Rapid detection test device for vertical expansion rate of grouting material

Abstract

The utility model discloses a rapid detection test device for the vertical expansion rate of a grouting material, which relates to the technical field of the vertical expansion rate test of the grouting material, solves the problem that the normal test process is influenced due to the falling risk caused by external impact, and comprises a box body, the box body is connected with a test structure through a clamping structure, the clamping structure comprises rotating shafts, the bottom in the box body is provided with two rotating shafts which are rotatably connected, the rotating shafts are attached to one side face of the box body, the rotating shafts are rotatably sleeved with sleeves close to the top ends, the outer side walls of the sleeves are fixedly connected with the adjacent inner side faces of the box body through cross rods, and the outer side walls of the sleeves are in threaded connection with compression bolts; and a gear is fixedly sleeved on the bottom end of the rotating shaft, so that external impact is prevented, the variation of 1 hour, 24 hours and 3 days can be recorded through the extensometer, the expansion condition does not need to be continuously monitored manually in the process, and the operation convenience is improved.

Description

Technical Field

[0001] This utility model relates to the field of vertical expansion rate testing technology for grouting materials, specifically a rapid testing device for detecting the vertical expansion rate of grouting materials. Background Technology

[0002] Ordinary grouting material is a high-tech single-component grouting material made of Portland cement, pre-graded aggregate, and additives that control expansion in the plastic state and reduce water consumption. The test process used the controlled variable method, with other factors kept constant, to study the effects of water-cement ratio, mortar-cement ratio, aggregate gradation, admixtures, and mineral admixtures on the mechanical properties of sleeve grouting material at different ages.

[0003] The existing test apparatus mixes grouting materials of different proportions and then pours them into a measuring cylinder in sequence. The vertical expansion is observed by visual inspection. The measuring cylinder is placed vertically and is prone to collapse under external impact, which affects the normal test process. Utility Model Content

[0004] The purpose of this invention is to provide a rapid testing device for the vertical expansion rate of grouting material, which can solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a rapid testing device for the vertical expansion rate of grouting material that prevents external impact, comprising a box body, the top of which is open and equipped with a matching cover plate, the box body being connected to a test structure via a clamping structure, the clamping structure including a rotating shaft, two rotating shafts being provided at the bottom of the box body, the rotating shafts being fitted against one side of the box body, a sleeve being rotatably fitted on the rotating shaft near the top, the outer wall of the sleeve being fixedly connected to the adjacent inner side of the box body via a crossbar, a clamping bolt being threaded onto the outer wall of the sleeve, a gear being fixedly fitted on the bottom end of the rotating shaft, the two gears meshing with each other, a handle being fixedly connected to the outer edge of the top end of the rotating shaft, and an arc-shaped clamping rod being fixedly connected to the outer wall of the rotating shaft near the center.

[0006] Preferably, the test structure includes a graduated cylinder, with the graduated cylinder placed at the bottom of the chamber, a rising plate inside the graduated cylinder, a rising rod fixedly connected to the top center of the rising plate, a glass cover on the top of the graduated cylinder, the top of the rising rod sliding through the glass cover and the cover plate in sequence, an extensometer installed on the outer side of the chamber, and two arc-shaped clamping rods symmetrically arranged about the graduated cylinder.

[0007] Preferably, the rising plate is circular and contacts the inner wall of the measuring cylinder, and a rubber ring is fixedly connected to the outer wall of the rising plate.

[0008] Preferably, a rubber pad is fixedly connected to the inner arc-shaped edge of the arc-shaped clamp.

[0009] Preferably, a connecting rod is fixedly connected to the outer edge of the top end of the rotating shaft, and an arc-shaped limiting rod is fixedly connected to the other end of the connecting rod. The two arc-shaped limiting rods are symmetrically arranged about the rising rod.

[0010] Preferably, both the measuring cylinder and the glass cover are made of transparent high borosilicate glass, and the outer wall of the measuring cylinder is provided with graduation lines.

[0011] Compared with the prior art, the beneficial effects of this utility model are: it allows the measuring cylinder to be placed between two arc-shaped clamps. If the handle is rotated in the opposite direction, the arc-shaped clamps will fit tightly against the outside of the measuring cylinder, effectively restricting the horizontal movement of the measuring cylinder. This design prevents external impacts. The rising plate and rising rod will rise due to expansion, and the extensometer will record the changes in 1 hour, 24 hours and 3 days. This process does not require continuous manual monitoring of the expansion, improving the convenience of operation. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0013] Figure 2 This is a three-dimensional structural diagram of the internal structure of the box body in this utility model;

[0014] Figure 3 This is a three-dimensional structural diagram of the test structure and clamping structure in this utility model;

[0015] Figure 4 This is a three-dimensional structural diagram of the experimental structure in this utility model;

[0016] Figure 5 for Figure 3 A magnified schematic diagram of the structure at point A in the middle.

[0017] In the diagram: 1. Box; 2. Extensometer; 3. Test structure; 301. Measuring cylinder; 302. Lifting rod; 303. Glass cover; 304. Lifting plate; 4. Cover plate; 5. Clamping structure; 501. Rotating shaft; 502. Gear; 503. Arc-shaped clamping rod; 504. Rubber pad; 505. Handle; 506. Connecting rod; 507. Arc-shaped limiting rod; 508. Crossbar; 509. Sleeve; 5010. Clamping bolt. Detailed Implementation

[0018] 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.

[0019] Please see Figure 1 , Figure 2 , Figure 3 and Figure 5 The diagram illustrates a rapid testing device for the vertical expansion rate of grouting material, comprising a housing 1. The top of the housing 1 is open and equipped with a matching cover plate 4. The housing 1 is connected to a test structure 3 via a clamping structure 5, which includes a rotating shaft 501. Two rotating shafts 501 are rotatably connected at the bottom of the housing 1, with each shaft 501 fitting against one side of the housing 1. A sleeve 509 is rotatably fitted onto the rotating shaft 501 near its top. The outer wall of the sleeve 509 is fixedly connected to the adjacent inner side of the housing 1 via a crossbar 508. A clamping bolt 5010 is threaded onto the outer wall of the sleeve 509. A gear 502 is fixedly fitted onto the bottom of the rotating shaft 501, with the two gears 502 meshing with each other. The outer edge of the top of the rotating shaft 501... A fixed connection handle 505 is provided, and an arc-shaped clamping rod 503 is fixedly connected to the outer wall of the rotating shaft 501 near the center. It is worth noting that after the grouting material is mixed evenly according to the ratio, it needs to be poured into the measuring cylinder 301. Then, the measuring cylinder 301 is placed at the bottom of the box 1. By manually operating the handle 505, the two gears 502 are meshed with each other, thereby driving the two rotating shafts 501 to rotate outward. This action causes the two arc-shaped clamping rods 503 to open, so that the measuring cylinder 301 can be placed between the two arc-shaped clamping rods 503. If the handle 505 is rotated in the opposite direction, the arc-shaped clamping rods 503 will fit tightly against the outer side of the measuring cylinder 301, effectively restricting the horizontal movement of the measuring cylinder 301. This design prevents external impact.

[0020] Please see Figure 2 and Figure 4 The test structure 3 includes a graduated cylinder 301, which is placed at the bottom of the chamber 1. A rising plate 304 is located inside the graduated cylinder 301, and a rising rod 302 is fixedly connected to the center of the top of the rising plate 304. A glass cover 303 is located on the top of the graduated cylinder 301. The top of the rising rod 302 slides through the glass cover 303 and the cover plate 4 in sequence. An extensometer 2 is installed on the outer side of the chamber 1. Two arc-shaped clamping rods 503 are symmetrically arranged about the graduated cylinder 301. It is worth noting that during the experiment, we used the controlled variable method and the comparison method. First, we selected... We obtained plastic expanders from different manufacturers and adjusted their dosages. Then, we poured these mixtures into the measuring cylinder 301 in sequence. Next, we pressed the rising plate 304 tightly against the upper surface of the raw material and covered it with the glass cover 303 and the cover plate 4. After that, we fixed the clamp of the extensometer 2 inside the rising rod 302. During the expansion process, the rising plate 304 and the rising rod 302 will rise due to the expansion, and the extensometer 2 will record the changes in 1 hour, 24 hours and 3 days. This process does not require continuous manual monitoring of the expansion, which improves the convenience of operation.

[0021] See Figure 2 and Figure 5The rising plate 304 is circular and contacts the inner wall of the measuring cylinder 301. A rubber ring is fixedly connected to the outer wall of the rising plate 304. It is worth noting that the use of the rubber ring significantly improves the sealing between the rising plate 304 and the inner wall of the measuring cylinder 301, ensuring the sealing of the internal gas during the expansion process and avoiding the potential impact of gas leakage on the test results.

[0022] See Figure 4 A rubber pad 504 is fixedly connected to the inner arc edge of the arc-shaped clamping rod 503. It is worth noting that the rubber pad 504 generates elastic force when it contacts the outer side of the measuring cylinder 301, thereby enhancing the firmness of squeezing and fixing the measuring cylinder 301.

[0023] See Figure 2 The outer edge of the top end of the rotating shaft 501 is fixedly connected to the connecting rod 506, and the other end of the connecting rod 506 is fixedly connected to the arc-shaped limiting rod 507. The two arc-shaped limiting rods 507 are symmetrically arranged about the rising rod 302. It is worth noting that the arc-shaped limiting rod 507 is responsible for precisely limiting the rising rod 302 to ensure that the rising rod 302 rises only in the vertical direction and avoids any lateral movement, thereby maintaining the stability of the movement.

[0024] See Figure 2 Both the measuring cylinder 301 and the glass cover 303 are made of transparent high borosilicate glass. The outer wall of the measuring cylinder 301 is provided with graduation lines. It is worth noting that the use of transparent high borosilicate glass makes it durable and not easily damaged. The graduation lines allow for more accurate and intuitive readings. Whether conducting scientific research in the laboratory or teaching demonstrations in educational settings, the combination of the measuring cylinder 301 and the glass cover 303 provides users with great convenience and reliability. In addition, the high borosilicate glass also gives the measuring cylinder 301 heat resistance, enabling it to remain stable in high-temperature environments and not easily deformed or broken due to temperature changes, thereby further ensuring the accuracy of the measurement results.

[0025] Working principle: In the experimental process, firstly, we selected plastic expansion agents from different manufacturers and adjusted their dosages. Then, we poured these mixtures into the measuring cylinder 301 in sequence. Next, we pressed the rising plate 304 tightly against the upper surface of the raw material and covered it with the glass cover 303 and the cover plate 4. After that, we placed the measuring cylinder 301 at the bottom of the box 1. By manually operating the handle 505, we made the two gears 502 mesh with each other, thereby driving the two rotating shafts 501 to rotate outward. This action caused the two arc-shaped clamps 503 to open, allowing the measuring cylinder 301 to be placed between the two clamps. If the handle 505 is rotated in the opposite direction, the arc-shaped clamps 503 will fit tightly against the outside of the measuring cylinder 301, effectively restricting the horizontal movement of the measuring cylinder 301 and fixing the clamp of the extensometer 2 inside the rising rod 302. During the expansion process, the rising plate 304 and the rising rod 302 will rise due to the expansion, and the extensometer 2 will record the changes in 1 hour, 24 hours and 3 days.

[0026] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process-method-article-or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process-method-article-or apparatus.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for rapid detection of vertical expansion rate of grouting material, comprising a box (1), characterized in that: The box (1) top is open and is provided with a matching cover (4), the box (1) is connected with test structure (3) by clamping structure (5), clamping structure (5) includes pivot (501), the bottom of the box (1) is provided with two rotatingly connected pivot (501), pivot (501) is attached to the side position of the box (1), pivot (501) is rotatably sleeved with sleeve (509) near the top end, the outer wall of sleeve (509) is fixedly connected with the adjacent inner side of box (1) through cross bar (508), the outer wall of sleeve (509) is threadedly connected with compression bolt (5010), the bottom of pivot (501) is fixedly sleeved with gear (502), two gears (502) are engaged with each other, the outer edge of the top end position of pivot (501) is fixedly connected with handle (505), the outer wall of pivot (501) is fixedly connected with arc-shaped clamping rod (503) near the center position.

2. The device for rapid detection of vertical expansion rate of grouting material according to claim 1, characterized in that, The test structure (3) includes a graduated cylinder (301), the bottom of the box (1) is placed with a graduated cylinder (301), the inside of the graduated cylinder (301) is provided with a rising plate (304), the top center of the rising plate (304) is fixedly connected with a rising rod (302), the top of the graduated cylinder (301) is provided with a glass cover (303), the top end of the rising rod (302) is sequentially slid through the glass cover (303) and the cover (4), the outer side of the box (1) is provided with an extensometer (2), two arc-shaped clamping rods (503) are symmetrically arranged about the graduated cylinder (301).

3. The device for rapid detection of vertical expansion rate of grouting material according to claim 2, characterized in that: The rising plate (304) is circular and in contact with the inner wall of the graduated cylinder (301), and the outer wall of the rising plate (304) is fixedly connected with a rubber ring.

4. The device for rapid detection of vertical expansion rate of grouting material according to claim 2, characterized in that: The inner arc-shaped edge of the arc-shaped clamping rod (503) is fixedly connected with a rubber pad (504).

5. The device for rapid detection of vertical expansion rate of grouting material according to claim 2, characterized in that: The outer edge of the top end of the pivot (501) is fixedly connected with a connecting rod (506), the other end of the connecting rod (506) is fixedly connected with an arc-shaped limiting rod (507), and two arc-shaped limiting rods (507) are symmetrically arranged about the rising rod (302).

6. The device for rapid detection of vertical expansion rate of grouting material according to claim 2, characterized in that: The graduated cylinder (301) and the glass cover (303) are made of transparent high borosilicate glass material, and the outer wall of the graduated cylinder (301) is provided with scale lines.

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