Extension tester

Abstract

The utility model provides an extensibility tester which is used for testing the tensile degree of an asphalt sample, the extensibility tester comprises a tensile component and a control component, the tensile component comprises an elastic piece and two oppositely arranged clamping parts, and the two clamping parts can slide along the length direction of the extensibility tester; the two clamping parts are used for clamping the two ends of an asphalt sample respectively to stretch the asphalt sample, and the elastic piece is arranged between the two clamping parts and used for providing elastic force for relative movement between the two clamping parts; the control assembly is electrically connected with the stretching assembly. The elastic piece can provide continuous elastic force, automatically adjust and compensate tiny displacement errors, the situation that the asphalt sample is stressed unevenly or suddenly fractured in the stretching process to cause sudden change of force, and consequently the measurement precision is affected is reduced, the control assembly is electrically connected with the stretching assembly, the stretching process can be monitored and controlled in real time, and the measurement precision is improved. The stretching speed and the stretching force are adjusted, so that the automation and the accuracy of the testing process are realized.

Description

Technical Field

[0001] The utility model relates to the technical field of elongation measuring instruments, in particular to an elongation measuring instrument. Background Art

[0002] Asphalt, as an important building material, is widely used in road paving, waterproofing projects and other fields. The elongation of asphalt is one of the important indicators for evaluating its low-temperature performance and is of great significance for ensuring project quality. However, in the existing technology, due to factors such as the manufacturing tolerance of mechanical components, temperature changes, and drift of load sensors, for example, the performance of electronic components may change with temperature. Asphalt samples are easily subjected to uneven force or sudden changes in force during the stretching process. Existing elongation measuring instruments have insufficient measurement accuracy and stability in such environments and cannot meet the needs of high-precision measurement. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide an elongation measuring instrument in order to overcome the defect of insufficient accuracy in measuring the elongation of asphalt in the prior art.

[0004] The utility model solves the above technical problems through the following technical solutions:

[0005] An elongation meter is used to measure the degree of stretching of an asphalt sample. The elongation meter includes a stretching assembly and a control assembly. The stretching assembly includes an elastic member and two oppositely arranged clamping parts. The two clamping parts can slide along the length direction of the elongation meter. The two clamping parts respectively clamp the two ends of the asphalt sample to stretch the asphalt sample. The elastic member is arranged between the two clamping parts to provide elastic force for the relative movement between the two clamping parts; the control assembly is electrically connected to the stretching assembly.

[0006] In this solution, an elastic member is disposed between the two clamping parts, providing a continuous elastic force. The elastic member can automatically adjust and compensate for minute displacement errors, reducing the occurrence of uneven force or sudden breakage of the asphalt specimen during the stretching process, which can affect measurement accuracy. When the asphalt specimen breaks, the elastic member absorbs and buffers the instantaneous impact and vibration, protecting the stretching device and sensor, extending the service life of the equipment, and can also help the stretching assembly automatically reset to its initial state after the test is completed or the specimen breaks, facilitating the rapid execution of the next test, reducing manual operation, and improving test efficiency. The control assembly is electrically connected to the stretching assembly and can monitor and control the stretching process in real time, including the adjustment of the stretching speed and stretching force, thus achieving automation and accuracy in the test process.

[0007] Preferably, the stretching assembly also includes a guide part and a driving part, the clamping part includes a connecting piece, the guide part is arranged in the shell of the elongation measuring instrument and extends along the length direction of the shell; the other side of the connecting piece is slidably connected to the guide part, and the driving part is used to drive the connecting piece to slide relative to the guide part.

[0008] In this solution, the driving part is used to drive the connecting part to slide relative to the guide part. By controlling the driving part, the movement speed and distance of the clamping part can be accurately controlled to achieve precise stretching of the asphalt sample.

[0009] Preferably, the guide portion includes a track, a slide groove is provided at the bottom of the connecting piece, the slide groove is sleeved on the track to limit the movement of the clamping portion along the length direction of the track, and both ends of the elastic piece are respectively connected to the connecting piece.

[0010] In this solution, the guide provides a fixed path for the clamping unit to move along the track during stretching, preventing lateral displacement or twisting. This improves the stability of the motion path and facilitates measurement accuracy. A slideway is mounted on the track, enabling the connector to slide along the track. The elastic member acts directly on the connector, providing elastic force to absorb and cushion the impact of the specimen during stretching or fracture, thereby enhancing the accuracy and reliability of asphalt specimen tensile tests.

[0011] Preferably, the clamping portion further comprises a clamp connected to the top of the connecting member for clamping the asphalt sample.

[0012] In this solution, the asphalt sample is held firmly in place by a fixture during the tensile process. The fixture is attached to a connector, allowing it to move along a precise path, avoiding lateral displacement or deflection and improving measurement accuracy.

[0013] Preferably, the elongation measuring instrument further includes a temperature control component, which is disposed in the housing of the elongation measuring instrument to control the temperature in the housing, and is electrically connected to the control component.

[0014] In this solution, the temperature control component is electrically connected to the control component and can be monitored and adjusted in real time through the control system. The temperature control component improves the stability of the internal ambient temperature of the elongation tester, adjusts the temperature according to the test requirements, and adapts to the test requirements of different samples under different temperature conditions. It reduces data errors caused by temperature fluctuations, expands the scope of application of the instrument, and improves data reliability.

[0015] Preferably, the temperature control component includes a cooler, a refrigerator and a temperature sensor arranged at intervals. The cooler and the refrigerator are used to control the temperature inside the shell, and the temperature sensor is used to detect the temperature data inside the shell. The temperature sensor and the refrigerator are respectively arranged on opposite sides of the clamping part.

[0016] In this solution, a cooler and refrigerator work together to regulate the temperature within the shell, keeping the asphalt specimen within the test temperature range. A temperature sensor monitors the shell's temperature in real time, responding promptly to temperature changes so that the control system can adjust the experimental temperature to maintain stability. Testing in a stable temperature environment reduces data fluctuations caused by temperature changes and improves data reliability.

[0017] Preferably, the elongation measuring instrument further comprises a measuring component, which is arranged below the stretching component along the height direction of the elongation measuring instrument, and is electrically connected to the control component.

[0018] In this solution, the measuring component is arranged below the tensile component, which is convenient for real-time monitoring of the displacement and stress of the asphalt sample. The measurement data is more accurate and is transmitted to the control component.

[0019] Preferably, the measuring assembly includes a displacement sensor and a force sensor, the displacement sensor is used to monitor the displacement length of the tensile assembly, and the force sensor is used to monitor the tensile force exerted on the asphalt sample;

[0020] At least two displacement sensors and force sensors are provided, and at least one displacement sensor and one force sensor are provided below one clamping portion.

[0021] In this solution, two displacement sensors, each positioned below the two clamping parts, monitor the displacement of the asphalt specimen during stretching in real time, providing accurate data feedback. Two force sensors, each positioned below the two clamping parts, monitor the tensile force exerted on the asphalt specimen in real time, providing precise force data. This multi-point monitoring provides more accurate and comprehensive displacement and force data. The multiple sensors can be calibrated and compensated for each other, minimizing errors.

[0022] Preferably, the elongation tester further comprises a motor and a plurality of connecting wires, and the motor is connected to the control component, the stretching component and the temperature control component via the connecting wires.

[0023] In this solution, motors drive the tensile components for precise stretching, while connecting cables transmit power and control signals, enabling coordinated operation between the components. The elongation tester further enhances automation, precise control, and consistency, improving testing efficiency and accuracy through real-time monitoring, feedback, and enhanced test environment control.

[0024] Preferably, the elongation measuring instrument is further provided with a vent and a cover plate, the cover plate is covered on the housing of the elongation measuring instrument, a handle is provided on the side of the cover plate facing away from the housing, and the vent is provided on the side wall of the housing.

[0025] In this solution, the vents are used for air circulation inside the housing to maintain the stability of the internal temperature and environment. The cover protects the internal components of the housing to prevent dust and foreign matter from entering. The handle is provided to facilitate the opening and closing operation of the cover.

[0026] The positive progress effect of this utility model is:

[0027] The elastic member is positioned between the two clamping parts, providing a continuous elastic force. It can automatically adjust and compensate for minute displacement errors, reducing the impact of uneven force on the asphalt specimen or sudden breakage during stretching, which can affect measurement accuracy. When the asphalt specimen breaks, the elastic member absorbs and cushions the instantaneous impact and vibration, protecting the stretching device and sensor and extending the life of the equipment. It also helps the stretching assembly automatically reset to its initial state after the test is completed or the specimen breaks, facilitating the next test, reducing manual operation, and improving test efficiency. The control assembly is electrically connected to the stretching assembly and can monitor and control the stretching process in real time, including adjusting the stretching speed and force, thus achieving automation and accuracy in the test process. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A top view of an asphalt elongation tester according to an embodiment of the present invention;

[0029] Figure 2 This is a schematic diagram of the internal structure of an asphalt elongation tester in one embodiment of the present utility model.

[0030] Description of Reference Numerals

[0031] 1 Stretch component

[0032] 2 tracks

[0033] 3. Fixture

[0034] 4. First motor connection cable

[0035] 5. Motor

[0036] 6. Second motor connection cable;

[0037] 7 Cooling machine

[0038] 8. Refrigerator

[0039] 9 Ventilation holes

[0040] 10 Temperature sensor

[0041] 11 handle

[0042] 12 elastic parts

[0043] 13 First control component connection line

[0044] 14 Second control unit connection cable

[0045] 15 Measurement components

[0046] 16 Third control component connection line

[0047] 17 Control Components DETAILED DESCRIPTION

[0048] A preferred embodiment is given below, and the present invention is described more clearly and completely in conjunction with the accompanying drawings.

[0049] like Figure 1-2 As shown, in this embodiment, an elongation meter is provided for measuring the degree of stretching of an asphalt sample. The elongation meter includes a stretching assembly 1 and a control assembly 17. The stretching assembly 1 includes an elastic member 12 and two oppositely arranged clamping parts. The two clamping parts can slide along the length direction of the elongation meter. The two clamping parts respectively clamp the two ends of the asphalt sample to stretch the asphalt sample. The elastic member 12 is arranged between the two clamping parts to provide elastic force for the relative movement between the two clamping parts. The control assembly 17 is electrically connected to the stretching assembly 1.

[0050] In this embodiment, the elastic member 12 is configured as a spring, and the spring is disposed between the two clamping parts to provide a continuous elastic force. The elastic member 12 can automatically adjust and compensate for small displacement errors, reducing the uneven force or sudden break of the asphalt sample during the stretching process, which causes a sudden change in force and thus affects the measurement accuracy. When the asphalt sample breaks, the elastic member 12 absorbs and buffers the instantaneous impact force and vibration, protects the stretching device and sensor, and extends the service life of the equipment. It can also help the stretching component 1 to automatically reset and return to its initial state after the test is completed or the sample breaks, facilitating the next test to be carried out quickly, reducing manual operation, and improving test efficiency. The stretching component 1 adopts a high-precision drive mechanism, which can achieve a smooth and uniform stretching process. The control component 17 has a powerful data processing capability, which can automatically record, analyze and store measurement data, thereby improving test efficiency. The control component 17 is electrically connected to the stretching component 1, such as Figure 1 As shown, the control assembly 17 is connected to the stretching assembly 1 and the temperature sensor 10 via a first control assembly 17 connection line 13, a second control assembly 17 connection line 14, and a third control assembly 17 connection line 16. This allows for real-time monitoring and control of the stretching process, including adjustment of the stretching speed and force, thereby achieving automation and accuracy in the testing process. In some embodiments, the elastic member 12 may also be made of a material such as rubber or polyurethane elastomer that provides stable elastic force and excellent anti-aging properties.

[0051] In this embodiment, the stretching assembly 1 also includes a guide and a drive. The clamping portion includes a connector. The guide is located within the housing of the elongation tester and extends along the length of the housing. The other side of the connector is slidably connected to the guide, and the drive is used to drive the connector to slide relative to the guide. The drive can be an electric motor, hydraulic device, or other type of drive. By controlling the drive, the speed and distance of the clamping portion can be precisely controlled, achieving precise stretching of the asphalt sample.

[0052] Specifically, if Figure 1 As shown, in this embodiment, the guide portion includes a track 2, and the clamping portion includes a clamp 3. The clamp 3 is connected to the top of the connector to clamp the asphalt sample. The connector can be configured as a flat plate structure located between the clamping portion and the guide rail. A slide groove is provided at the bottom of the connector. The slide groove is mounted on the track 2 to limit the movement of the clamping portion along the length of the track 2. The two ends of the elastic member 12 are respectively connected to the connector. The track 2 provides a fixed path for the movement of the clamp 3, allowing the clamping portion to move along the track 2 during the stretching process, avoiding lateral displacement or distortion, improving the stability of the movement path, and facilitating improved measurement accuracy. The slide groove is mounted on the track 2 to enable the connector to slide along the track 2. The elastic member 12 acts directly on the connector, providing elastic force for the connector moving along the track 2 to absorb and buffer the impact force generated by the sample during the stretching process or when it breaks, thereby improving the accuracy and reliability of the asphalt sample tensile strength measurement.

[0053] The elongation meter also includes a temperature control assembly, which is disposed within the housing of the elongation meter and is used to control the temperature within the housing. The temperature control assembly is electrically connected to a control assembly 17. Specifically, in this embodiment, the temperature control assembly includes a cooler 7, a refrigerator 8, and a temperature sensor 10, which are spaced apart. The cooler 7 and refrigerator 8 are used to control the temperature within the housing, and the temperature sensor 10 is used to detect temperature data within the housing. The temperature sensor 10 and refrigerator 8 are respectively disposed on opposite sides of the clamping portion. The temperature control assembly is electrically connected to the control assembly 17 and can be monitored and adjusted in real time by a control system. The temperature control assembly improves the stability of the internal ambient temperature of the elongation meter, adjusts the temperature according to test requirements, and adapts to the testing requirements of different specimens under different temperature conditions. This reduces data errors caused by temperature fluctuations, expands the scope of application of the instrument, and improves data reliability.

[0054] The cooler 7 and refrigerator 8 cooperate to regulate the temperature within the housing so that the asphalt sample is within the test temperature range. The temperature sensor 10 is used to detect the temperature data within the housing in real time and promptly respond to temperature changes so that the control system can adjust the experimental temperature in a timely manner to maintain temperature stability. Testing in a stable temperature environment reduces data fluctuations caused by temperature changes and improves data reliability. In this embodiment, the cooler 7 and refrigerator 8 can create a low-temperature environment to conduct elongation tests on asphalt samples under low-temperature conditions. The temperature sensor 10 can monitor and reflect in real time the temperature during the test to ensure that it is stably controlled within the required low-temperature range.

[0055] like Figure 1-2 As shown, the extensometer further includes a measuring assembly 15, which is positioned below the tensile assembly 1 along the height direction of the extensometer and is electrically connected to a control assembly 17. Specifically, the measuring assembly 15 includes a displacement sensor and a force sensor. The displacement sensor is used to monitor the displacement length of the tensile assembly 1, and the force sensor is used to monitor the tensile force applied to the asphalt specimen. At least two displacement sensors and force sensors are provided, with at least one displacement sensor and one force sensor positioned below each clamping portion.

[0056] In this embodiment, two displacement sensors, positioned below the two clamping sections, monitor the displacement of the asphalt specimen in real time during stretching, providing accurate data feedback. Two force sensors, also positioned below the two clamping sections, monitor the tensile force exerted on the asphalt specimen in real time, providing precise force data. This multi-point monitoring provides more accurate and comprehensive displacement and force data. The multiple sensors can be calibrated and compensated for each other, minimizing errors.

[0057] like Figure 1 As shown, the elongation meter also includes a motor 5 and several connecting wires, and the motor 5 is connected to the control component 17, the stretching component 1 and the temperature control component through the connecting wires. In this solution, the motor 5 is used to drive the stretching component 1 to perform precise stretching operations, and the connecting wires are used to transmit power and control signals to achieve coordinated work between the various components. The elongation meter further improves the degree of automation, precise control and consistency, and improves test efficiency and accuracy through real-time monitoring, feedback and enhanced test environment control. The overall elongation meter is driven by a motor 5, and power is transmitted to the cooler 7, refrigerator 8, the stretching component 1 and the control component 17 through the first motor 5 connecting wire 4 and the second motor 5 connecting wire 6.

[0058] like Figure 2As shown, the extensometer is also equipped with a vent 9 and a cover. The cover is mounted on the housing of the extensometer. A handle 11 is provided on the side of the cover facing away from the housing. The vent 9 is located on the side wall of the housing. The vent 9 allows air to circulate inside the housing, maintaining a stable internal temperature and environment. The cover protects the internal components of the housing from dust and foreign matter. The handle 11 facilitates opening and closing the cover.

[0059] During use, the asphalt sample is first clamped in the clamp 3 of the tensile assembly 1. The target temperature of the temperature control assembly is set via the control assembly 17 to create the desired low-temperature environment. When the temperature reaches the set value, the control assembly 17 activates the tensile assembly 1 to stretch the asphalt sample. During the stretching process, the measurement assembly 15 monitors the tensile displacement and tensile force of the sample in real time and transmits the data to the control assembly 17 for processing. By comparing the elongation data of different asphalt samples under the same low-temperature conditions, their low-temperature performance can be accurately assessed.

[0060] Although specific embodiments of the present invention have been described above, those skilled in the art will appreciate that these are merely illustrative and that the scope of protection of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, and such changes and modifications are intended to fall within the scope of protection of the present invention.

Claims

1. An elongation tester for measuring the tensile strength of an asphalt sample, characterized in that: The elongation measuring instrument includes a stretching assembly and a control assembly. The stretching assembly includes an elastic member and two oppositely arranged clamping parts. The two clamping parts can slide along the length direction of the elongation measuring instrument. The two clamping parts respectively clamp the two ends of the asphalt sample to stretch the asphalt sample. The elastic member is arranged between the two clamping parts to provide elastic force for the relative movement between the two clamping parts; the control assembly is electrically connected to the stretching assembly.

2. The elongation tester according to claim 1, wherein: The stretching assembly also includes a guide part and a driving part. The clamping part includes a connecting piece. The guide part is arranged in the shell of the elongation measuring instrument and extends along the length direction of the shell. The other side of the connecting piece is slidably connected to the guide part, and the driving part is used to drive the connecting piece to slide relative to the guide part.

3. The elongation tester according to claim 2, wherein: The guide portion includes a track, a slide groove is provided at the bottom of the connecting member, the slide groove is sleeved on the track to limit the movement of the clamping portion along the length direction of the track, and both ends of the elastic member are respectively connected to the connecting member.

4. The elongation tester according to claim 2, wherein: The clamping portion further includes a clamp connected to the top of the connecting member for clamping the asphalt sample.

5. The elongation tester according to claim 3, wherein: The elongation measuring instrument further includes a temperature control component, which is disposed in a housing of the elongation measuring instrument for controlling the temperature in the housing, and is electrically connected to the control component.

6. The elongation measuring instrument according to claim 5, wherein: The temperature control component includes a cooler, a refrigerator and a temperature sensor arranged at intervals. The cooler and the refrigerator are used to control the temperature inside the shell, and the temperature sensor is used to detect the temperature data inside the shell. The temperature sensor and the refrigerator are respectively arranged on opposite sides of the clamping part.

7. The elongation measuring instrument according to claim 5, wherein: The elongation measuring instrument further includes a measuring component. Along the height direction of the elongation measuring instrument, the measuring component is arranged below the stretching component, and the measuring component is electrically connected to the control component.

8. The elongation measuring instrument according to claim 7, wherein: The measuring assembly includes a displacement sensor and a force sensor, wherein the displacement sensor is used to monitor the displacement length of the stretching assembly, and the force sensor is used to monitor the tension applied to the asphalt sample; At least two of the displacement sensors and the force sensors are provided, and at least one displacement sensor and one force sensor are provided below one of the clamping parts.

9. The elongation measuring instrument according to claim 7, wherein: The elongation tester further comprises a motor and a plurality of connecting wires, wherein the motor is connected to the control component, the stretching component and the temperature control component via the connecting wires.

10. The elongation tester according to claim 1, wherein: The elongation measuring instrument is further provided with a vent and a cover plate. The cover plate is covered on the shell of the elongation measuring instrument. A handle is provided on the side of the cover plate facing away from the shell. The vent is provided on the side wall of the shell.

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