Automatic measuring device for concrete anti-scouring test

Abstract

The utility model provides a concrete anti-scouring automatic measuring device which comprises a displacement control module, a measuring module, a container and a concrete fixing module, the container is used for containing liquid, the displacement control module is connected with the concrete fixing module, and the measuring module is connected with the displacement control module. The control module is connected with the concrete fixing module and used for controlling the concrete fixing module to enter or be separated from the liquid in the container, and the measuring module is connected with the container or the concrete fixing module and used for measuring the total mass of the container and the liquid in the container or measuring the mass of a concrete sample in the concrete fixing module. The device can accurately control the lifting rate, the dead time and on-time weighing of the concrete fixing module, human influence is avoided, and the test efficiency and accuracy are improved.

Description

Technical Field

[0001] This utility model belongs to the field of concrete testing technology, and specifically relates to an automatic testing device for concrete erosion resistance. Background Technology

[0002] With the increasing development of marine industries and underwater engineering construction, the use of concrete underwater (referred to as underwater concrete) is becoming more and more widespread. Underwater concrete is commonly used in bridges, tunnels, docks, offshore platforms, underwater pipelines, underwater oil storage tanks, and other projects. Among these, the erosion resistance of underwater concrete is a crucial indicator of its durability and safety. Erosion resistance testing of concrete is of great significance for assessing concrete durability. It can predict the long-term erosion resistance and durability of hydraulic dam structures by observing the wear and tear caused by erosion, playing a vital role in determining the service life of hydraulic concrete. Erosion resistance tests can evaluate the erosion resistance of concrete in underwater environments, ensuring that engineering structures are not damaged by erosion during long-term use.

[0003] Currently, commonly used testing methods for determining the erosion resistance of concrete involve manually immersing a container filled with concrete repeatedly in the water and timing the process. The erosion resistance is expressed by the weight loss per unit area of ​​the specimen after repeated erosion, essentially a mass loss measurement. While this provides a direct assessment of the concrete's erosion resistance, the manual immersion and timing method introduces significant human error, making it difficult to guarantee the consistency of the testing process and the accuracy of the results. Therefore, to reduce errors from manual testing and to meet relevant testing requirements, a more automated underwater concrete erosion resistance testing device is needed. Utility Model Content

[0004] In view of the above-mentioned deficiencies of the prior art, the purpose of this utility model is to provide an automatic testing device for concrete erosion resistance, so as to avoid the differences in the process of direct manual operation and ensure the accuracy of time and rate control.

[0005] This application provides an automatic testing device for concrete erosion resistance, including a displacement control module, a measurement module, a container, and a concrete fixing module; the container is used to hold liquid, the displacement control module is connected to the concrete fixing module and is used to control the concrete fixing module to enter or leave the liquid in the container, and the measurement module is connected to the container or the concrete fixing module and is used to measure the total mass of the container and the liquid in the container or to measure the mass of the concrete sample in the concrete fixing module.

[0006] Preferably, the displacement control module includes a frequency converter, a time relay, and a driver, wherein the frequency converter and the time relay are respectively connected to the driver, and the driver is connected to the concrete fixing module.

[0007] Preferably, the measuring module includes a weighing device and a timer, wherein the weighing device is connected to the timer.

[0008] Preferably, the driver includes a motor, a wheel, and a pull rope, the motor being connected to the wheel, and the wheel being connected to the concrete fixing module via the pull rope.

[0009] Preferably, it also includes a position sensor connected to the motor, the position sensor being used to detect the position of the concrete fixing device, thereby controlling the position where the concrete penetrates into the liquid and the position where it is pulled out of the liquid.

[0010] Preferably, the position sensor is a displacement sensor, which is disposed inside the rotating wheel. The displacement sensor detects the number of rotations of the rotating wheel, thereby detecting the displacement of the pull rope.

[0011] Preferably, the lower limit stop point and the upper limit stop point of the pull rope are set and connected to the driver to provide a stop signal.

[0012] Preferably, the displacement control module is installed on the vertical outer shell on the side of the equipment, and the measurement module is installed on the upper surface of the horizontal outer shell at the bottom of the equipment.

[0013] Preferably, the container is made of glass.

[0014] Preferably, the frequency converter, the time relay, the weighing device, and the timer all use digital display elements.

[0015] As can be seen from the above technical solutions, this application has the following advantages:

[0016] The automatic testing device for concrete erosion resistance of this application includes a displacement control module that controls the immersion rate of the concrete fixing module in the liquid. Different rates can be selected for different types of concrete, and the device also controls the dwell time after the concrete reaches a designated position in the liquid. This can be set according to requirements, offering the advantage of operational uniformity compared to traditional manual operation. The measurement module ensures that the total mass of the liquid in the container or the mass of the concrete sample in the concrete fixing module is measured at predetermined times. Overall, this technical solution, combining the initial concrete mass and the pre-set time for weighing the concrete, can calculate the residual concrete mass rate, accurately control the immersion and withdrawal rate, dwell time, and timely weighing, avoiding the influence of human operation factors and improving testing efficiency and accuracy. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments or technical descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a front view of the automatic testing device for concrete erosion resistance according to this application;

[0019] Figure 2 This is a left view of the automatic testing device for concrete erosion resistance according to this application;

[0020] Figure 3 This is a top view of the automatic testing device for concrete erosion resistance according to this application;

[0021] Figure 4 This is a partial front view of the automatic testing device for concrete erosion resistance according to this application;

[0022] Figure 5 This is a partial left view of the automatic testing device for concrete erosion resistance according to this application;

[0023] Figure 6 This is a partial top view of the automatic testing device for concrete erosion resistance according to this application;

[0024] The components include: 1. Rope control device; 21. Displacement control module; 2. Frequency converter; 3. Time relay; 20. Driver; 16. Rope displacement sensor; 11. Fixed free-rotating gear; 12. Rotary wheel; 5. Rope; 17. Concrete fixing module; 22. Measurement module; 18. Container; 4. Timer; 19. Weighing device; 23. Initial liquid line; 24. Limit stop line; 29. ​​Start button; 25. Stop button; 26. Rust-proof and electric shock-proof metal casing. Detailed Implementation

[0025] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the invention. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0026] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0027] Example 1

[0028] Please see Figures 1-3This embodiment provides an automatic testing device for concrete erosion resistance, including a displacement control module 21, a measurement module 22, a container 18, and a concrete fixing module 17.

[0029] Furthermore, in this embodiment, the displacement control module 21 adopts a combination of frequency converter 2, time relay 3, and driver 20. The driver 20 includes a motor, a wheel 12, and a pull rope 5. The motor is connected to the wheel 12, and the wheel 12 is connected to the concrete fixing module through the pull rope 5. Other combined drive methods can also be used to achieve the effect of this utility model, and it is not limited to this.

[0030] Furthermore, the displacement control module 21 also includes a position sensor. In this embodiment, a rope displacement sensor 16 is installed inside the rotating wheel 12. The displacement of the rope 5 is detected by detecting the number of rotations of the rotating wheel 12, and the length information of the upper and lower limit stop points is stored. It is connected to the driver 20 to provide a stop signal. Other forms of position sensors can also be used, and it is not limited to this.

[0031] Furthermore, in this embodiment, the measuring module 22 is connected to the weighing device 19 and the timer 4. Other embodiments may also use other combinations to achieve the effects of weighing and timing, and are not limited to this.

[0032] Furthermore, in this embodiment, the weighing device 19 is installed on the upper surface of the lower horizontal outer shell of the equipment to weigh the mass of the remaining liquid in the container 18 after the concrete fixing module 17 is lifted out at a preset time. Other embodiments may also use the method of measuring the mass of the concrete sample in the concrete fixing module, and are not limited to this.

[0033] Furthermore, the prepared concrete sample is weighed, with the initial mass of the concrete sample set as m. Then, the concrete sample is placed in the concrete fixing module 17 and fixed to the pull rope 5.

[0034] Furthermore, after the power supply of the automatic measuring device is turned on, the weighing device 19 automatically weighs the initial liquid and its container 18, setting the mass as M1.

[0035] Further, set the speed of inverter 2, the stop time of time relay 3, and the weighing time of timer 4, and press the start button 29.

[0036] Furthermore, the drive 20 drives the wheel 12 to rotate based on the settings of the inverter 2, and lowers the concrete fixing module 17 through the pull rope 5. When the bottom of the concrete fixing module 17 is aligned with the limit stop line 24, the pull rope displacement sensor 16 detects the information of the upper and lower limit stop points and provides a stop signal to the drive 20. The drive 20 stops working, and the timer 4 starts timing at the same time.

[0037] Furthermore, the time relay 3 starts working. After the preset time is reached, the driver 20 rotates in the opposite direction, driving the wheel 12 to rise, causing the concrete fixing module 17 to rise out of the liquid. When it reaches the upper limit stop point, the driver 20 stops working.

[0038] Furthermore, following the experimental procedure requirements, the immersion and evacuation process is repeated. After the preset time is reached, the weighing device 19 automatically weighs the mass M2 of the remaining liquid after the concrete fixing module 17 is evacuated. Combined with the known initial concrete mass m, the remaining concrete mass rate D = 1 - (M1 - M2) / m can be obtained.

[0039] Furthermore, after the test is completed, press the stop button 25.

[0040] The principle behind this technical solution is that it can automatically immerse concrete in liquid for flushing at a preset frequency and time, and measure some variables of the liquid during the flushing process, such as the weight change of the concrete sample and the weight change of the liquid.

[0041] Example 2

[0042] Please see Figures 1-6 This embodiment provides an automatic testing device for concrete erosion resistance.

[0043] In this embodiment, the frequency converter 2 is used to regulate the rotation speed of the driver 20 to control the immersion and egress rate of the concrete fixing module 17 in the liquid, and the time relay 3 is used to control the dwell time of the concrete fixing module 17 after it reaches the bottom of the liquid.

[0044] Before pressing the start button 29, the concrete fixing module 17 is locked by the rope control device 1. The internal fixed free-rotating gear 11 is connected to the sawtooth locking position of the wheel 12 of the binding rope 5 to reduce the vertical movement resistance of the rope 5.

[0045] Furthermore, the concrete fixing module 17 is pulled to the immersion line by the rope control device 1, corresponding to the initial liquid line 23 of the container 18 containing the liquid.

[0046] Furthermore, the container 18 for holding the liquid is made of glass, and its inner diameter is compatible with the concrete fixing module 17.

[0047] Furthermore, the driver 20 is installed in the upper horizontal housing of the equipment and connected to the frequency converter 2 and the time relay 3. The wheel 12 is controlled by the driver 20 and the pull rope displacement sensor 16 through the fixed free-rotating gear 11. The maximum and minimum distances of the pull rope 5 are set to ensure that the concrete fixing module 17 is moved to a specific position as needed.

[0048] Furthermore, the frequency converter 2, time relay 3, start button 29, and stop button 25 are arranged side by side on the vertical side of the rust-proof and electric shock-proof metal casing 26, arranged sequentially from top to bottom.

[0049] Furthermore, the layout is unified with the displacement control module 21, resulting in a clean and simple overall appearance and easy overall control. The start button 29 and stop button 25 provide overall control over the entire device. In addition, the selection of a rust-proof and shock-proof metal casing 26 avoids electric shock injuries during the testing process.

[0050] Furthermore, throughout the entire process, the frequency converter 2, time relay 3, weighing device 19, and timer 4 all use digital display elements to precisely control time and quality, avoid the influence of human operation factors, and improve test efficiency and accuracy.

[0051] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. An automatic measuring device for concrete erosion test, characterized by, The device comprises a displacement control module, a measuring module, a container and a concrete fixing module; the container is used for containing liquid; the displacement control module is connected with the concrete fixing module and is used for controlling the concrete fixing module to enter or leave the liquid in the container; the measuring module is connected with the container or the concrete fixing module and is used for measuring the total mass of the container and the liquid in the container or measuring the mass of the concrete sample in the concrete fixing module.

2. The apparatus of claim 1, wherein, The displacement control module comprises a frequency converter, a time relay and a driver; the frequency converter and the time relay are connected with the driver respectively; and the driver is connected with the concrete fixing module.

3. The apparatus of claim 2, wherein, The measuring module comprises a weighing device and a timer; the weighing device is connected with the timer.

4. The apparatus of claim 3, wherein, The driver comprises a motor, a rotating wheel and a pull rope; the motor is connected with the rotating wheel; and the rotating wheel is connected with the concrete fixing module through the pull rope.

5. The apparatus of claim 4, wherein, A position sensor is further comprised; the position sensor is connected with the motor; and the position sensor is used for detecting the position of the concrete fixing device so as to control the position of the concrete into the liquid and the position of the concrete leaving the liquid.

6. The apparatus of claim 5, wherein, The position sensor is a displacement sensor; the displacement sensor is arranged in the rotating wheel; the displacement sensor detects the number of rotations of the rotating wheel so as to detect the displacement of the pull rope.

7. The apparatus of claim 6, wherein, Lower limit position stop points and upper limit position stop points of the pull rope are arranged and are connected with the driver to provide stop signals.

8. The apparatus of claim 1, wherein, The displacement control module is installed on the vertical shell of the side of the device; and the measuring module is installed on the upper surface of the horizontal shell of the lower part of the device.

9. The apparatus of claim 1, wherein, The container is made of glass.

10. The apparatus of claim 3, wherein, The frequency converter, the time relay, the weighing device and the timer all adopt digital display elements.

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