecting rod 312 can be swung to adjust the horizontal position of the test needle 36, and the third connecting rod 314 can be controlled to slide on the guide threaded rod 2 to adjust the height of the test needle 36, that is, the distance between the test needle 36 and the test box 45. The guide threaded rod 2 is provided with a support plate 22 that cooperates with the base 1. The support plate 22 serves to support the guide threaded rod 2.

[0043] As a further embodiment provided by this utility model, the second link 312 is provided with a lever 311 that cooperates with the first link 310, and the third link 314 is provided with a locking member 315 that cooperates with the second link 312. By swinging the lever 311, the second link 312 and the third link 314 can be locked. Similarly, by rotating the locking member 315, the third link 314 and the second link 312 can be locked.

[0044] As a further embodiment of this utility model, a guide groove 21 is provided on the guide thread rod 2, and the third connecting rod 314 slides within the guide groove 21. The guide groove 21 serves as a guide, allowing the third connecting rod 314 to slide only upwards or downwards along the guide thread rod 2.

[0045] As a further embodiment of this utility model, a heating plate 46 is provided at the bottom of the constant temperature chamber 4, a top plate 461 is provided on the heating plate 46, a heating wire 47 is provided between the top plate 461 and the heating plate 46, and a conical protrusion 15 is provided on the base 1. The conical protrusion 15 cooperates with the heating plate 46, and the conical protrusion 15 improves the connection effect between the base 1 and the heating plate 46 and improves the fit between the two. The water temperature in the constant temperature chamber 4 is always maintained at 25°C by the heating wire 47 on the heating plate 46.

[0046] As a further embodiment of this utility model, a connector 12 that cooperates with the heating wire 47 is provided on the conical protrusion 15. A temperature measuring rod 11 is provided on one side of the connector 12. The connector 12 is used for electrical connection between the base 1 and the heating wire 47 so as to control the heating temperature of the heating wire 47 through the base 1. At the same time, the temperature measuring rod 11 can monitor the water temperature in the constant temperature chamber 4 in real time.

[0047] As a further embodiment of this utility model, the heating plate 46 is provided with symmetrical grooves 462, which have arc-shaped surfaces to facilitate manual lifting of the thermostat 4 to pour out the solution inside.

[0048] Working principle: First, the heated asphalt is poured into the test box 45 and cooled to a suitable temperature. Then, it is placed in a constant temperature chamber 4 at 25°C, so that the test box 45 is immersed in warm water between the auxiliary support 41 and the adjusting seat 43. The four guide blocks 414 are slid into the slide groove 413 and fixed in a suitable position. The first connecting rod 310 and the second connecting rod 312 are swung to align the test needle 36 with the center hole of the guide block 414. The knob 313 is rotated to make the test needle 36 contact the asphalt. Then, the cylinder 32 is controlled to output, so that the test needle 36 is pushed axially downward for 5 seconds through the telescopic rod 35. The jump of the dial gauge 33 pointer is observed and the value is recorded. Then, the cylinder 32 is extended, and the first connecting rod 310 and the second connecting rod 312 are controlled to move the test needle 36 to the center hole of the second guide block 414 for needle insertion test. After multiple tests, the asphalt is judged to be qualified by comparing the data.

[0049] The above-described technical solution of this utility model addresses the problem that existing technical solutions are too simplistic and provides a solution that is significantly different from existing technologies. The parts not covered in this application's technical solution are the same as or can be implemented using existing technologies, and will not be described in detail here.

[0050] The technical solutions in the above embodiments have clearly and completely described the content of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

Claims

1. A device for measuring the penetration of asphalt, characterized in that, include: A base, on which a guide threaded rod is provided; A test unit is disposed on the guide threaded rod, and the test unit includes a test pin; A constant temperature chamber, wherein the constant temperature chamber has a constant temperature cavity, a support base is provided at the center of the constant temperature cavity, an adjustment base is provided on the support base, a support rod is provided on the adjustment base, an auxiliary bracket is provided on the support rod, and a guide block that cooperates with the test probe is slidably provided on the auxiliary bracket; The test box is disposed between the auxiliary support and the adjustment base and cooperates with the test probe.

2. The asphalt penetration measuring device according to claim 1, characterized in that, The auxiliary support is provided with a sliding groove, and a scale line is provided on one side of the sliding groove. The guide block cooperates with the sliding groove.

3. The asphalt penetration measuring device according to claim 1, characterized in that, The testing unit also includes a dial indicator, a cylinder, a swing arm, and a guide cylinder mounted on the swing arm. A telescopic rod is slidably mounted inside the guide cylinder. One end of the telescopic rod engages with the test needle, while the other end contacts the dial indicator. The dial indicator is mounted on the guide cylinder, and the swing arm cooperates with the guide threaded rod. The cylinder is located on one side of the guide cylinder, and the output end of the cylinder is provided with a connecting plate that cooperates with the telescopic rod.

4. The asphalt penetration measuring device according to claim 3, characterized in that, A top cover is threaded onto the telescopic rod, and a conical locking block is provided between the top cover and the telescopic rod. The test probe is locked at the axis of the conical locking block.

5. The asphalt penetration measuring device according to claim 3, characterized in that, The swing arm includes a first link, a second link, and a third link slidably connected to the guide threaded rod. The third link is provided with a knob that cooperates with the guide threaded rod. The third connecting rod is rotatably connected to the second connecting rod, the second screw is rotatably connected to the first screw, and the first screw supports the guide cylinder.

6. The asphalt penetration measuring device according to claim 5, characterized in that, The second link is provided with a lever that cooperates with the first link, while the third link is provided with a locking element that cooperates with the second link.

7. The asphalt penetration measuring device according to claim 5, characterized in that, The guide threaded rod has a guide groove, and the third connecting rod slides within the guide groove.

8. The asphalt penetration measuring device according to claim 1, characterized in that, The bottom of the constant temperature chamber is provided with a heating plate, the heating plate is provided with a top plate, and a heating wire is provided between the top plate and the heating plate; The base is provided with a conical protrusion, which cooperates with the heating plate.

9. The asphalt penetration measuring device according to claim 8, characterized in that, The conical protrusion is provided with a connector that mates with the heating wire, and a temperature measuring rod is provided on one side of the connector.

10. The asphalt penetration measuring device according to claim 8, characterized in that, The heating plate has symmetrically arranged grooves.

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