Low-carbon high-performance concrete crack test evaluation device

Abstract

The utility model relates to concrete crack test technical field discloses a kind of low-carbon high-performance concrete crack test evaluation device, including test box, the inside of test box is provided with multiple fixed components, dust removal component is arranged in the inner wall of test box, the fixed component includes the placement cavity fixedly connected in the inside of test box, two connecting rods are rotatably connected in the lateral wall of placement cavity, the one end of connecting rod is slidably connected with limit sleeve, the lateral wall of limit sleeve is provided with sliding slot, the bottom of limit sleeve is fixedly connected with not less than one telescopic rod, multiple pull rods are slidably connected in the inside of limit sleeve, spring is provided on the surface of multiple pull rods and is sleeved with. In the utility model, by the structural setting of fixed component, it solves the problem that the fixing structure of test object is lacked in the prior art when testing, the test object will be offset when testing, and the accuracy and effectiveness of test data are interfered.

Description

Technical Field

[0001] This utility model relates to the field of concrete crack testing technology, and in particular to a low-carbon high-performance concrete crack testing and evaluation device. Background Technology

[0002] With the increasing demand for green and low-carbon development in the construction industry, low-carbon high-performance concrete has become a research hotspot due to its advantages such as reduced cement usage and utilization of industrial solid waste. However, its special mix proportions and construction conditions may increase the risk of shrinkage cracking, directly affecting the durability and safety of the structure. To ensure the reliable application of low-carbon high-performance concrete in engineering, it is urgent to develop a dedicated testing and evaluation device to accurately simulate the crack generation conditions under actual working conditions, systematically study its crack development law, and provide a scientific basis for material optimization and quality control. The low-carbon high-performance concrete crack testing and evaluation device has emerged to meet this need.

[0003] Existing low-carbon high-performance concrete crack testing and evaluation devices mainly induce cracks in concrete specimens in a controlled environment by simulating the constraints in actual engineering. At the same time, they use technologies such as image recognition, ultrasonic testing, or strain measurement to monitor and collect data on parameters such as crack width, depth, and propagation rate in real time, thereby quantitatively evaluating the crack resistance of concrete and providing a basis for material mix optimization and engineering applications.

[0004] However, existing low-carbon high-performance concrete crack testing and evaluation devices lack a fixing structure for the test object during testing. As a result, the test object may shift during testing, interfering with the accuracy and validity of the test data. Therefore, a low-carbon high-performance concrete crack testing and evaluation device is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a low-carbon high-performance concrete crack test evaluation device, which aims to improve the problem in the prior art that there is no fixed structure for the test object during the test, and the test object will shift during the test, interfering with the accuracy and validity of the test data.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a low-carbon high-performance concrete crack test evaluation device, comprising a test chamber, wherein multiple fixing components are arranged inside the test chamber, and a dust removal component is arranged on the inner wall of the test chamber. Each fixing component includes a placement cavity fixedly connected inside the test chamber. Two connecting rods are rotatably connected to the side wall of the placement cavity. A limiting sleeve is slidably connected to one end of each connecting rod. A sliding groove is provided on the side wall of the limiting sleeve. At least one telescopic rod is fixedly connected to the bottom of the limiting sleeve. Multiple pull rods are slidably connected inside the limiting sleeve. Springs are sleeved on the surface of each of the multiple pull rods. A limiting plate is fixedly connected to one end of each spring. Multiple limiting grooves are provided inside the limiting sleeve.

[0007] As a further description of the above technical solution:

[0008] The dust removal assembly includes a dust removal box fixedly connected to the inner wall of the test chamber, an air pump fixedly connected inside the dust removal box, a filter screen provided at the bottom of the air pump, a collection box slidably connected inside the dust removal box, and an air extraction pipe abutting one end of the collection box.

[0009] As a further description of the above technical solution:

[0010] An electric heating tube is fixedly connected inside the test chamber, and a detection head is fixedly connected inside the test chamber.

[0011] As a further description of the above technical solution:

[0012] The limiting sleeve abuts against the top of the placement cavity, and one end of the telescopic rod is fixedly connected to the top of the placement cavity;

[0013] As a further description of the above technical solution:

[0014] One end of the spring is fixedly connected to the inside of the limiting groove, and the pull rod is fixedly connected to the inside of the limiting plate;

[0015] As a further description of the above technical solution:

[0016] The limiting plate is slidably connected inside the limiting groove, and one end of the pull rod abuts against the inside of the groove;

[0017] As a further description of the above technical solution:

[0018] The filter screen is fixedly connected inside the dust collection box;

[0019] As a further description of the above technical solution:

[0020] The exhaust pipe is fixedly connected to the side wall of the dust collector.

[0021] This utility model has the following beneficial effects:

[0022] 1. In this utility model, through the structural setting of the fixed component, pulling the pin causes the limiting plate to slide in the limiting groove and compress the spring. When the connecting rod is rotated, its movement can drive the limiting sleeve to move upward, accurately fixing and limiting the internal IoT terminal. After releasing the control of the pin, the elastic force of the first spring can drive the limiting plate and the pin to reset, limiting the connecting rod and preventing it from shifting. The telescopic rod provides stable support for the limiting sleeve, improving the stability of the test item during testing. This solves the problem in the prior art that there is no fixed structure for the test object during testing, which causes the test object to shift during testing, interfering with the accuracy and validity of the test data.

[0023] 2. In this utility model, through the structural design of the dust removal component, the air pump generates negative pressure, and the airflow is guided through the air extraction pipe to form a stable negative pressure field inside the dust removal box. After the dust-laden airflow enters, the filter screen uses physical interception and sieving effects to efficiently capture particulate matter, achieving gas-solid separation. The collection box serves as a dust temporary storage unit, which is convenient for regular cleaning, ensuring the continuous operation of the system. It can effectively purify the dust-laden airflow, maintain a clean test environment, provide a stable and clean auxiliary environment for concrete crack testing, indirectly ensure the accuracy of test data, facilitate the efficient conduct of the testing process, and enhance the practicality of the low-carbon high-performance concrete crack test evaluation device. Attached Figure Description

[0024] Figure 1 This is a three-dimensional schematic diagram of a low-carbon high-performance concrete crack testing and evaluation device proposed in this utility model.

[0025] Figure 2 This is a schematic diagram of the structure of the fixing component of a low-carbon high-performance concrete crack testing and evaluation device proposed in this utility model.

[0026] Figure 3 This is a schematic diagram of the structure of the fixing component of a low-carbon high-performance concrete crack testing and evaluation device proposed in this utility model.

[0027] Figure 4 This is a schematic diagram of the dust removal component of a low-carbon, high-performance concrete crack testing and evaluation device proposed in this utility model.

[0028] Legend:

[0029] 1. Test chamber; 2. Fixing assembly; 3. Dust removal assembly; 4. Electric heating element; 5. Detection head; 6. Placement chamber; 7. Connecting rod; 8. Limiting sleeve; 9. Slide groove; 10. Telescopic rod; 11. Pull rod; 12. Spring; 13. Limiting plate; 14. Limiting groove; 15. Dust removal box; 16. Air pump; 17. Filter screen; 18. Collection box; 19. Air extraction pipe. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Reference Figures 1-3 This utility model provides an embodiment of a low-carbon, high-performance concrete crack testing and evaluation device, comprising a test chamber 1, which provides installation space for the overall device. Multiple fixing components 2 are installed inside the test chamber 1 to securely fix the test object and prevent it from shifting during testing. A dust removal component 3 is installed on the inner wall of the test chamber 1 to remove dust from the surface of the test object. Each fixing component 2 includes a placement cavity 6 fixedly connected inside the test chamber 1, providing space for the test object. Two connecting rods 7 are rotatably connected to the side wall of the placement cavity 6, with one end of each connecting rod 7 slidably connected to a limiting sleeve 8. The connecting rods 7 connect the limiting sleeve 8 to the placement cavity 6. A sliding groove 9 is provided on the side wall of the limiting sleeve 8, providing sliding space for the connecting rods 7. At least one telescopic rod 10 is fixedly connected to the bottom of the limiting sleeve 8, and the telescopic rod 10 can retract as the limiting sleeve 8 moves up and down. Multiple pull rods 11 are slidably connected inside the limiting sleeve 8, and springs 12 are fitted on the surface of each pull rod 11. One end of each spring 12 is fixedly connected to a limiting plate 13. Spring 12 provides reset elasticity for limiting plate 13. Multiple limiting grooves 14 are provided inside the limiting sleeve 8, providing movement space for the limiting plate 13. An electric heating tube 4 is fixedly connected inside the test chamber 1, heating the interior of the test chamber 1 to simulate constraint conditions. A detection head 5 is fixedly connected inside the test chamber 1, monitoring the test object in real time. The limiting sleeve 8 abuts against the top of the placement cavity 6. One end of the telescopic rod 10 is fixedly connected to the top of the placement cavity 6, connecting the placement cavity 6 and the limiting sleeve 8. The limiting sleeve 8 provides stable support for the limiting sleeve 8. One end of the spring 12 is fixedly connected to the inside of the limiting groove 14, and the pull rod 11 is fixedly connected to the inside of the limiting plate 13. The limiting plate 13 is slidably connected to the inside of the limiting groove 14. When the limiting plate 13 slides inside the limiting groove 14, the spring 12 provides a reset force for the limiting plate 13, causing the limiting plate 13 to drive the pull rod 11 to reset. One end of the pull rod 11 abuts against the inside of the sliding groove 9, fixing the connecting rod 7 at one end of the sliding groove 9, fixing the position of the connecting rod 7, and fixing the position of the limiting sleeve 8 accordingly.

[0032] Reference Figures 1-4The dust removal assembly 3 includes a dust removal box 15 fixedly connected to the inner wall of the test chamber 1. An air pump 16 is fixedly connected inside the dust removal box 15, providing a dust removal space for the air pump 16. A filter screen 17 is provided at the bottom of the air pump 16, which can separate particulate impurities from air and prevent particulate impurities from entering the air pump 16. A collection box 18 is slidably connected inside the dust removal box 15, which can collect particulate impurities uniformly. One end of the collection box 18 is connected to an air extraction pipe 19, connecting the test chamber 1 and the dust removal box 15. The filter screen 17 is fixedly connected inside the dust removal box 15, and the air extraction pipe 19 is fixedly connected to the side wall of the dust removal box 15. The air pump 16 sucks particulate matter generated on the surface of the test object due to the constraint conditions into the dust removal box 15 through the air extraction pipe 19.

[0033] Working principle: Before testing, the item to be tested is placed inside the placement cavity 6. Then, the pull rod 11 is pulled, causing the limiting plate 13 to slide along the limiting groove 14 and compress the spring 12. The connecting rod 7 can rotate around the connection point with the placement cavity 6. One end of the connecting rod 7 moves along the sliding groove 9, causing the limiting sleeve 8 to move upward. The limiting sleeve 8 causes the telescopic rod 10 to extend, providing stable support for the limiting sleeve 8. The limiting sleeve 8 fixes the area around the test object. After releasing the control of the pull rod 11, the spring 12 automatically resets due to its own elasticity, pushing the limiting plate 13 and the pull rod 11 back to their original positions. Pull rod 11 enters the slide groove 9, limiting the position of connecting rod 7 inside the slide groove 9, so that the limiting sleeve 8 stabilizes the test object, and then the test can be carried out. The electric heating tube 4 heats the inside of the test chamber 1 to simulate the constraint conditions. At the same time, the detection head 5 observes the test object and transmits data. The vacuum pump 16 can be started at any time. The vacuum pump 16 sucks the particulate matter generated on the surface of the test object due to the constraint conditions into the dust collection box 15 through the vacuum pipe 19. The filter screen 17 separates the air and particulate impurities. The air is discharged by the vacuum pump 16, and the filtered particulate impurities fall into the collection box 18 for unified treatment.

[0034] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A test evaluation device for cracks in low-carbon high-performance concrete, comprising a test chamber (1), characterized in that: The test chamber (1) is equipped with multiple fixing components (2) inside, and the inner wall of the test chamber (1) is equipped with a dust removal component (3). The fixing component (2) includes a placement cavity (6) fixedly connected inside the test chamber (1). Two connecting rods (7) are rotatably connected to the side wall of the placement cavity (6). One end of the connecting rod (7) is slidably connected to a limiting sleeve (8). A sliding groove (9) is provided on the side wall of the limiting sleeve (8). At least one telescopic rod (10) is fixedly connected to the bottom of the limiting sleeve (8). Multiple pull rods (11) are slidably connected inside the limiting sleeve (8). Springs (12) are sleeved on the surface of each of the multiple pull rods (11). One end of each spring (12) is fixedly connected to a limiting plate (13). Multiple limiting grooves (14) are provided inside the limiting sleeve (8).

2. The low-carbon high-performance concrete crack testing and evaluation device according to claim 1, characterized in that: The dust removal assembly (3) includes a dust removal box (15) fixedly connected to the inner wall of the test box (1). An air pump (16) is fixedly connected inside the dust removal box (15). A filter screen (17) is provided at the bottom of the air pump (16). A collection box (18) is slidably connected inside the dust removal box (15). One end of the collection box (18) is abutted against an air extraction pipe (19).

3. The low-carbon high-performance concrete crack testing and evaluation device according to claim 1, characterized in that: An electric heating tube (4) is fixedly connected inside the test box (1), and a detection head (5) is fixedly connected inside the test box (1).

4. The low-carbon high-performance concrete crack testing and evaluation device according to claim 1, characterized in that: The limiting sleeve (8) abuts against the top of the placement cavity (6), and one end of the telescopic rod (10) is fixedly connected to the top of the placement cavity (6).

5. The low-carbon high-performance concrete crack testing and evaluation device according to claim 1, characterized in that: One end of the spring (12) is fixedly connected inside the limiting groove (14), and the pull rod (11) is fixedly connected inside the limiting plate (13).

6. The low-carbon high-performance concrete crack testing and evaluation device according to claim 1, characterized in that: The limiting plate (13) is slidably connected inside the limiting groove (14), and one end of the pull rod (11) abuts against the inside of the sliding groove (9).

7. The low-carbon high-performance concrete crack testing and evaluation device according to claim 2, characterized in that: The filter (17) is fixedly connected inside the dust collection box (15).

8. The low-carbon high-performance concrete crack testing and evaluation device according to claim 2, characterized in that: The exhaust pipe (19) is fixedly connected to the side wall of the dust collector (15).

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