A concrete shrinkage testing device

Abstract

This utility model relates to the field of concrete testing technology and discloses a concrete shrinkage testing device, including a base, a support plate fixedly connected to the outer wall of the base, a measuring mechanism provided on the inner wall of the support plate, an outer plate fixedly connected to the outer wall of the support plate, a closing mechanism provided on the outer wall of the outer plate, a testing mechanism provided on the top of the outer wall of the support plate, a control mechanism provided on the top of the outer wall of the outer plate, the control mechanism including a dryer, a sliding plate fixedly connected to the outer wall of the side plate, a lime box fixedly connected to the inner wall of the top plate, and a telescopic component provided on the top of the outer wall of the outer plate. In this utility model, concrete is placed on the top of the support plate, and by rotating the fixing nut, the rotating rod is driven to move the positioning plate closer to the designated position on one side of the concrete. When a second test is required, the concrete is simply placed in the fixed position, and the testing device is used to complete the concrete testing, improving data accuracy and reducing labor costs.

Description

Technical Field

[0001] This utility model relates to the field of concrete testing technology, and in particular to a concrete shrinkage testing device. Background Technology

[0002] A concrete shrinkage test device is used to measure the volume change of concrete during the hardening process due to drying and auto-shrinkage. The concrete is fixed by a rigid support to ensure that the specimen shrinks freely without external interference. The device simulates the actual engineering environment by controlling temperature and humidity conditions to ensure the standardization of the shrinkage test. The device adopts constant temperature and humidity technology.

[0003] Traditional concrete shrinkage testing devices mainly use steel structures and cast iron supports to fix the column specimens with bolts or clamps. The support points at both ends are steel planes or simple ball bearings, which allow the specimens to shrink freely in the axial direction. However, there is the influence of frictional resistance. The initial scale data is read manually and the ambient temperature and humidity are recorded. The manual reading is required, which results in high labor costs.

[0004] Existing concrete shrinkage testing devices mainly rely on high-precision displacement measurement, environmental simulation control, and automated data acquisition to quantify the volume changes of concrete under different conditions, providing performance evaluation and key data for materials. However, uneven internal temperature and humidity of concrete still lead to inaccurate measurements. Therefore, a new concrete shrinkage testing device is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a concrete shrinkage testing device to improve the problem of inaccurate concrete measurements caused by uneven internal temperature and humidity of concrete in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a concrete shrinkage testing device, comprising a base, a support plate fixedly connected to the outer wall of the base, a measuring mechanism provided on the inner wall of the support plate, an outer plate fixedly connected to the outer wall of the support plate, a closing mechanism provided on the outer wall of the outer plate, a detection mechanism provided on the top of the outer wall of the support plate, and a control mechanism provided on the top of the outer wall of the outer plate.

[0007] The control mechanism includes a dry refrigerator, the outer wall of which is fixedly connected to the inner wall of the top plate, a side plate fixedly connected to the outer wall of the top plate, a sliding plate fixedly connected to the outer wall of the side plate, a lime box fixedly connected to the inner wall of the top plate, a drying plate fixedly connected to the bottom of the outer wall of the lime box, and a telescopic component provided on the top of the outer wall of the outer plate.

[0008] As a further description of the above technical solution:

[0009] The measuring mechanism includes a positioning plate, the outer wall of which is fixedly connected to the outer wall of a fixing button. A rotating rod is fixedly connected to the outer wall of the fixing button. A fixing nut is fixedly connected to the top of the outer wall of the rotating rod. A measuring ruler is fixedly connected to the top of the outer wall of the support plate. An adjustment groove is provided on the top of the outer wall of the support plate.

[0010] As a further description of the above technical solution:

[0011] The testing mechanism includes a vertical calibration plate, the outer wall of which is fixedly connected to the outer wall of the calibration block. A vertical fixed plate is fixedly connected to the top of the outer wall of the support plate. A fixing groove is provided on the outer wall of the vertical fixed plate. A horizontal calibration rod is fixedly connected to the outer wall of the vertical calibration plate. A reading component is provided at the top of the outer wall of the horizontal calibration rod.

[0012] As a further description of the above technical solution:

[0013] The closing mechanism includes a telescopic rod, the outer wall of which is fixedly connected to the outer wall of a limiting plate, and the outer wall of the outer plate is fixedly connected to the limiting plate.

[0014] As a further description of the above technical solution:

[0015] The telescopic assembly includes an inlay plate, the outer wall of which is fixedly connected to the outer wall of the support plate. The inner wall of the inlay plate has a placement groove. A rotating rod is fixedly connected to the top of the outer wall of the inlay plate, and a micro motor is fixedly connected to the top of the outer wall of the rotating rod.

[0016] As a further description of the above technical solution:

[0017] The reading assembly includes a reading rod, the top of which is fixedly connected to the outer wall of the dial indicator.

[0018] As a further description of the above technical solution:

[0019] A sliding plate is fixedly connected to the outer wall of the drying plate, a handle is fixedly connected to the outer wall of the drying plate, and a thermometer is fixedly connected to the top of the outer wall of the inlay plate.

[0020] As a further description of the above technical solution:

[0021] A sealing cover is fixedly connected to the outer wall of the outer panel, a sliding groove is provided on the right side of the outer wall of the outer panel, an observation window is fixedly connected to the outer wall of the outer panel, and a stretching plate is fixedly connected to the outer wall of the drying plate.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, the control mechanism is inlaid with a dry refrigerator and a lime box through an inlay plate, which facilitates constant temperature and humidity of the concrete. A micro motor and a rotating rod are used to make the dry refrigerator and lime box slide up and down, so as to control the temperature and humidity of the concrete. The thermometer is responsible for detecting whether the internal temperature of the outer plate reaches the standard of the concrete. The internal drying plate absorbs humidity to provide moisture to the lime, so as to provide temperature and reduce the cost of concrete production.

[0024] 2. In this utility model, when concrete is placed on the pallet, the positioning plate is moved closer to the concrete side and fixed in the designated position by rotating the fixing nut to drive the rotating rod. When a second test is required, the concrete can be placed in the fixed position and the test can be completed in cooperation with the testing agency, thereby improving the accuracy of the data and reducing labor costs. Attached Figure Description

[0025] Figure 1 This is a perspective view of a concrete shrinkage testing device proposed in this utility model;

[0026] Figure 2 This is a front view of a concrete shrinkage testing device proposed in this utility model;

[0027] Figure 3 This is a top view of a concrete shrinkage testing device proposed in this utility model;

[0028] Figure 4 This is a side view of a concrete shrinkage testing device proposed in this utility model;

[0029] Figure 5 This is a rear view of a concrete shrinkage testing device proposed in this utility model;

[0030] Figure 6 This is a cross-sectional view of the control mechanism of a concrete shrinkage testing device proposed in this utility model.

[0031] Legend:

[0032] 1. Base; 2. Control mechanism; 201. Top plate; 202. Side plate; 203. Dryer; 204. Lime box; 205. Drying plate; 206. Sliding plate; 207. Telescopic assembly; 2071. Inlay plate; 2072. Placement slot; 2073. Micro motor; 2074. Rotating rod; 3. Measuring mechanism; 301. Fixing button; 302. Rotating rod; 303. Fixing nut; 304. Adjustment slot; 305. Measuring ruler; 306 1. Positioning plate; 4. Thermometer; 5. Sealing cover; 6. Support plate; 7. Outer plate; 8. Detection mechanism; 801. Vertical fixing plate; 802. Fixing groove; 803. Vertical calibration plate; 804. Calibration block; 805. Horizontal calibration rod; 806. Reading assembly; 8061. Reading rod; 8062. Dial indicator; 9. Closing mechanism; 901. Telescopic rod; 902. Limiting plate; 10. Sliding groove; 11. Observation window; 12. Extension plate; 13. Handle. Detailed Implementation

[0033] 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.

[0034] Reference Figure 1 , Figure 2 and Figure 6 An embodiment of this utility model provides a concrete shrinkage testing device, including a base 1, which supports the entire device and fixes it. A support plate 6 is fixedly connected to the outer wall of the base 1, which is responsible for the stable installation of concrete. A measuring mechanism 3 is provided on the inner wall of the support plate 6. The measuring mechanism 3 includes a positioning plate 306. An outer plate 7 is fixedly connected to the outer wall of the support plate 6. A closing mechanism 9 is provided on the outer wall of the outer plate 7. The outer plate 7 is used to seal the interior. The closing mechanism 9 includes a telescopic rod 901, which facilitates the sealing of the sealing cover 5 and makes the internal temperature and humidity uniform. The outer wall of the telescopic rod 901 is fixedly connected to the outer wall of the limiting plate 902. The outer wall of the outer plate 7 is fixedly connected to the limiting plate 902, which facilitates the fixed support of the telescopic rod 901. A detection mechanism 8 is provided on the top of the outer wall of the support plate 6.

[0035] The testing mechanism 8 includes a vertical calibration plate 803, which is used to support the horizontal calibration rod 805 and keep it stable in a designated position. The outer wall of the vertical calibration plate 803 is fixedly connected to the outer wall of the calibration block 804. The top of the outer wall of the support plate 6 is fixedly connected to a vertical fixing plate 801, which is used to fix the specific position. The outer wall of the vertical fixing plate 801 has a fixing groove 802, which is used to cooperate with the vertical fixing plate 801 for measurement. The outer wall of the vertical calibration plate 803 is fixedly connected to the horizontal calibration rod 805, which is used to measure the front of the concrete. The top of the outer wall of the horizontal calibration rod 805 is provided with a reading component 806, which includes a reading rod 8061. The top of the outer wall of the reading rod 8061 is fixedly connected to the outer wall of the dial indicator 8062, and its main function is to cooperate with the dial indicator 8062 to complete the reading measurement. The top of the outer wall of the outer plate 7 is provided with a control mechanism 2.

[0036] Control mechanism 2 includes a dry refrigerator 203, the outer wall of which is fixedly connected to the inner wall of the top plate 201. The main function of the dry refrigerator 203 is to provide humidity to the concrete to ensure accurate concrete measurement. A side plate 202 is fixedly connected to the outer wall of the top plate 201, and a sliding plate 206 is fixedly connected to the outer wall of the side plate 202. The function of the side plate 202 is to allow the top plate 201 to slide up and down in cooperation with the sliding plate 206. A lime box 204 is fixedly connected to the inner wall of the top plate 201 to facilitate the provision of temperature to the concrete and ensure accurate detection. A dry... The drying plate 205 is mainly used to absorb humidity and provide moisture and temperature for the lime box 204. The top of the outer wall of the outer plate 7 is provided with a telescopic component 207. The telescopic component 207 includes an inlay plate 2071, which facilitates the fixing of the lime box 204 and the dry refrigerator 203. The outer wall of the inlay plate 2071 is fixedly connected to the outer wall of the support plate 6. The inner wall of the inlay plate 2071 is provided with a placement groove 2072. The top of the outer wall of the inlay plate 2071 is fixedly connected with a rotating rod 2074, which facilitates the movement of the main box. The top of the outer wall of the rotating rod 2074 is fixedly connected with a micro motor 2073.

[0037] Specifically, the device includes a base 1, whose main function is to support and fix the entire device. A support plate 6 is fixedly connected to the outer wall of the base 1, which is responsible for the stable installation of concrete. The measuring mechanism 3 includes a positioning plate 306. An outer plate 7 is fixedly connected to the outer wall of the support plate 6. A closing mechanism 9 is provided on the outer wall of the outer plate 7. The outer plate 7 is used to seal the interior. The closing mechanism 9 includes a telescopic rod 901, whose main function is to facilitate the sealing of the sealing cover 5 and to ensure uniform temperature and humidity distribution inside. The outer wall of the telescopic rod 901 is fixedly connected to the outer wall of the limiting plate 902. The outer wall of the outer plate 7 is fixedly connected to the limiting plate 902, which facilitates the fixed support of the telescopic rod 901. A detection mechanism 8 is provided on the top of the outer wall of the support plate 6.

[0038] The testing mechanism 8 includes a vertical calibration plate 803, which mainly supports the horizontal calibration rod 805 and keeps it stable in a designated position. A vertical fixing plate 801 is fixedly connected to the top of the outer wall of the support plate 6, which facilitates fixing the specific position. A fixing groove 802 is opened on the outer wall of the vertical fixing plate 801, which is used to cooperate with the vertical fixing plate 801 for measurement. A horizontal calibration rod 805 is fixedly connected to the outer wall of the vertical calibration plate 803, which is used to measure the front of the concrete. A reading component 806 is provided at the top of the outer wall of the horizontal calibration rod 805. The reading component 806 includes a reading rod 8061. The top of the outer wall of the reading rod 8061 is fixedly connected to the outer wall of the dial indicator 8062, which is mainly used to cooperate with the dial indicator 8062 to complete the reading measurement. A control mechanism 2 is provided at the top of the outer wall of the outer plate 7.

[0039] Control mechanism 2 includes a dry refrigerator 203, the outer wall of which is fixedly connected to the inner wall of the top plate 201. The main function of the dry refrigerator 203 is to provide humidity to the concrete to ensure accurate concrete measurement. A side plate 202 is fixedly connected to the outer wall of the top plate 201, and a sliding plate 206 is fixedly connected to the outer wall of the side plate 202. The function of the side plate 202 is to allow the top plate 201 to slide up and down in cooperation with the sliding plate 206. A lime box 204 is fixedly connected to the inner wall of the top plate 201 to facilitate the provision of temperature to the concrete and ensure accurate detection. A dry... The drying plate 205 mainly absorbs humidity to provide moisture and temperature for the lime box 204. The top of the outer wall of the outer plate 7 is provided with a telescopic component 207, which includes an inlay plate 2071, which facilitates the fixing of the lime box 204 and the dry refrigerator 203. The outer wall of the inlay plate 2071 is fixedly connected to the outer wall of the support plate 6. The inner wall of the inlay plate 2071 is provided with a placement groove 2072. The top of the outer wall of the inlay plate 2071 is fixedly connected with a rotating rod 2074, which facilitates the movement of the main box. The top of the outer wall of the rotating rod 2074 is fixedly connected with a micro motor 2073.

[0040] Reference Figure 1 , Figure 2 and Figure 6 The measuring mechanism 3 includes a positioning plate 306, which facilitates fixing the concrete position. The outer wall of the positioning plate 306 is fixedly connected to the outer wall of the fixing button 301. The outer wall of the fixing button 301 is fixedly connected to a rotating rod 302. The top of the outer wall of the rotating rod 302 is fixedly connected to a fixing nut 303, which facilitates the positioning plate 306 and the rotating rod 302 to realize concrete placement measurement. The top of the outer wall of the support plate 6 is fixedly connected to a measuring ruler 305, which is used to cooperate with the positioning plate 306 to position the concrete. The top of the outer wall of the support plate 6 is provided with an adjustment groove 304, which facilitates the sliding device.

[0041] Specifically, the measuring mechanism 3 includes a positioning plate 306, which facilitates fixing the concrete position. A fixing nut 303 is fixedly connected to the top of the outer wall of the rotating rod 302, which facilitates the positioning plate 306 and the rotating rod 302 to realize concrete placement measurement. A measuring ruler 305 is fixedly connected to the top of the outer wall of the support plate 6, which works with the positioning plate 306 to position the concrete. An adjustment groove 304 is opened on the top of the outer wall of the support plate 6 to facilitate the sliding device.

[0042] Reference Figure 1 , Figure 2 and Figure 5 A sliding plate 206 is fixedly connected to the outer wall of the drying plate 205. A handle 13 is fixedly connected to the outer wall of the drying plate 205 to facilitate the smooth pulling out of the drying plate 205. A thermometer 4 is fixedly connected to the top of the outer wall of the inlaid plate 2071, which is mainly used to observe the internal temperature. A sealing cover 5 is fixedly connected to the outer wall of the outer plate 7. A sliding groove 10 is opened on the right side of the outer wall of the outer plate 7 to allow the sliding plate 206 to slide up and down. An observation window 11 is fixedly connected to the outer wall of the outer plate 7 to facilitate the observation of the internal conditions. A stretching plate 12 is fixedly connected to the outer wall of the drying plate 205 to support the drying plate 205.

[0043] Specifically, a sliding plate 206 is fixedly connected to the outer wall of the drying plate 205, and a handle 13 is fixedly connected to the outer wall of the drying plate 205 to facilitate the smooth pulling out of the drying plate 205. A thermometer 4 is fixedly connected to the top of the outer wall of the inlaid plate 2071, which is mainly used to observe the internal temperature. A sealing cover 5 is fixedly connected to the outer wall of the outer plate 7. A sliding groove 10 is opened on the right side of the outer wall of the outer plate 7 to allow the sliding plate 206 to slide up and down. An observation window 11 is fixedly connected to the outer wall of the outer plate 7 to facilitate the observation of the internal conditions. A stretching plate 12 is fixedly connected to the outer wall of the drying plate 205.

[0044] Working principle: First, the control mechanism 2 embeds the dry refrigerator 203 and lime box 204 through the mounting plate 2071 to facilitate constant temperature and humidity of the concrete. Through the micro motor 2073 and the rotating rod 2074, the dry refrigerator 203 and lime box 204 slide up and down to control the temperature and humidity of the concrete. The thermometer 4 is responsible for detecting whether the internal temperature of the outer plate 7 reaches a test standard for the concrete. The internal drying plate 205 absorbs humidity to provide moisture to the lime and provide it with temperature, effectively maintaining the test quality of the concrete and significantly reducing the cost of the concrete.

[0045] Furthermore, when the concrete is placed on the pallet 6, the positioning plate 306 is moved closer to the concrete side and fixed in the designated position by rotating the fixing nut 303 to drive the rotating rod 302. When a second test is required, the concrete can be placed in the fixed position and the test can be completed in cooperation with the testing mechanism 8, thereby improving the accuracy of the data and increasing work efficiency.

[0046] 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 concrete shrinkage testing device comprising a base (1) characterised in that: The base (1) is fixedly connected to the outer wall of the support plate (6), the inner wall of the support plate (6) is provided with a measuring mechanism (3), the outer wall of the support plate (6) is fixedly connected to the outer plate (7), the outer wall of the outer plate (7) is provided with a closing mechanism (9), the top of the outer wall of the support plate (6) is provided with a detection mechanism (8), and the top of the outer wall of the outer plate (7) is provided with a control mechanism (2). The control mechanism (2) includes a dry refrigerator (203), the outer wall of which is fixedly connected to the inner wall of the top plate (201), the outer wall of the top plate (201) is fixedly connected to a side plate (202), the outer wall of the side plate (202) is fixedly connected to a sliding plate (206), the inner wall of the top plate (201) is fixedly connected to a lime box (204), the bottom of the outer wall of the lime box (204) is fixedly connected to a drying plate (205), and the top of the outer wall of the outer plate (7) is provided with a telescopic component (207).

2. A concrete shrinkage testing device according to claim 1, wherein: The measuring mechanism (3) includes a positioning plate (306), the outer wall of which is fixedly connected to the outer wall of a fixing button (301), a rotating rod (302) is fixedly connected to the outer wall of the fixing button (301), a fixing nut (303) is fixedly connected to the top of the outer wall of the rotating rod (302), a measuring ruler (305) is fixedly connected to the top of the outer wall of the support plate (6), and an adjustment groove (304) is provided on the top of the outer wall of the support plate (6).

3. The concrete shrinkage testing device of claim 1, wherein: The testing mechanism (8) includes a vertical calibration plate (803), the outer wall of which is fixedly connected to the outer wall of the calibration block (804), a vertical fixed plate (801) is fixedly connected to the top of the outer wall of the support plate (6), a fixing groove (802) is provided on the outer wall of the vertical fixed plate (801), a horizontal calibration rod (805) is fixedly connected to the outer wall of the vertical calibration plate (803), and a reading component (806) is provided at the top of the outer wall of the horizontal calibration rod (805).

4. The concrete shrinkage testing device of claim 1, wherein: The closing mechanism (9) includes a telescopic rod (901), the outer wall of which is fixedly connected to the outer wall of the limiting plate (902), and the outer wall of the outer plate (7) is fixedly connected to the limiting plate (902).

5. The concrete shrinkage testing device of claim 1, wherein: The telescopic component (207) includes an inlay plate (2071), the outer wall of which is fixedly connected to the outer wall of the support plate (6), the inner wall of which is provided with a placement groove (2072), a rotating rod (2074) is fixedly connected to the top of the outer wall of the inlay plate (2071), and a micro motor (2073) is fixedly connected to the top of the outer wall of the rotating rod (2074).

6. A concrete shrinkage testing device as claimed in claim 3, wherein: The reading assembly (806) includes a reading rod (8061), the top of which is fixedly connected to the outer wall of the dial indicator (8062).

7. A concrete shrinkage testing device as claimed in claim 5, wherein: A sliding plate (206) is fixedly connected to the outer wall of the drying plate (205), a handle (13) is fixedly connected to the outer wall of the drying plate (205), and a thermometer (4) is fixedly connected to the top of the outer wall of the inlay plate (2071).

8. The concrete shrinkage testing device of claim 1, wherein: The outer wall of the outer plate (7) is fixedly connected to a sealing cover (5), a sliding groove (10) is provided on the right side of the outer wall of the outer plate (7), an observation window (11) is fixedly connected to the outer wall of the outer plate (7), and a stretching plate (12) is fixedly connected to the outer wall of the drying plate (205).

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