CN202066763U - Device for measuring asphalt breaking point - Google Patents

Abstract

The utility model discloses a device for measuring the brittle point of asphalt, which aims to provide a device for measuring the brittle point of asphalt with simple structure, easy operation and high precision. It includes a crisp point meter, a closed casing with a temperature control device, a temperature sensor, a pressure sensor, a shooting device and a PC. The temperature sensor, the pressure sensor and the photographing device are respectively connected to the brittle point meter and the PC, and can accurately measure the stiffness and brittle point of the asphalt.

Description

A device for measuring the brittle point of asphalt

technical field

The utility model relates to a measuring device, in particular to a device for measuring the brittle point of asphalt. the

Background technique

At present, the principle of the known brittle point meter for measuring the brittle point of asphalt is to place a certain amount of asphalt sample on a clean metal sheet in a closed casing, and make the asphalt spread evenly on the metal sheet to form a smooth film. , and then control the ambient temperature, bend the metal sheet with a fixed cycle, and observe whether there is any crack in the sample on the sheet, when the asphalt film coated on the metal sheet is cooled and bent under certain conditions, the temperature when cracks appear, This is the brittle point of asphalt. At present, most of the observations of asphalt film fractures are visual observations, and the experimental operators observe the appearance of asphalt film cracks through the experimental device. This measurement method is affected by the operator's human factors, and the error is large and the accuracy is low. Although some advanced instruments at home and abroad avoid the interference of human factors caused by manual visual inspection, they cannot count and analyze the data in real time, and cannot accurately measure the stiffness and brittle point of the sample asphalt. the

Utility model content

The utility model overcomes the deficiencies in the prior art and provides a device capable of accurately measuring the stiffness and brittle point of asphalt. the

In order to solve the above-mentioned technical problems, the utility model adopts the following technical scheme: a device for measuring the brittle point of asphalt, including a brittle point meter, which is placed in a closed casing, and the closed casing also includes a temperature sensor, a pressure sensor, a digitized shooting device capable of automatically and continuously photographing the asphalt film of the brittle point meter, a PC is arranged outside the closed casing, and one end of the temperature sensor and the pressure sensor are connected to the brittle point meter respectively. The other end is electrically connected to the PC, and the data output port of the digitized shooting device is electrically connected to the PC. the

Due to the adoption of the above technical scheme, a device for measuring the brittle point of asphalt provided by the utility model has such beneficial effects, the digital photographing device transmits the photographed images to the PC in real time, and the temperature sensor and the pressure sensor will correspond to it The temperature and pressure information are synchronously fed back to the PC. When the asphalt film breaks are observed on the PC, the temperature and pressure values at this time can be obtained at the same time, so that the stiffness and brittle point of the asphalt can be accurately measured. the

Further, in order to improve the automation level, the PC is also equipped with a program that can automatically identify the fracture phenomenon of the asphalt film in the image. In this way, the complete automation of the entire experiment can be realized. When the program detects a picture containing the fracture information of the asphalt film, an alarm will be issued through an external warning device and the loading and cooling will be terminated, reducing unnecessary experimental time. the

Description of drawings

Below in conjunction with accompanying drawing and specific embodiment, the utility model is described in further detail:

Fig. 1 is the principle flowchart of the present embodiment;

Figure 2 is a schematic diagram of the structure of the brittle point instrument. the

Detailed ways

As shown in Fig. 1 and Fig. 2, temperature sensor, pressure sensor, respectively one end is connected with brittle point instrument and the other end is connected with PC, digital camera or other digital photographing device is connected with PC, temperature sensor is connected with asphalt film 4, When the temperature of the asphalt film 4 changes, the temperature sensor transmits the received signal to the PC, the pressure sensor is connected to the metal sheet 3, and the micromotor 5 for applying pressure to the metal sheet is connected to the metal sheet support 2. When the micro-motor 5 that presses the sheet is working, it generates pressure on the metal sheet 3, so that the bitumen film 4 evenly distributed on the metal sheet 3 is deformed under pressure. At this time, the pressure sensor transmits the received signal to the PC. The photographing device digitally photographs the asphalt film 4 at intervals of 1 to 3 seconds while the asphalt film 4 is under pressure, and transmits the photographed images to the PC. The PC processes and analyzes the photographed image data, and The data transmitted by the temperature sensor and the pressure sensor are monitored in real time. When the asphalt film 4 is broken, the program set in the PC can record and store the data transmitted by the temperature sensor and the pressure sensor to the PC at this time, which can accurately Measure the stiffness and brittleness of asphalt. the

The above is only the preferred embodiment of the utility model, it should be pointed out that for those skilled in the art, without departing from the structure of the utility model, some deformations and improvements can also be made, and these should also be regarded as The protection scope of the utility model, these all can not affect the effect that the utility model implements and the practicability of the patent. the

Claims (1)

1. device of measuring asphalt breaking point, comprise the brittle point instrument, the brittle point instrument places closure casing, it is characterized in that, also comprise temperature sensor, pressure transducer in the described closure casing, can carry out automatically the digitizing filming apparatus of shooting continuously the asphalt film of described brittle point instrument, described closure casing is provided with PC outward, described temperature sensor and pressure transducer an end respectively are electrically connected with described brittle point instrument, the other end is electrically connected with described PC, and the data-out port of described digitizing filming apparatus is electrically connected with described PC.

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