CN217425109U - Pitch penetrometer with observation device - Google Patents

Abstract

The application discloses pitch penetrometer with observation device, which comprises a frame, install the income needle mechanism through the control of centre gripping platform in the frame, the frame bottom is provided with the base, the base upper surface is provided with the supporting platform who is used for placing the bathtub, still includes observation device, observation device is used for gathering the probe of the real-time image of the needle point position of the standard needle of installation on the income needle mechanism including fixed setting at the frame lateral wall, and with the display terminal that the influence picture that the probe was gathered is used for showing in real time to the probe electricity is connected. The utility model discloses an infrared distance measuring sensor carries out the range finding, can effectively guarantee the distance between sample surface and the standard needle point, and the stroke of the accurate measurement standard needle of digital display displacement sensor of reunion to can objectively effectual assurance standard needle point just with the laminating of pitch sample surface, it pierces or has the clearance not to avoid visual operation to appear the needle point, thereby introduces operation error.

Description

Pitch penetrometer with observation device

Technical Field

The utility model relates to a pitch material physical properties survey device technical field especially relates to pitch material penetrometer value measurement, specifically is a pitch penetrometer with observation device.

Background

Asphalt is one of the main manufacturing materials for paving road surfaces, and the paving asphalt road surfaces refer to various types of road surfaces paved by mixing mineral materials with asphalt materials for roads. The asphalt binder improves the capability of the paving aggregate to resist damage of traveling vehicles and natural factors to the pavement, and enables the pavement to be smooth, less in dust, impermeable and durable. Accordingly, asphalt pavement is one of the most widely used high-grade pavements in road construction.

Reasonably determining the structure of the asphalt pavement, wherein the cracks of the asphalt surface layer are mainly caused by the low-temperature shrinkage of the asphalt surface layer. Selecting high-quality asphalt with low-temperature stiffness, large ductility, poor temperature sensitivity and low wax content, carefully selecting mineral aggregate, accurately grading the mineral aggregate of the asphalt surface course and reasonably preparing the mixing proportion of the asphalt mixture. The asphalt mixture with excellent performance is prepared, the use amount of the asphalt is controlled, the excellent performance of the asphalt mixture is ensured, and the cracks can be effectively reduced. It can be seen that the quality of asphalt directly determines the performance of the road.

The properties of bitumen are typically tested according to the GB T4509-2010 bitumen penetration test. The penetration value is measured by a penetration meter, the penetration meter can be divided into a gravity penetration meter and a constant force automatic penetration meter according to different penetration modes, the principles are approximately the same, and the force applied to the end part of a standard needle is guaranteed to be a certain value so as to accurately measure the performance of the current asphalt.

However, because the asphalt samples to be tested have different types and need to be aligned before each test, the alignment work is necessary for the test and is also a place which is easy to cause operation errors, and therefore, the tip alignment of the standard needle is the key of the asphalt penetration measurement method. The existing penetration determination is always carried out by adopting manual visual alignment, and the alignment degree completely depends on the subjective experience of testers and visual calibration.

SUMMERY OF THE UTILITY MODEL

Adopt artifical visual alignment to exist error when carrying out pitch penetration survey test among the prior art big in order to solve, it is big to receive tester experience and visual judgement influence, the problem that the precision that leads to the test result does not have the uniformity, this application provides a pitch penetration appearance with observation device, the purpose is at the same sample quality, be used for reducing under the volume prerequisite and even overcome tester's subjective visual operation's experience influence test result, make when carrying out pitch penetration survey test, can utilize the penetration appearance to carry out the accuracy to the admission needle, promote the accuracy of standard needle point calibration.

The improved asphalt penetration meter provided by the applicant aims at accurately measuring the penetration value of asphalt, so that the shape of the asphalt is controlled from the source, the paved road surface reaches or even exceeds the preset pavement index, and the problems of pavement cracking, water leakage, cracks and the like caused by asphalt quality problems are avoided.

In order to achieve the purpose, the technical scheme adopted by the application is as follows:

the utility model provides an asphalt penetrometer with observation device, includes the frame, install the income needle mechanism through the control of centre gripping platform in the frame, the frame bottom is provided with the base, the base upper surface is provided with the supporting platform who is used for placing the bathtub, still includes observation device, observation device is including fixed setting up the probe that is used for gathering the real-time image of the needle point position of the standard needle of installing on the income needle mechanism at the frame lateral wall, and with the probe electricity is connected and is used for the display terminal of the influence picture that real-time display probe gathered.

Preferably, an infrared distance measuring sensor and an LED light supplement lamp which are electrically connected with the display terminal are installed at the position, close to the needle inserting mechanism, of the bottom of the clamping platform.

Preferably, the needle inserting mechanism comprises a standard needle for inserting a sample, a clamping head for installing and clamping the standard needle, a scale fixedly connected with the clamping head and capable of moving up and down along with the clamping head, and a digital display displacement sensor for displaying the moving distance of the scale in real time.

Preferably, the bottom of the water bath is provided with a heating wire for heating, the water bath is also internally provided with a temperature sensor, and the heating wire and the temperature sensor are both electrically connected with the display terminal.

Preferably, a support is placed at the bottom in the water bath tub, a sample containing box is placed on the support, and the sample containing box is made of metal.

Preferably, the display terminal comprises a central processing unit, a decoding unit electrically connected with the central processing unit, a display unit, an instruction input unit and a power supply unit; the decoding unit is electrically connected with a driving unit for controlling needle insertion and needle return of the needle inserting mechanism, the display unit is electrically connected with the probe through a central processing unit, and the instruction input unit is a keyboard which is arranged on a display terminal and used for inputting instructions.

Has the beneficial effects that:

the utility model discloses an infrared distance measuring sensor carries out the range finding, can effectively guarantee the distance between sample surface and the standard needle point, and the stroke of the accurate measurement standard needle of digital display displacement sensor of reunion to can objectively effectual assurance standard needle point just with the laminating of pitch sample surface, it pierces or has the clearance not to avoid visual operation to appear the needle point, thereby introduces operation error.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without inventive exercise.

Fig. 1 is a perspective view of the present invention.

Fig. 2 is another visual perspective isometric view of fig. 1.

Fig. 3 is a left side view of fig. 1.

Fig. 4 is a front view of fig. 1.

Fig. 5 is a schematic diagram of standard pin zeroing.

Wherein, 1-a frame; 2-a digital display displacement sensor; 3-a scale; 4-a probe; 5-a display terminal; 6, a clamping head; 7-standard needle; 8-water bath tub; 9-a scaffold; 10-sample containing box; 11-an infrared ranging sensor; 12-LED fill light.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. 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 application.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined or explained in subsequent figures.

In the description of the present application, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are used for indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship which is usually placed when the product of the application is used, the description is only for convenience and simplicity, and the indication or suggestion that the referred device or element must have a specific orientation, be constructed in a specific orientation and be operated, and thus, should not be construed as limiting the present application. Furthermore, the appearances of the terms "first," "second," and the like in the description herein are only used for distinguishing between descriptions and not necessarily for describing or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like when used in the description of the present application do not require that the components be absolutely horizontal or overhanging, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present application, it should also be noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" should be interpreted broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in this application will be understood to be a specific case for those of ordinary skill in the art.

Example 1:

the asphalt penetration tester with the observation device comprises a rack 1, wherein a needle inserting mechanism controlled by a clamping platform is installed on the rack 1, a base is arranged at the bottom of the rack 1, a supporting platform used for placing a water bath 8 is arranged on the upper surface of the base, the asphalt penetration tester also comprises the observation device, and the observation device comprises a probe 4 fixedly arranged on the side wall of the rack 1 and used for acquiring real-time images of the needle point position of a standard needle 7 installed on the needle inserting mechanism, and a display terminal 5 electrically connected with the probe 4 and used for displaying influence pictures acquired by the probe 4 in real time.

The structure and the working principle are as follows:

the rack 1 is used for supporting the whole needle gauge structure, is a bearing component and is used for installing and supporting the structures of the clamping platform, the needle inserting mechanism, the water bath tub 8, the display terminal 5 and the probe 4;

the clamping platform is connected with the frame 1 and used for installing the needle mechanism, and plays a role in supporting and aligning;

the needle entering mechanism is used for installing a standard needle 7 and can enable the standard needle 7 to reciprocate up and down in the vertical direction, and when the needle point of the standard needle 7 contacts the asphalt surface, the process of continuing to move down is a 'needle entering' process; when the standard needle 7 reaches a preset depth or a maximum depth reached within a specified time according to experimental requirements, the standard needle moves upwards until the standard needle 7 is separated from the asphalt surface, namely a 'needle return' process, and the standard needle is inserted. The needle insertion mechanism can record the moving distance of the needle insertion and needle return processes so as to facilitate reading.

The above process is the function of the present application and the prior art, and is also the function of any penetration meter, however, the improvement point of the present embodiment is that a probe 4 and a display terminal 5 are additionally provided, the probe 4 has a structure as shown in fig. 1, and has a rod support which can be bent freely according to the requirement, can be freely deformed and can keep the deformed state; therefore, no matter what position the standard needle 7 and the asphalt sample are in, the probe 4 can be aligned to the surface of the asphalt sample according to the current experimental requirements, then the probe 4 collects the position image between the standard needle 7 and the surface of the asphalt sample in a short distance and displays the position image through the display terminal 5 in real time, the operator realizes the short-distance observation effect which cannot be reached by eyes through the display terminal 5, and can realize the amplification of more than 10 times, namely, under the same distance, the observation precision of the penetrometer provided by the embodiment can be 10 times or more higher than that of the pure naked eye observation in the prior art, in addition, in the prior art, the distance observed by the pure naked eye at least comprises the shielding or inclined observation of the bathtub 8, and in any case, the effective observation distance is more than 10 times of the distance in the embodiment, and the embodiment is based on the difference of the focal lengths of the probe 4, generally, the distance between the probe 4 and the surface of the asphalt sample is controlled to be about 10mm, so that, by adopting the method of the present embodiment, the effective observation precision is improved by as much as ten times compared with the existing pure naked eye vision observation method, and the details are shown in the schematic diagram shown in fig. 4. Meanwhile, the moving distance of the needle entering process and the needle returning process and/or the time used by the needle entering process and/or the needle returning process can be displayed by the display terminal 5.

After the alignment of the needle tip of the standard needle 7 and the surface of the asphalt sample is finished, the needle tip and the asphalt sample are properly contacted but are not embedded into each other, at the moment, the needle entering mechanism is controlled by the display terminal 5 to start needle entering and timing at the same time, and the timing is sequentially carried out according to the current experiment requirements and steps until the purpose of the experiment is achieved. In particular, the experimental procedure should be carried out strictly according to the GB T4509-2010 asphalt penetration assay, which is a standard procedure and will not be described in detail herein.

Compared with the prior art, the contact precision of the needle point of the standard needle 7 and the surface of the asphalt sample is improved, the position errors between the needle point and the asphalt sample are eliminated, the position errors comprise the mutually embedded negative gap and the mutually separated positive gap, and therefore the obtained penetration value is the objective penetration value of the current asphalt sample, and the penetration value is more objective, trueness and accuracy compared with the prior art.

Example 2:

in this embodiment, a further improvement is performed on the basis of embodiment 1, and as shown in fig. 1 to fig. 4 in the description, in this embodiment, an infrared distance measuring sensor 11 and an LED light supplement lamp 12 electrically connected to the display terminal 5 are installed at a position close to the needle insertion mechanism at the bottom of the clamping platform. The effect of LED light filling lamp 12 lies in promoting the illuminance on pitch sample surface, does benefit to probe 4 and gathers and do benefit to follow-up observation, because LED light filling lamp 12 is vertical decurrent, utilizes the water in pitch sample surface or the bathtub 8 to carry out the diffuse reflection for sample pitch surface will be in all the time and have sufficient irradiant state, does benefit to the experimenter more and observes. More importantly, the infrared distance measuring sensor 11 can read the distance between the current asphalt sample surface and the bottom of the clamping platform, and since the installation length of the standard needle 7 is known, the distance H in the vertical direction from the needle point of the standard needle 7 to the asphalt sample surface in the initial state can be calculated, as shown in detail in fig. 5, the standard needle 7 moves downwards H by adjusting the needle entering mechanism, at this time, the gap is theoretically just eliminated, and the needle point of the standard needle 7 should just contact with the asphalt surface; however, in order to further ensure the accuracy, it is further confirmed whether or not the probe 4 and the display terminal 5 described in embodiment 1 are in an optimum contact state by manual observation. If the contact state is not optimal but not embedded after observation through the display terminal 5 due to objective reasons such as poor surface flatness of the asphalt sample, further visual adjustment can be performed until the optimal state is reached.

Still further, the needle inserting mechanism comprises a standard needle 7 for inserting a sample, a clamping head 6 for installing and clamping the standard needle 7, a scale 3 fixedly connected with the clamping head 6 and capable of moving up and down along with the clamping head 6, and a digital display displacement sensor 2 for displaying the moving distance of the scale 3 in real time. The scale 3 adopts current digital display linear scale, has the function of count, reset, zero clearing for when the needle point of standard needle 7 adjusted to just in time contact with the pitch surface, with the zero clearing of scale 3, thereby reach the purpose of accurate count.

In this embodiment, the bottom of the water bath 8 is provided with an electric heating wire for heating, the water bath 8 is further provided with a temperature sensor, and the electric heating wire and the temperature sensor are both electrically connected with the display terminal 5. Through the water heating of electric heat silk in to bathtub 8, temperature sensor carries out real-time temperature feedback, temperature in bathtub 8 remains throughout when predetermineeing the temperature, the interval 5 minutes difference in temperature is no longer than 1 ℃ after the demonstration experiment temperature environment and is reached, avoid among the prior art, utilize solitary heating device heating back, carry out the splendid attire with bathtub 8, lead to losing and losing in the experimentation heat, make the experiment temperature slightly less than predetermineeing the temperature, lead to the pitch sample needle penetration problem of experimental acquisition to be littleer.

In order to improve the thermal conductivity of the sample containing box 10 and keep the temperature of the asphalt sample at the preset experimental condition temperature as far as possible, a support 9 is placed at the bottom in the water bath 8, the sample containing box 10 is placed on the support 9, and the sample containing box 10 is made of metal.

Still further, in order to improve the intelligence of this embodiment, the display terminal 5 includes a central processing unit, a decoding unit electrically connected to the central processing unit, a display unit, an instruction input unit, and a power supply unit; the decoding unit is electrically connected with a driving unit for controlling needle insertion and needle return of the needle inserting mechanism, the display unit is electrically connected with the probe 4 through a central processing unit and used for displaying real-time image pictures, and the instruction input unit is a keyboard arranged on the display terminal 5 and used for inputting instructions. The keyboard comprises a startup and shutdown key, a temperature regulating case, a needle entering key for controlling a needle entering mechanism, a needle returning key, a timing option key and the like. The power supply unit is used for simultaneously supplying power to the display terminal 5 and the needle inserting mechanism.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (6)

1. The utility model provides an asphalt penetrometer with observation device, includes frame (1), install the income needle mechanism through the control of centre gripping platform in frame (1), frame (1) bottom is provided with the base, the base upper surface is provided with the supporting platform who is used for placing bathtub (8), its characterized in that: the device is characterized by further comprising an observation device, wherein the observation device comprises a probe (4) fixedly arranged on the side wall of the rack (1) and used for acquiring real-time images of the needle point position of a standard needle (7) installed on the needle inserting mechanism, and a display terminal (5) electrically connected with the probe (4) and used for displaying the influence pictures acquired by the probe (4) in real time.

2. The asphalt penetrometer with observation device of claim 1, characterized in that: and an infrared distance measuring sensor (11) and an LED light supplement lamp (12) which are electrically connected with the display terminal (5) are arranged at the position, close to the needle entering mechanism, of the bottom of the clamping platform.

3. The asphalt penetrometer with observation device of claim 2, characterized in that: go into needle mechanism including standard needle (7) that are used for interlude sample for the centre gripping head (6) of installation and centre gripping standard needle (7), with centre gripping head (6) fixed connection and along with scale (3) that centre gripping head (6) go up and down to move simultaneously to and be used for showing digital display displacement sensor (2) that scale (3) removed the distance in real time.

4. The asphalt penetrometer with observation device of claim 3, characterized in that: the heating wire that is used for the heating is provided with in bathtub (8) bottom, still is provided with temperature sensor in bathtub (8), heating wire and temperature sensor all with display terminal (5) electricity is connected.

5. The asphalt penetrometer with observation device of claim 3, characterized in that: a support (9) is placed at the bottom in the water bathtub (8), a sample containing box (10) is placed on the support (9), and the sample containing box (10) is made of metal.

6. The asphalt penetrometer with observation device of claim 5, wherein: the display terminal (5) comprises a central processing unit, a decoding unit electrically connected with the central processing unit, a display unit, an instruction input unit and a power supply unit; the decoding unit is electrically connected with a driving unit for controlling needle inserting and needle returning of the needle inserting mechanism, the display unit is electrically connected with the probe (4) through a central processing unit, and the instruction input unit is a keyboard which is arranged on a display terminal (5) and used for inputting instructions.

Images