Comprehensive measuring instrument for asphalt penetration and softening point

Abstract

The utility model discloses a comprehensive measuring instrument for asphalt penetration and softening point. The comprehensive measuring instrument comprises a box body, a fixing frame is arranged between two opposite side walls in the box body, supporting frames are arranged on the fixing frame, an automatic lifting table is arranged on the fixing frame between the supporting frames, a needle connecting rod is arranged below the automatic lifting table, and the bottom of the needle connecting rod is connected with a test needle; a tripod is arranged on the support frame; an operating rod is further arranged on the fixing frame, an upper plate is arranged in the middle of the operating rod, test holes are formed in the two ends of the upper plate, protective rings are arranged on the test holes, and a lower plate is arranged under the upper plate and at the lower end of the operating rod; a cavity is formed in the side wall of the box body, and an infrared light receiver, an infrared light emitter and a heat conduction plate are arranged in the cavity. According to the utility model, continuous and efficient detection of needle penetration and softening point experiments can be realized, the experiment period is remarkably shortened, the detection efficiency is improved, errors caused by temperature fluctuation are reduced, and the accuracy and reliability of data are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to bitumen performance test technical field, concretely relates to a comprehensive measuring instrument of bitumen penetration and softening point. BACKGROUND

[0002] Bituminous material is a mixture composed of extremely complex high molecular hydrocarbons and nonmetallic derivatives of these hydrocarbons, and is mainly divided into natural bitumen, petroleum pitch and tar pitch. As an organic cementing material, bitumen has good cohesiveness, plasticity, waterproofness and corrosion resistance, and is widely used in many fields such as transportation. Penetration, softening point and ductility are three important indexes of bitumen inspection. Among them, penetration is an index indicating the softness of bitumen, the ability to resist shear failure and reflecting the relative viscosity of bitumen under certain conditions. The softening point is an index representing the temperature stability of bitumen. Bitumen penetration is generally determined by bitumen penetration instrument. According to "Highway Engineering Bitumen and Bituminous Mixture Test Regulations" (JTG E20-2011), bitumen softening point is generally determined by ring ball method softening point instrument.

[0003] Specifically, penetration experiment, as a means to measure the viscosity or consistency of bitumen, requires the experiment to be carried out under standard room temperature conditions to ensure the stability and comparability of the test results. The softening point experiment, on the other hand, is to observe the temperature point at which bitumen changes from solid to liquid to evaluate its thermal stability and performance at high temperature. This experimental process needs to gradually heat from a lower temperature to the complete softening of bitumen. It is worth noting that there is a certain overlap between the temperature control requirements of the two experiments, that is, both of them will experience similar temperature ranges during the heating process, but their purposes and focuses are completely different.

[0004] In the traditional detection method, separate testing of each index not only consumes time and effort, but also the experimental process is relatively complicated, which limits the improvement of detection efficiency and accuracy to some extent. The existing test technology is not efficient in resource utilization, and the experimental period is prolonged. Each time the experiment is converted, the temperature control system needs to be adjusted again, and the system needs to be stabilized to the specified condition, which not only increases the time cost of the experiment, but also may affect the accuracy and repeatability of the data due to temperature fluctuations. In addition, frequent conversion of experimental equipment and temperature adjustment may also accelerate the aging of the equipment and increase the maintenance cost.

[0005] Therefore, the utility model is proposed to solve the technical problems of long and tedious experimental process and low resource utilization efficiency in the traditional detection method, and to provide strong support for the progress of bituminous material scientific research and application technology. UTILITY MODEL CONTENT

[0006] The utility model discloses a comprehensive measuring instrument of asphalt penetration and softening point provides a kind of comprehensive measuring instrument of asphalt penetration and softening point, to solve the long time of asphalt performance test experiment and the problem of complicated operation process.

[0007] To achieve the above object, the utility model provides the following technical scheme:

[0008] The utility model provides a kind of comprehensive measuring instrument of asphalt penetration and softening point, including box and lid,

[0009] The fixed frame between the two opposite side walls in the box is provided with a support frame, and the fixed frame between the support frames is provided with an automatic lifting platform. A needle connecting rod is arranged below the automatic lifting platform. Weights are arranged on the side walls of the needle connecting rod. A test needle is connected to the bottom of the needle connecting rod. A tripod is arranged on the support frame. An operating lever is arranged on the fixed frame outside the support frame. A temperature sensor is arranged on the operating lever between the upper plate and the lower plate.

[0010] The side walls of the box are hollow cavities. An infrared light receiver and an infrared light emitter are arranged in the hollow cavities of the two side walls parallel to the fixed frame. Heat-conducting plates are arranged in the hollow cavities of the two side walls perpendicular to the fixed frame.

[0011] The infrared light receiver, the infrared light emitter, the heat-conducting plates, the automatic lifting platform, and the temperature sensor are all connected to a computer.

[0012] The comprehensive measuring instrument further includes a touch display screen, which is arranged on the top of the lid and connected to the computer through a data transmission line.

[0013] The emitting lamps in the infrared light emitter are arranged in vertical strips. A rectangular coordinate system is arranged in the infrared light receiver.

[0014] The support frame includes a bottom plate, which is arranged on the fixed frame through connecting rods on both sides. The tripod is arranged on the bottom plate.

[0015] The bottom of the side wall of the box is provided with a water inlet and a drain.

[0016] The bottom of the box is a hollow cavity. A magnetic stirrer is arranged in the hollow cavity. A stirring rod is arranged at the bottom of the box.

[0017] Stirring rods are arranged below the support frame and the lower plate.

[0018] One side of the box and the lid is connected by hinging.

[0019] A groove is arranged on the lower plate directly below the test hole.

[0020] The infrared light transmitter is connected with the computer through an infrared light transmitter data transmission line; and the infrared light receiver is connected with the computer through an infrared light receiver data transmission line.

[0021] Compared with the prior art, the utility model has the beneficial effects that:

[0022] The comprehensive measuring instrument has overlapping parts in the experimental temperature curve during the penetration and softening point test process, the penetration and softening point test device of asphalt is integrated based on a support frame, continuous and efficient detection of penetration and softening point experiment is realized, the infrared light receiver and infrared light transmitter are arranged to monitor the experiment and provide the accuracy of experimental data, and the heat conduction plate is arranged to adjust the water temperature.

[0023] Further, the magnetic stirrer and stirring sub are arranged at the bottom of the box body, water temperature can be balanced, and the influence of water temperature difference on experimental results is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will be briefly introduced the drawings needed to be used in the embodiments, it should be understood, the following drawings only show some embodiments of the utility model, therefore should not be regarded as the limitation to the range, for the ordinary skilled person in the art, under the premise of not paying the creative labor, still can obtain other related drawings according to these drawings.

[0025] Figure 1 It is the internal structure view of the comprehensive measuring instrument of asphalt penetration and softening point of the utility model;

[0026] Figure 2 It is the side sectional view of the comprehensive measuring instrument of asphalt penetration and softening point of the utility model;

[0027] Figure 3 It is the main external view of the comprehensive measuring instrument of asphalt penetration and softening point of the utility model;

[0028] In the figure: 1. Touch display screen; 2. Infrared light receiver; 3. Infrared light emitter; 4. Magnetic stirrer; 5. Temperature sensor; 6. Temperature sensor data transmission line; 7. Computer; 8. Fixing frame; 9. Heat-conducting plate; 10. Stirring rod; 11. Support frame; 12. Automatic lifting platform; 13. Needle connecting rod; 14. Weight; 15. Test needle; 16. Tripod; 17. Operating rod; 18. Guard ring; 19. Test hole; 20. Lower plate; 21. Water inlet; 22. Drainage outlet; 23. Infrared light receiver data transmission line; 24. Infrared light emitter data transmission line; 25. Data transmission line. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings can be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of the present application.

[0031] It should be noted that: similar reference numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0032] In the description of the embodiments of the present application, it should be noted that if the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly used when the product of the present application is used, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second" and the like are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0033] In addition, if the term "horizontal" is used, it is not meant to require absolute horizontal, but can be slightly inclined. As "horizontal" merely means more horizontal than "vertical", it is not meant to require complete horizontal, but can be slightly inclined.

[0034] In the description of the embodiments of the utility model, it needs to be explained that, unless there is explicit provision and limitation, if the terms "arrange", "install", "connect", "connect" appear, it should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or indirectly connected through an intermediate medium, or it can be connected inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0035] The utility model will be described further in detail in combination with the drawings:

[0036] Figure 1 As shown in the utility model provides a comprehensive measuring instrument of asphalt penetration and softening point, including box and lid,

[0037] The fixed frame 8 between the two opposite side walls in the box is provided with a support frame 11, and the fixed frame 8 between the support frames 11 is provided with an automatic lifting platform 12, and the needle connecting rod 13 is arranged below the automatic lifting platform 12, the weight 14 is arranged on the side wall of the needle connecting rod 13, the test needle 15 is connected to the bottom of the needle connecting rod 13, and the automatic lifting platform 12 is used to adjust the height of the test needle 15, so that the test needle 15 moves freely up and down;The support frame 11 is provided with a tripod 16, and the tripod 16 is used to place the experimentally treated asphalt sample;The fixed frame 8 outside the support frame 11 is provided with an operating rod 17, the middle part of the operating rod 17 is provided with an upper plate, the two ends of the upper plate are provided with test holes 19, the test holes 19 are provided with protective rings 18, and the protective rings 18 can be used to fix the experimental steel balls;The lower end of the operating rod 17 is provided with a lower plate 20 below the upper plate;The temperature sensor 5 is arranged on the operating rod 17 between the upper plate and the lower plate 20, and the temperature sensor 5 is connected with the computer 7 through the temperature sensor data transmission line 6;

[0038] The side wall of the box is a cavity, and the cavities of the two side walls parallel to the fixed frame 8 are respectively provided with an infrared light receiver 2 and an infrared light emitter 3, the infrared light emitter 3 is connected with the computer 7 through the infrared light emitter data transmission line data 24, and the infrared light receiver 2 is connected with the computer 7 through the infrared light receiver data transmission line 23. The infrared light emitter 3 and the infrared light receiver 2 are used to emit and receive infrared signals to judge the degree of experiment process and the measurement of experimental data in the box;The cavities of the two side walls perpendicular to the fixed frame 8 are provided with heat-conducting plates 9, and the heat-conducting plates 9 are connected with the computer 7 and can be used to control the water temperature in the box.

[0039] The box cover top is provided with a touch display screen 1, which is connected with the computer 7 through a data transmission line 25, and is used for displaying experimental data, touching and adjusting experimental mode and timing.

[0040] In some embodiments, the emitting lamps in the infrared light emitter 3 are arranged in vertical strips, and a rectangular coordinate system is arranged in the infrared light receiver 2.

[0041] In some embodiments, the support frame 11 comprises a bottom plate, the bottom plate is arranged on the fixing frame 8 through connecting rods on both sides, and the tripod 16 is arranged on the bottom plate.

[0042] In some embodiments, a groove is arranged on the lower plate 20 directly below the test hole 19.

[0043] In some embodiments, the bottom of the side wall of the box body is provided with a water inlet 21 and a drain outlet 22; the water inlet 21 is used for pouring required experimental water into the box body; and the drain outlet 22 is used for draining the experimental water in the box body.

[0044] In some embodiments, the bottom of the box body is a cavity, a magnetic stirrer 4 is arranged in the cavity, the stirring rod 10 is arranged on the bottom of the box body, the stirring rod 10 is arranged directly below the support frame 11 and the lower plate 20, and the magnetic stirrer 4 can rotate the stirring rod 10 in the box to make the water temperature uniform and reduce experimental errors caused by temperature conduction.

[0045] The working process of the comprehensive measuring instrument for asphalt penetration and softening point provided by the utility model is as follows:

[0046] Before the experiment, the device integrity is checked to ensure that there is no impurity in the box, the line connection is complete, the touch display screen 1 is used normally, the power supply is turned on, and sufficient water or glycerol is added in the water inlet 21.

[0047] The prepared penetration asphalt experimental sample is placed on the tripod 16, the softening point asphalt test sample is placed on the test hole 19, the steel ball is placed in the protective ring 18, the slow cooling mode is clicked on the touch display screen 1, and the final temperature is set to 5 degrees ± 0.5 degrees.

[0048] Click the start penetration experiment button on the touch display screen 1. When the temperature sensor 5 shows that the temperature reaches 25 degrees ± 0.5 degrees, the temperature in the box is kept at 25 degrees ± 0.5 degrees for 1.5 hours, and then the comprehensive measuring instrument starts the needle insertion reading. The infrared light emitter 3 emits infrared light once before and after the needle insertion reading, and the infrared receiver 2 is responsible for receiving the red light. If the red light cannot be received, it indicates that there is a needle connecting rod, a weight and a test needle blocking. The vertical stripe area in the infrared receiver 2 that does not receive the infrared light signal transmits information to the computer 7 in the form of coordinate data in the rectangular coordinate system. The computer 7 has a needle penetration calculation module embedded therein, which is obtained by using the existing method "a control circuit of a softening point test system". The corresponding graph is drawn in the rectangular coordinate system of the needle penetration calculation module. The displacement of the whole graph of the needle connecting rod, the weight and the test needle on the Y axis is formed by the graph of the two times of receiving the infrared light. The needle penetration experiment result can be obtained by measuring the length of the y axis displacement.

[0049] After the needle penetration experiment is completed, the comprehensive measuring instrument will continue to cool down. When the water temperature is displayed on the screen as 5 degrees ± 0.5 degrees, click the start softening point experiment button on the touch display screen 1. Keep the water bath at 5 degrees ± 0.5 degrees for 30 minutes. After the water bath is stopped, connect the heat conduction plate 9. The water temperature is raised at a rate of 5 degrees ± 0.5 degrees per minute until the falling asphalt contacts the lower plate 20 and the heating is stopped. During the heating process, the infrared emitter 3 continuously emits infrared light. The vertical stripe area in the infrared receiver 2 that does not receive the infrared light signal transmits information to the computer 7 in the form of coordinate data in the rectangular coordinate system. The computer 7 has a softening point calculation module embedded therein, which is obtained by using the existing method "a needle penetration tester for automatically measuring needle penetration". The corresponding graph is drawn in the rectangular coordinate system of the softening point calculation module. When there is data information from the vertical stripe of the corresponding test hole to the protective ring of the lower plate 20, it is proved that the asphalt has reached the bottom. The softening point calculation module measures the time to obtain the softening point experiment data result.

[0050] After the water in the box is cooled, the water in the box is discharged through the drain pipe 22, and the experimental instrument is cleaned to complete the experiment.

[0051] Usually, the data test of asphalt softening point and the data test of asphalt needle penetration need to be carried out twice. In this process, not only the asphalt mold needs water bath, but also the related devices required for the experiment need water bath cooling. The mold temperature changes during the process of taking out the mold after the mold water bath is completed and during the installation process, which causes errors. The comprehensive measuring instrument for asphalt needle penetration and softening point of the utility model combines the test of needle penetration and softening point into one, and tests the needle penetration and softening point through one temperature adjustment, which simplifies the operation process, shortens the experimental time, and improves the testing accuracy.

[0052] The above examples are only used to illustrate the technical solutions of the present application and not to limit them, and although the present application has been described in detail with reference to the above examples, the ordinary skilled in the art can still modify or equivalently replace the specific embodiments of the present application, and any modification or equivalent replacement of the present application without departing from the spirit and scope of the present application is within the protection scope of the claims of the present application.

Claims

1. A comprehensive measuring instrument for asphalt penetration and softening point, characterized in that, Including the box body and the lid, A fixed frame (8) is set between two opposite side walls inside the box. A support frame (11) is set on the fixed frame (8). An automatic lifting platform (12) is set on the fixed frame (8) between the support frames (11). A needle connecting rod (13) is set below the automatic lifting platform (12). A weight (14) is set on the side wall of the needle connecting rod (13). A test needle (15) is connected to the bottom of the needle connecting rod (13). A tripod (16) is set on the support frame (11). An operating rod (17) is set on the fixed frame (8) outside the support frame (11). An upper plate is set in the middle of the operating rod (17). Test holes (19) are set at both ends of the upper plate. A protective ring (18) is set on the test holes (19). A lower plate (20) is set at the lower end of the operating rod (17) directly below the upper plate. A temperature sensor (5) is set on the operating rod (17) between the upper plate and the lower plate (20). The side walls of the box are cavities. An infrared light receiver (2) and an infrared light emitter (3) are respectively installed in the cavities of the two side walls parallel to the fixing frame (8). A heat-conducting plate (9) is installed in the cavities of the two side walls perpendicular to the fixing frame (8). The infrared light receiver (2), infrared light emitter (3), heat conduction plate (9), automatic lifting platform (12) and temperature sensor (5) are all connected to the computer (7).

2. The comprehensive measuring instrument for asphalt penetration and softening point according to claim 1, characterized in that, The comprehensive measuring instrument also includes a touch screen (1), which is located on the top of the box cover and is connected to the computer (7) via a data transmission line (25).

3. The comprehensive measuring instrument for asphalt penetration and softening point according to claim 1, characterized in that, The infrared light emitters (3) have vertical strips of light, and the infrared light receiver (2) has a rectangular coordinate system.

4. The comprehensive measuring instrument for asphalt penetration and softening point according to claim 1, characterized in that, The support frame (11) includes a base plate, and the two sides of the base plate are mounted on the fixed frame (8) by connecting rods. The tripod (16) is mounted on the base plate.

5. The comprehensive measuring instrument for asphalt penetration and softening point according to claim 1, characterized in that, The bottom of the side wall of the tank is provided with a water inlet (21) and a drain outlet (22).

6. The comprehensive measuring instrument for asphalt penetration and softening point according to claim 1, characterized in that, The bottom of the box is a cavity, and a magnetic stirrer (4) is installed inside the cavity. A stir bar (10) is installed at the bottom of the box.

7. A comprehensive measuring instrument for asphalt penetration and softening point according to claim 6, characterized in that, A stir bar (10) is installed directly below the support frame (11) and the lower plate (20).

8. The comprehensive measuring instrument for asphalt penetration and softening point according to claim 1, characterized in that, The box body and the lid are connected by a hinge on one side.

9. The comprehensive measuring instrument for asphalt penetration and softening point according to claim 1, characterized in that, A groove is provided on the lower plate (20) directly below the test hole (19).

10. A comprehensive measuring instrument for asphalt penetration and softening point according to claim 1, characterized in that, The infrared light transmitter (3) is connected to the computer (7) via the infrared light transmitter data transmission line (24); the infrared light receiver (2) is connected to the computer (7) via the infrared light receiver data transmission line (23).

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