A concrete permeability meter

Abstract

The utility model discloses a kind of concrete permeameter, to provide a kind of more durable, more convenient operation, the protective effect more reliable concrete permeameter, its technical solution main point is including permeameter body, test module and control panel and control valve being set on permeameter body, the permeameter body is equipped with several detection tables, the test module is equipped with with positioning protective device between detection table, the protective device includes the compression ring being fixed in the bottom outside of test module, several limit holes being set on compression ring, the fixed column corresponding with limit hole being set on detection table and at least two quick-release locking structures being set between detection table and compression ring. The utility model is applicable to concrete permeameter technical field.

Description

Technical Field

[0001] This utility model relates to the technical field of concrete permeability testing instruments, and more specifically, to a concrete permeability testing instrument. Background Technology

[0002] As the most widely used artificial stone in the construction industry, the performance of concrete directly affects the quality and safety of buildings. In specific construction scenarios such as hydraulic structures, underwater, submerged, and underground works, concrete must possess special properties, among which impermeability is particularly critical. Impermeability refers to a material's ability to resist the penetration of water or other liquids (such as light oil or heavy oil) under pressure. If the concrete's impermeability is poor, water and other liquids will seep into the interior through its pores or micro-cracks, causing a series of problems such as corrosion and structural damage, seriously affecting the durability and service life of the building.

[0003] In the prior art, for example, Chinese utility model patent application number CN202321096008.3 discloses a concrete permeability testing instrument, including a permeability testing instrument body. Support legs are fixedly connected to the four corners of the lower end of the instrument body. A control panel is fixedly connected to the right front end of the instrument body. Six control valves are fixedly connected to the upper front end of the instrument body. Six test molds are movably connected to the upper end of the instrument body. Protective devices are movably connected to the outer surfaces of the six test molds. The six test molds are evenly distributed. A dustproof device is fixedly connected to the upper rear end of the instrument body. The concrete permeability testing instrument of this utility model, through its protective devices, prevents dust and impacts from affecting and damaging the test molds.

[0004] The existing technical solutions described above have the following drawbacks: tightening or loosening two bolts is required for installing and disassembling each test mold, resulting in low efficiency when frequent operations are needed (such as cleaning or inspecting the test mold). Furthermore, relying solely on bolts on both sides for fixation means that the protective device may slightly wobble or even rotate around the bolt axis when subjected to accidental impacts or equipment vibrations, affecting the effective protection of the test mold and potentially causing the bolts to loosen. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a more durable, easier to operate and more reliable concrete impermeability tester.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a concrete permeability tester, comprising a tester body, a test mold, and a control panel and control valve disposed on the tester body. The tester body is provided with a plurality of testing platforms. A protective device with positioning is provided between the test mold and the testing platforms. The protective device includes a pressure ring fixed to the outer side of the bottom of the test mold, a plurality of limiting holes disposed on the pressure ring, a fixing column disposed on the testing platform corresponding to the limiting holes, and at least two quick-release locking structures disposed between the testing platform and the pressure ring.

[0007] The present invention is further configured such that: the quick-release locking structure includes a rotating support platform disposed on the outside of the inspection table, an eccentric locking wheel disposed on the upper end of the support platform and rotatably connected thereto, and an operating handle for controlling the rotation of the eccentric locking wheel. When the test mold is placed on the inspection table, the rotating platform is rotated so that the eccentric locking wheel is positioned above the pressure ring, and the operating handle is turned so that the eccentric locking wheel presses the test mold onto the inspection table.

[0008] The present invention is further configured such that: the testing platform is provided with a guide groove that is adapted to the bottom of the test mold.

[0009] The present invention is further configured such that: the permeability tester body is also provided with a dustproof device, the dustproof device comprising an upper baffle connected by a rotating shaft, a sealing block disposed on the bottom surface of the upper baffle and corresponding to the top of the test mold, a telescopic column fixed on one side of the permeability tester body, and an extension support disposed in the telescopic column and extending and retracting along the length direction.

[0010] The present invention is further configured such that the parallel four-bar linkage includes two sets of cross-hinged links, and the hinge points are provided with damping shafts.

[0011] The present invention is further configured such that: the upper end of the telescopic column is provided with a positioning groove, and the lower end of the extension column is provided with a protrusion that matches the positioning groove; when the extension column is pulled out to the working position, its lower end can be fixedly connected with the positioning groove.

[0012] The present invention is further provided with handles symmetrically provided on the outer side wall of the test mold.

[0013] The beneficial effects of this utility model are:

[0014] 1. The protective device, through the interlocking of the limiting holes on the pressure ring and the fixing posts on the testing platform, enables rapid and precise positioning of the test mold on the testing platform. This not only prevents the test mold from shifting due to misalignment during installation but also ensures the accurate relative position between the test mold and the testing platform, providing a stable foundation for subsequent impermeability testing. At least two quick-release locking mechanisms are installed between the testing platform and the pressure ring. When locking the test mold, uniform pressure is applied to the pressure ring from multiple positions, promoting a tight fit between the test mold and the testing platform. The quick-release locking mechanism design makes the installation and removal of the test mold simpler and faster, eliminating the need to repeatedly tighten multiple bolts and significantly reducing operation time.

[0015] 2. The quick-release locking structure adjusts the position of the eccentric locking wheel by rotating the support platform, and then rotates the eccentric locking wheel using the operating handle. The entire process requires no additional tools; the clamping and loosening of the test mold can be completed manually. Compared to the traditional bolt fixing method, this design significantly simplifies the operation steps and reduces the labor intensity of the testing personnel. Even beginners can quickly master the operating essentials. The structural characteristics of the eccentric locking wheel allow for continuous and uniform pressure to be applied to the pressure ring through eccentric action when the operating handle is turned. The testing personnel can adjust the locking force by controlling the amplitude of the operating handle's movement according to actual needs, ensuring that the tightness between the test mold and the testing platform meets the testing requirements. At the same time, this locking method effectively avoids poor sealing problems caused by uneven bolt tightening force, further ensuring the sealing and accuracy of the test.

[0016] 3. During the placement of the test mold onto the testing platform, the guide groove guides the mold, ensuring its stable placement along a preset trajectory and reducing placement deviations. Combined with the limiting holes on the pressure ring and the fixing columns of the testing platform, this creates a dual positioning guarantee, making the mold's positioning more precise. Simultaneously, the guide groove reduces the precision required for mold placement, allowing even less experienced personnel to quickly place the mold in the correct position, further improving installation efficiency. The upper baffle, connected by a pivot, can flexibly rotate to cover the test mold. Its bottom sealing block corresponds to the top of the mold, forming a good seal during coverage, preventing dust and impurities from falling into the mold or testing area, ensuring a clean testing environment, and avoiding the influence of impurities on the concrete specimen's impermeability test results, thus improving test accuracy. Furthermore, the extension column, installed within the telescopic column and extending and retracting along its length, allows for flexible adjustment of the upper baffle's position and height, accommodating test molds of different heights and enhancing the adaptability of the dustproof device. Meanwhile, the design of the parallel four-bar linkage and telescopic column makes the opening and closing of the upper baffle smoother and less strenuous, making it convenient for testers to pick up and put down test molds without affecting the normal test operation process.

[0017] 4. For the parallel four-bar linkage, the two sets of cross-hinged links, combined with the damping shaft at the hinge point, significantly improve the stability and controllability of the upper baffle adjustment process. The damping shaft provides appropriate resistance to the rotation of the links, allowing the upper baffle to remain stably in any position when opening or closing, preventing wobbling or movement due to slight external force. Testers can precisely adjust the angle and height of the upper baffle according to operational needs, ensuring it is stably fixed in a position that does not obstruct operation when loading and unloading test molds, and ensuring the upper baffle tightly covers the test molds during testing, guaranteeing a sealing effect and greatly improving operational convenience and reliability. Furthermore, the positioning groove at the upper end of the telescopic column cooperates with the protrusion at the lower end of the extension column, further enhancing the stability of the dustproof device in its working state. When the extension column is pulled out to the working position, the protrusion and the positioning groove form a fixed connection, effectively limiting the axial movement of the extension column and preventing accidental retraction due to vibration or collision during testing. This ensures the positional stability of the upper baffle under high-pressure testing conditions, avoids gaps between the sealing block and the top of the test mold, thus maintaining the effectiveness of dust prevention and sealing, and ensuring the cleanliness of the testing environment and the accuracy of the test results. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention in its open state;

[0019] Figure 2 This is a three-dimensional structural diagram of the present invention in its closed state;

[0020] Figure 3 This is a three-dimensional structural diagram of the permeameter body;

[0021] Figure 4 This is a schematic diagram of the three-dimensional structure of the prototype mold.

[0022] Figure 5 This is a magnified view of point A;

[0023] Figure 6 This is a magnified view of point B;

[0024] Figure 1-6 Reference numerals in the attached drawings: 1. Permeability tester body; 2. Test mold; 3. Control panel; 4. Control valve; 5. Testing platform; 6. Pressure ring; 7. Limiting hole; 8. Fixing column; 9. Rotating support platform; 10. Eccentric locking wheel; 11. Operating handle; 12. Guide groove; 13. Upper baffle; 14. Sealing block; 15. Positioning groove; 16. Protrusion; 17. Handle; 18. Telescopic column; 19. Extension support column. Detailed Implementation

[0025] Reference Figures 1 to 6 The embodiments of this utility model will be further described below.

[0026] For ease of explanation, spatial relative terms such as “up,” “down,” “left,” and “right” are used in the embodiments to describe the relationship of one element or feature shown in the figures relative to another element or feature. It should be understood that, in addition to the orientations shown in the figures, spatial terms are intended to include different orientations of the device in use or operation. For example, if the device in the figures is inverted, an element described as being “down” of other elements or features would be positioned “up” of those other elements or features. Therefore, the exemplary term “down” can encompass both up and down orientations. The device may be positioned in other ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0027] Moreover, relational terms such as “first” and “second” are used merely to distinguish one component from another that has the same name, without necessarily requiring or implying any such actual relationship or order between the components.

[0028] Figures 1 to 6 The concrete permeability tester shown includes a tester body 1, a test mold 2, and a control panel 3 and a control valve 4 mounted on the tester body 1. The tester body 1 has several testing platforms 5. A positioning protective device is provided between the test mold 2 and the testing platforms 5. The protective device includes a pressure ring 6 fixed to the outer bottom of the test mold 2, several limiting holes 7 on the pressure ring 6, fixing posts 8 on the testing platforms 5 corresponding to the limiting holes 7, and at least two quick-release locking structures between the testing platforms 5 and the pressure ring 6. The protective device, through the cooperation of the limiting holes 7 on the pressure ring 6 and the fixing posts 8 on the testing platforms 5, can quickly and accurately position the test mold 2 on the testing platforms 5. This not only avoids the offset of the test mold 2 due to misalignment during installation but also ensures the accurate relative position between the test mold 2 and the testing platforms 5, providing a stable foundation for subsequent permeability testing. At least two quick-release locking mechanisms are installed between the testing table 5 and the pressure ring 6. When the test mold 2 is locked in place, uniform pressure is applied to the pressure ring 6 from multiple positions, ensuring a tight fit between the test mold 2 and the testing table 5. The quick-release locking mechanism design makes the installation and removal of the test mold 2 simpler and faster, eliminating the need to repeatedly tighten multiple bolts and greatly reducing operation time.

[0029] The quick-release locking structure includes a rotating support platform 9 located on the outside of the inspection table, an eccentric locking wheel 10 located at the upper end of the support platform and rotatably connected, and an operating handle 11 for controlling the rotation of the eccentric locking wheel 10. The quick-release locking structure adjusts the position of the eccentric locking wheel 10 by rotating the support platform 9, and then rotates the eccentric locking wheel 10 using the operating handle 11. The entire process requires no additional tools; the clamping and loosening of the test mold 2 can be completed manually. Compared to the traditional bolt fixing method, this design significantly simplifies the operation steps and reduces the labor intensity of the testing personnel. Even beginners can quickly master the operating techniques. The structural characteristics of the eccentric locking wheel 10 allow for continuous and uniform pressure to be applied to the pressure ring 6 through eccentric action when the operating handle 11 is turned. The testing personnel can adjust the locking force by controlling the amplitude of the turning of the operating handle 11 according to actual needs, ensuring that the tightness of the fit between the test mold 2 and the inspection table 5 meets the testing requirements. At the same time, this locking method can effectively avoid poor sealing caused by uneven bolt tightening force, further ensuring the sealing performance and accuracy of the test.

[0030] The testing platform 5 is equipped with a guide groove 12 that matches the bottom of the test mold 2. During the placement of the test mold 2 onto the testing platform 5, the guide groove 12 guides the test mold 2, ensuring it is placed smoothly along a preset trajectory and reducing placement deviations. Combined with the limiting hole 7 on the pressure ring 6 and the fixing post 8 of the testing platform 5, this forms a dual positioning guarantee, making the positioning of the test mold 2 more accurate. Simultaneously, the presence of the guide groove 12 reduces the precision required for placing the test mold 2, allowing even less experienced personnel to quickly place the test mold 2 in the correct position, further improving installation efficiency.

[0031] The permeability tester body 1 is also equipped with a dustproof device. This dustproof device includes an upper baffle 13 connected by a rotating shaft, a sealing block 14 located on the bottom surface of the upper baffle 13 and corresponding to the top of the test mold 2, and an extension support 19 hinged to the telescopic column 18 via a parallel four-bar linkage. The upper baffle 13, connected by a rotating shaft, can flexibly rotate to cover the test mold 2. The sealing block 14 on its bottom surface corresponds to the top of the test mold 2, forming a good seal when covering, preventing dust and impurities from falling into the test mold 2 or the test area, ensuring the cleanliness of the test environment, avoiding the influence of impurities on the permeability test results of the concrete specimen, and improving the accuracy of the test. Furthermore, the extension support 19, located inside the telescopic column 18 and extending and retracting along its length, can flexibly adjust the position and height of the upper baffle 13, allowing it to adapt to test molds 2 of different heights, enhancing the adaptability of the dustproof device. Meanwhile, the design of the parallel four-bar linkage and the telescopic column 18 makes the opening and closing of the upper baffle 13 smoother and less strenuous, making it convenient for testers to pick up and put down the test mold 2 without affecting the normal operation of the test.

[0032] The parallel four-bar linkage includes two sets of cross-hinged links, with damping shafts at the hinge points. This significantly improves the stability and controllability of the upper baffle 13 adjustment process. The damping shafts provide appropriate resistance to the rotation of the links, allowing the upper baffle 13 to remain stably in any position when opened or closed, preventing it from shaking or moving on its own due to slight external contact. Testers can precisely adjust the angle and height of the upper baffle 13 according to operational needs, ensuring it is stably fixed in a position that does not obstruct operation when placing or removing the test mold 2, and ensuring that the upper baffle 13 tightly covers the test mold 2 during testing, guaranteeing a sealing effect and greatly improving operational convenience and reliability.

[0033] The telescopic column 18 has a positioning groove 15 at its upper end, and the extension column 19 has a protrusion 16 at its lower end that matches the positioning groove 15. This further enhances the stability of the dustproof device in operation. When the extension column 19 is pulled out to the working position, the protrusion 16 and the positioning groove 15 form a fixed connection, which effectively restricts the axial movement of the extension column 19 and prevents it from accidentally retracting due to vibration or collision during the test. This ensures the positional stability of the upper baffle 13 under high-pressure testing conditions, avoids gaps between the sealing block 14 and the top of the test mold 2, thereby maintaining the effectiveness of dustproofing and sealing, and ensuring the cleanliness of the testing environment and the accuracy of the test results.

[0034] Handles 17 are symmetrically provided on the outer wall of the test mold 2. During the mold installation stage of concrete impermeability testing, the operator needs to accurately install the test mold containing the concrete test block onto the pressure seat of the impermeability tester. The handles 17 provide a stable fulcrum for gripping, making it easy for the operator to stably control the position and angle of the test mold, ensuring that the sealing surface of the test mold and the pressure seat are accurately aligned, avoiding the problem of poor sealing caused by installation misalignment, thereby ensuring that pressurized water will not leak from the gaps during the impermeability test and improving the accuracy of the test data.

[0035] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any ordinary changes and substitutions made by those skilled in the art within the scope of the technical solution of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A concrete permeability tester, comprising a tester body (1), a test mold (2), and a control panel (3) and a control valve (4) disposed on the tester body (1), characterized in that, The permeability tester body (1) is provided with several test platforms (5), and a protective device with positioning is provided between the test mold (2) and the test platform (5). The protective device includes a pressure ring (6) fixed on the outer side of the bottom of the test mold (2), several limiting holes (7) provided on the pressure ring (6), a fixing column (8) provided on the test platform (5) corresponding to the limiting holes (7), and at least two quick-release locking structures provided between the test platform (5) and the pressure ring (6).

2. The concrete permeability tester according to claim 1, characterized in that, The quick-release locking structure includes a rotating support platform (9) located on the outside of the inspection table, an eccentric locking wheel (10) located on the upper end of the support platform and rotatably connected, and an operating handle (11) for controlling the rotation of the eccentric locking wheel (10). When the test mold (2) is placed on the inspection table (5), the rotating platform is rotated so that the eccentric locking wheel (10) is located above the pressure ring (6). The operating handle (11) is then turned so that the eccentric locking wheel (10) presses the test mold (2) onto the inspection table (5).

3. A concrete permeability meter according to claim 1, characterized in that, The testing platform (5) is provided with a guide groove (12) that matches the bottom of the test mold (2).

4. A concrete permeability tester according to claim 1, characterized in that, The permeability tester body (1) is also provided with a dustproof device, which includes an upper baffle (13) connected by a rotating shaft, a sealing block (14) set on the bottom surface of the upper baffle (13) and corresponding to the top of the test mold (2), a telescopic column (18) fixed on one side of the permeability tester body (1), and an extension support (19) set in the telescopic column (18) and moving in and out along the length direction.

5. A concrete permeability tester according to claim 4, characterized in that, The parallel four-bar linkage includes two sets of cross-hinged links, and the hinge points are equipped with damping shafts.

6. A concrete permeability tester according to claim 4, characterized in that, The telescopic column (18) has a positioning groove (15) at its upper end, and the extension column (19) has a protrusion (16) at its lower end that matches the positioning groove (15). When the extension column (19) is pulled out to the working position, its lower end can be fixedly connected with the positioning groove (15).

7. A concrete permeability tester according to claim 1, characterized in that, The test mold (2) has handles (17) symmetrically arranged on its outer side wall.

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