Apparatus for measuring expansion ratio of an expanding agent

Abstract

The utility model relates to the technical field of expansion rate determination, specifically speaking is used for expansion agent's expansion rate determination device, include: bottom plate, bottom plate is cross -shaped, centre bucket is fixedly connected in the upper end of bottom plate, the surface of centre bucket is equipped with a plurality of expansion holes, and determine the component, it is equipped with multiple groups, and each group determination component all includes connecting door board, determination door board and measuring groove, and measuring groove is equipped with two, and connecting door board is connected with the surface of centre bucket through two groups of positioning components, through using this device, connecting door board adopts positioning component connection with centre bucket, and the installation and disassembly of convenient connecting door board are convenient for the maintenance to device, and the expansion value of measuring out is accurate through the surface sliding of determination door board in measuring groove.

Description

Technical Field

[0001] This utility model relates to the field of expansion rate measurement technology, and in particular to an expansion rate measurement device for expansion agents. Background Technology

[0002] The expansion rate determination of expansive agents is a key indicator for evaluating their volume change during hardening, and is mainly conducted through standard test methods. The test involves first preparing cement mortar or concrete specimens with a specified mix proportion, incorporating a specific ratio of expansive agent. After molding, the specimens are cured in a constant temperature and humidity environment, typically at (20±2)℃ and relative humidity ≥95%. The determination is divided into initial length benchmark values ​​and length changes at different ages, measured using precision instruments such as a length comparator or dial gauge. The benchmark value is generally measured after demolding (e.g., 24 hours), followed by length changes measured at 3d, 7d, 14d, and 28d, and the expansion rate at each stage is calculated. The expansion rate formula is ε=(Lt-L0) / L0×100%, where L0 is the benchmark length and Lt is the length at age t. Multiple sets of specimens should be prepared in parallel to reduce error, and the average value is taken. Influencing factors include water-cement ratio, curing temperature, expansive agent dosage, and cement type. The measured data are used to verify the effectiveness of the expanding agent in compensating for shrinkage or generating self-stress, ensuring its effectiveness in suppressing cracks in engineering projects. During the test, attention must be paid to standardized operating procedures to avoid vibration or temperature fluctuations interfering with measurement accuracy.

[0003] In the existing technology, the measurement of the expansion rate of the expanding agent requires the assembly of a variety of complex instruments. The expanding agent is injected into the instrument to measure its expansion rate. There is no expansion rate measuring device that is easy to assemble and disassemble. After the expanding agent solidifies, it is difficult to clean the inside of the instrument. Utility Model Content

[0004] The purpose of this invention is to provide an expansion rate measuring device for expanding agents in order to solve the above-mentioned problems, thereby improving the lack of an expansion rate measuring device that is easy to assemble and disassemble, and the difficulty in cleaning the instrument after the expanding agent solidifies.

[0005] This utility model achieves the above-mentioned objective through the following technical solution: a device for measuring the expansion rate of an expanding agent, comprising: The base plate is cross-shaped; A central barrel, fixedly connected to the upper end of the base plate, has multiple expansion holes on its surface; and The measuring assembly is provided in multiple sets. Each set of the measuring assembly includes a connecting door panel, a measuring door panel, and a measuring slot. There are two measuring slots. The connecting door panel is connected to the surface of the central barrel through two sets of positioning components. The measuring door panel is slidably connected inside the connecting door panel. Both measuring slots are opened on the upper surface of the base plate.

[0006] Preferably, each positioning component includes a fixing block, a positioning rod, a positioning block, and a torque spring. There are two fixing blocks, both of which are fixedly connected to the surface of the base plate. The positioning rod is rotatably connected to the adjacent ends of the two fixing blocks. The torque spring is fixedly connected inside the positioning rod, and its upper and lower ends are respectively fixedly connected to the surfaces of the two fixing blocks. The positioning block is fixedly connected to the surface of the connecting door panel, and the positioning block matches the positioning rod.

[0007] Preferably, the surface of the base plate is provided with multiple limiting grooves, and the multiple connecting door panels are slidably connected in the multiple limiting grooves.

[0008] Preferably, the central barrel is internally threaded with a top cover.

[0009] Preferably, a handle is fixedly connected to the upper end of the top cover.

[0010] Preferably, the width of the base plate is 100cm.

[0011] Preferably, the measuring range of the measuring groove is 0-20cm.

[0012] The beneficial effects of this utility model are: 1. In this solution, by using this device, the connecting door panel and the central barrel are connected by a positioning component, which facilitates the installation and disassembly of the connecting door panel and makes it easier to maintain the device. At the same time, by measuring the sliding of the door panel on the surface of the measuring groove, the measured expansion value is accurate.

[0013] 2. In this solution, when expansion is required in a single direction, a baffle is used to block the unused expansion holes, with a maximum of four expansion holes open. Attached Figure Description

[0014] Figure 1 This is a first-view perspective perspective view of the present invention; Figure 2 This is a second-view perspective perspective view of the present invention; Figure 3 This utility model Figure 2 A magnified view of a section at point A in the middle; Figure 4 This is a cross-sectional view of the present invention; Figure 5 This is the front view of the present invention.

[0015] In the diagram: 1. Base plate; 2. Measuring groove; 3. Limiting slide groove; 4. Center barrel; 5. Connecting door panel; 6. Measuring door panel; 7. Top cover; 8. Handle; 9. Fixing block; 10. Positioning rod; 11. Positioning block. Detailed Implementation

[0016] 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.

[0017] In practical implementation: such as Figures 1-5 As shown, the apparatus for measuring the expansion rate of an expanding agent includes: Base plate 1, base plate 1 is cross-shaped; The central barrel 4 is fixedly connected to the upper end of the base plate 1, and multiple expansion holes are formed on the surface of the central barrel 4; and The measuring assembly is provided in multiple sets. Each measuring assembly includes a connecting door plate 5, a measuring door plate 6, and a measuring groove 2. There are two measuring grooves 2. The connecting door plate 5 is connected to the surface of the central barrel 4 through two sets of positioning components. The measuring door plate 6 is slidably connected inside the connecting door plate 5. Both measuring grooves 2 are opened on the upper surface of the base plate 1.

[0018] In this embodiment: the base plate 1 has a cross-shaped structure, and the central barrel 4 is installed at the upper middle position of the base plate 1. The central barrel 4 is used to inject an expanding agent. When the expanding agent expands, it enters the connecting door plate 5 through the expansion hole. The measuring component is provided with four sets. The connecting door plate 5 in the measuring component is connected to the surface of the central barrel 4 through the positioning component. The measuring door plate 6 slides in the connecting door plate 5. The measuring door plate 6 is initially located in the connecting door plate 5. When the expanding expanding agent enters the connecting door plate 5 and fills the connecting door plate 5, it pushes the measuring door plate 6 to slide on the surface of the measuring groove 2. The position where the measuring door plate 6 slides on the surface of the measuring groove 2 is the expansion value of the expanding agent. Then, the expansion coefficient of the expanding agent is calculated based on this value. When expansion in a single direction is required, a baffle is used to block the unused expansion holes, and a maximum of four expansion holes are open.

[0019] like Figures 1-5 As shown, each positioning assembly includes a fixing block 9, a positioning rod 10, a positioning block 11, and a torque spring. There are two fixing blocks 9, both of which are fixedly connected to the surface of the base plate 1. The positioning rod 10 is rotatably connected to the near ends of the two fixing blocks 9. The torque spring is fixedly connected inside the positioning rod 10, and the upper and lower ends of the torque spring are respectively fixedly connected to the surfaces of the two fixing blocks 9. The positioning block 11 is fixedly connected to the surface of the connecting door panel 5, and the positioning block 11 matches the positioning rod 10.

[0020] In this embodiment: the positioning rod 10 in each positioning assembly is connected to the positioning block 11 on the surface of the connecting door panel 5 under the elastic force of the torque spring. When it is necessary to disassemble the connecting door panel 5, the positioning rod 10 is moved out from the surface of the positioning block 11.

[0021] like Figures 1-5 As shown, the surface of the base plate 1 is provided with multiple limiting grooves 3, and multiple connecting door panels 5 are slidably connected in the multiple limiting grooves 3 respectively.

[0022] In this embodiment, the limiting groove 3 is used to connect the sliding of the door panel 5, limit the connection of the door panel 5, and maintain the stability of the connection of the door panel 5 during use.

[0023] like Figures 1-5 As shown, the central barrel 4 is internally threaded with a top cover 7.

[0024] In this embodiment: the top cover 7 is threadedly connected to the central barrel 4. After the expanding agent is injected into the central barrel 4, the top cover 7 is threadedly connected to the central barrel 4, and then the expanding agent expands in the central barrel 4.

[0025] like Figures 1-5 As shown, a handle 8 is fixedly connected to the upper end of the top cover 7.

[0026] In this embodiment, the handle 8 facilitates the rotation of the top cover 7, making it convenient for the installation and removal of the top cover 7.

[0027] like Figures 1-5 As shown, the width of base plate 1 is 100cm.

[0028] In this embodiment, the length and width of the base plate 1 are both 100cm.

[0029] like Figures 1-5 As shown, the measuring range of measuring groove 2 is 0-20cm.

[0030] In this embodiment, the sliding distance of the door panel 6 on the surface of the measuring groove 2 is measured to be up to 20cm.

[0031] In use, the device first slides the connecting door plate 5 through the limiting groove 3, and the positioning rod 10 connects to the positioning block 11 on the surface of the connecting door plate 5 under the action of the torque spring. After the connecting door plate 5 is installed, the expanding agent is injected into the central barrel 4, and then the top cover 7 is rotated and threaded into the central barrel 4. The expanding agent begins to expand in the central barrel 4, and enters the connecting door plate 5 and the measuring door plate 6 through the expansion hole. As the expanding agent expands, the measuring door plate 6 is pushed out of the connecting door plate 5. The surface of the measuring groove 2 slides, and the sliding distance is the expansion value. The expansion coefficient can then be calculated based on this value. After the measurement is completed, the positioning rod 10 is rotated to overcome the spring force of the torque spring, so that the positioning rod 10 is moved out of the surface of the positioning block 11. After the positioning rods 10 on both sides are moved out, the connecting door panel 5 can be removed. By using this device, the connecting door panel 5 and the central barrel 4 are connected by a positioning component, which facilitates the installation and removal of the connecting door panel 5 and makes it easier to maintain the device. At the same time, by measuring the sliding of the door panel 6 on the surface of the measuring groove 2, the measured expansion value is accurate.

[0032] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An apparatus for measuring the expansion rate of an expanding agent, characterized in that, include: The base plate (1) is cross-shaped; A central barrel (4) is fixedly connected to the upper end of the base plate (1), and the surface of the central barrel (4) is provided with multiple expansion holes; and The measuring components are provided in multiple sets. Each set of measuring components includes a connecting door plate (5), a measuring door plate (6), and a measuring groove (2). There are two measuring grooves (2). The connecting door plate (5) is connected to the surface of the central barrel (4) through two sets of positioning components. The measuring door plate (6) is slidably connected inside the connecting door plate (5). Both measuring grooves (2) are opened on the upper surface of the base plate (1).

2. The apparatus for measuring the expansion rate of an expanding agent according to claim 1, characterized in that: Each of the positioning components includes a fixing block (9), a positioning rod (10), a positioning block (11), and a torque spring. There are two fixing blocks (9), and both fixing blocks (9) are fixedly connected to the surface of the base plate (1). The positioning rod (10) is rotatably connected to the close ends of the two fixing blocks (9). The torque spring is fixedly connected inside the positioning rod (10), and the upper and lower ends of the torque spring are respectively fixedly connected to the surfaces of the two fixing blocks (9). The positioning block (11) is fixedly connected to the surface of the connecting door panel (5), and the positioning block (11) matches the positioning rod (10).

3. The apparatus for measuring the expansion rate of an expanding agent according to claim 2, characterized in that: The surface of the base plate (1) is provided with multiple limiting grooves (3), and the multiple connecting door panels (5) are respectively slidably connected in the multiple limiting grooves (3).

4. The apparatus for measuring the expansion rate of an expanding agent according to claim 3, characterized in that: The central barrel (4) is internally threaded with a top cover (7).

5. The apparatus for measuring the expansion rate of an expanding agent according to claim 4, characterized in that: A handle (8) is fixedly connected to the upper end of the top cover (7).

6. The apparatus for measuring the expansion rate of an expanding agent according to claim 5, characterized in that: The width of the base plate (1) is 100cm.

7. The apparatus for measuring the expansion rate of an expanding agent according to claim 6, characterized in that: The measuring range of the measuring groove (2) is 0-20cm.

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