Concrete permeability meter

Abstract

This utility model belongs to the technical field of concrete testing equipment, specifically a concrete permeability analyzer. It includes a main body with two symmetrically fixed storage mechanisms. Two sets of test mold seats are installed on the main body. A positioning ring 4 is fixedly connected to the top of each test mold seat. A clamping mechanism is engaged within the positioning ring 4. The clamping mechanism includes a locking block 504 and a pressure ring 505. Several locking blocks 504 are engaged within the positioning ring 4, and a pressure ring 505 is fixedly connected to each locking block 504. A handle 5 is fixedly installed on the pressure ring 505. 02. The top of the locking block 504 is provided with a positioning hole 506, and the top of the positioning ring 4 is fixed with a protrusion 503. The protrusion 503, the positioning ring 4 and the locking block 504 are fitted with an insert rod 501. The locking block 504 and the positioning ring 4 are engaged and locked together with the insert rod 501 that passes through the protrusion 503, the positioning ring 4 and the locking block 504. This can quickly achieve the pressing and fixing of the pressure ring 505 on the specimen. After locking, it is not easy to loosen. It can avoid gaps between the specimen and the mold base during high pressure testing and ensure the accuracy of the impermeability test.

Description

Technical Field

[0001] This utility model belongs to the technical field of concrete testing equipment, specifically a concrete permeability meter. Background Technology

[0002] In fields such as building construction, road and bridge construction, and water conservancy and hydropower, the impermeability of concrete directly determines the durability and service life of the structure. Especially in underground engineering, roof waterproofing, and hydraulic structures, insufficient impermeability can lead to water seepage causing problems such as steel reinforcement corrosion, concrete cracking, and reduced strength, seriously affecting project safety. Therefore, concrete impermeability testing is a core aspect of project quality control, and the performance of a concrete permeability meter, as a specialized testing device, directly affects the accuracy and reliability of the test data.

[0003] However, the fixation of the mold base and the specimen in the permeability tester often relies on bolt tightening, which is cumbersome and time-consuming; or a simple snap-fit ​​structure, in which case the specimen is prone to displacement or loosening due to water pressure impact during high-pressure testing, which may lead to water leakage from the gap between the specimen and the mold base, forming a false leakage phenomenon, which can easily interfere with the judgment of test results.

[0004] Therefore, a permeability tester is needed that can ensure rapid specimen installation and reliable testing. Utility Model Content

[0005] Based on this, this solution provides a concrete permeability tester. The locking mechanism between the locking block and the positioning ring, along with the locking rod that penetrates the protrusion, positioning ring, and locking block, can quickly and firmly fix the pressure ring on the specimen. Once locked, it is not easy to loosen, which can effectively prevent gaps between the specimen and the mold base during high-pressure testing and ensure the accuracy of the permeability test.

[0006] The technical solution of this utility model to solve the above-mentioned technical problems is as follows:

[0007] A concrete permeability tester includes a main body with two symmetrically fixed storage mechanisms. Two sets of test mold seats are mounted on the main body. A positioning ring is fixedly connected to the top of each test mold seat. A clamping mechanism is engaged within the positioning ring. The clamping mechanism includes a locking block and a pressure ring. Several locking blocks are engaged within the positioning ring. A pressure ring is fixedly connected to each locking block, and a handle is fixedly mounted on each pressure ring. A positioning hole is provided at the top of each locking block. A protrusion is fixed to the top of the positioning ring. An insert rod is engaged within the protrusion, positioning ring, and locking blocks.

[0008] Optionally, in one embodiment of the present invention, the insertion rod penetrates the inner wall of the protrusion, the positioning ring, and the locking block, and the diameter of the top end of the insertion rod is greater than the diameter of the bottom end of the insertion rod.

[0009] Optionally, in one embodiment of the present invention, the positioning ring is provided with a plurality of slots at equal intervals in a ring shape, and a locking block is rotatably installed in the slot, wherein the arc length of the top of the slot is smaller than the arc length of the bottom of the slot.

[0010] Optionally, in one embodiment of the present invention, the pressure ring and the positioning ring are rotatably connected, and the inner diameter of the positioning ring is equal to the diameter of the pressure ring.

[0011] Optionally, in one embodiment of the present invention, the thickness of the card block is equal to the minimum height of the card slot, and the part of the positioning ring that contacts the card block is provided with an arc surface structure.

[0012] Optionally, in one embodiment of the present invention, the storage mechanism includes a fixed frame and a storage slot. Two fixed frames are symmetrically installed on the main body of the anti-permeability instrument, and a plurality of storage slots are provided at equal intervals within the fixed frames.

[0013] Optionally, in one embodiment of the present invention, the storage mechanism further includes a groove, the fixed frame is provided with a groove near the center of the storage slot, and a gasket is adhered to the fixed frame near the groove.

[0014] Optionally, in one embodiment of the present invention, the fixed frame near the groove and the gasket are both U-shaped, and a handle is fitted into the groove.

[0015] Compared with the prior art, the concrete permeability tester provided by this utility model has the following characteristics:

[0016] The positioning ring is fixedly connected to the mold base, and the locking block engages inside the positioning ring. The inner diameter of the pressure ring is equal to that of the positioning ring, which can precisely limit the concrete specimen to the center of the mold base, preventing the specimen from shifting during testing and ensuring that the water pressure is applied evenly to the end face of the specimen. Through the engagement of the locking block and the positioning ring, and with the locking rod that passes through the protrusion, positioning ring, and locking block, the pressure ring can be quickly and firmly fixed to the specimen. The diameter of the top end of the rod is larger than that of the bottom end, making it less prone to loosening after locking. This can prevent gaps between the specimen and the mold base during high-pressure testing and ensure the accuracy of the impermeability test. The pressure ring is equipped with a handle for easy rotation by the operator to control the engagement and disengagement of the locking block. Locking and unlocking can be completed by inserting or removing the rod. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1This is a schematic diagram of the overall structure of Embodiment 1 of the present invention;

[0019] Figure 2 for Figure 1 The diagram shows an enlarged view of the structure of region A.

[0020] Figure 3 This is a schematic diagram of the connection structure between the mold base and the positioning ring in Embodiment 1 of this utility model;

[0021] Figure 4 for Figure 3 The diagram shows an enlarged view of the structure of region B.

[0022] Figure 5 This is a schematic diagram of the connection structure between the main body of the permeability tester and the positioning ring in Embodiment 1 of this utility model.

[0023] Reference numerals in the attached drawings: 1. Main body of the permeability tester; 2. Storage mechanism; 201. Fixing frame; 202. Storage groove; 203. Groove; 204. Gasket; 3. Test mold base; 4. Positioning ring; 5. Pressing mechanism; 5. Insert rod; 501. Handle; 502. Protrusion; 503. Locking block; 504. Pressure ring; 505. Positioning hole; 506. Slot; 6. Detailed Implementation

[0024] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments of the present invention can be combined with each other. The technical solutions of the present invention will be further described below with reference to the accompanying drawings of the embodiments. The present invention is not limited to the specific embodiments described below.

[0025] It should be understood that the same or similar reference numerals in the accompanying drawings of the embodiments correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "front," "rear," "left," "right," "top," and "bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms describing positional relationships in the accompanying drawings are for illustrative purposes only and should not be construed as limiting this patent. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0026] Example 1

[0027] To facilitate rapid specimen installation during testing and ensure successful testing, a concrete permeability analyzer was designed for quick specimen installation. The specific design is as follows:

[0028] like Figure 1-5As shown, the concrete permeability tester includes a main body 1, with two symmetrically fixed storage mechanisms 2 on the main body 1. Two sets of test mold seats 3 are installed on the main body 1. A positioning ring 4 is fixedly connected to the top of each test mold seat 3. A clamping mechanism 5 is engaged within the positioning ring 4. The clamping mechanism 5 includes a locking block 504 and a pressure ring 505. Several locking blocks 504 are engaged within the positioning ring 4, and the pressure ring 505 is fixedly connected to each locking block 504. A handle 502 is fixedly installed on the pressure ring 505. A positioning hole 506 is provided on the top of each locking block 504. The pressure ring 505, along with the locking blocks 504, is placed into the positioning ring 4. The locking blocks 504 are aligned with the slots 6. The pressure ring 505 is rotated clockwise, causing the locking blocks 504 to rotate within the slots 6 until the locking blocks 504 are fully engaged at the bottom of the slots 6 and aligned with the positioning hole 506. The inner wall of ring 4 abuts against each other, thus preventing the pressure ring 505 from easily falling off after the locking block 504 is engaged. A protrusion 503 is fixed to the top of the positioning ring 4. An insert rod 501 is engaged and installed inside the protrusion 503, positioning ring 4, and locking block 504. The insert rod 501 passes through the inner wall of the protrusion 503, positioning ring 4, and locking block 504, and the diameter of the top end of the insert rod 501 is larger than the diameter of the bottom end of the insert rod 501. The insert rod 501 is picked up and inserted into the protrusion 503 fixed to the top of the positioning ring 4. The smaller diameter end of the insert rod 501 passes through the protrusion 503, positioning ring 4, and positioning hole 506 in sequence. After the insert rod 501 is inserted, it automatically limits the locking block 504, which can prevent the locking block 504 from moving inside the positioning ring 4 during the test, ensuring that the specimen is tightly pressed on the mold base 3 and avoiding water leakage from the gap between the specimen and the mold base 3 during high-pressure testing.

[0029] The positioning ring 4 has several equally spaced slots 6 arranged in a ring shape. A locking block 504 is rotatably installed in the slot 6. The arc length of the top of the slot 6 is less than the arc length of the bottom of the slot 6. The pressure ring 505 is rotatably connected to the positioning ring 4. The water pressure system of the main body 1 of the anti-permeability instrument is turned off. After the internal pressure drops to normal pressure, the power is disconnected. Then, the insertion rod 501 is pulled out and the handle 502 is rotated counterclockwise to disengage the locking block 504 from the slot 6, making it easy to remove the pressure ring 505. The inner diameter of the positioning ring 4 is equal to the diameter of the pressure ring 505. The thickness of the locking block 504 is equal to the minimum height of the slot 6. The part of the positioning ring 4 that contacts the locking block 504 has an arc surface structure.

[0030] The storage mechanism 2 includes a fixed frame 201 and a storage slot 202. Two fixed frames 201 are symmetrically installed on the main body 1 of the permeability tester. Several storage slots 202 are equidistantly arranged in the fixed frame 201. A groove 203 is provided in the part of the fixed frame 201 near the center of the storage slot 202. When the handle 502 is held and the pressure ring 505 is moved upward, the handle 502 moves out of the groove 203, making it easy for the operator to take the pressure ring 505 out of the storage slot 202. A gasket 204 is glued to the part of the fixed frame 201 near the groove 203. Both the part of the fixed frame 201 near the groove 203 and the gasket 204 are U-shaped. The handle 502 is engaged in the groove 203.

[0031] Instructions for use:

[0032] First, place the concrete specimen to be tested smoothly into the center of the mold base 3, ensuring that the end face of the specimen is in contact with the sealing surface inside the mold base 3. Then, holding the handle 502, move the pressure ring 505 upwards. The handle 502 will move out of the groove 203, making it easy to remove the pressure ring 505 from the receiving groove 202. Next, place the pressure ring 505 along with the locking block 504 into the positioning ring 4, aligning the locking block 504 with the slot 6. Rotate the pressure ring 505 clockwise. The pressure ring 505 will drive the locking block 504 to rotate in the slot 6 until the locking block 504 is fully engaged at the bottom of the slot 6 and contacts the inner wall of the positioning ring 4, thus making it less likely for the pressure ring 505 to fall off after the locking block 504 is engaged. The top of each of the two locking blocks 504 is provided with a positioning hole 506. After the locking block 504 engages with the positioning ring 4, the positioning hole 506 communicates with the through hole in the protrusion 503. Then, the insert rod 501 is inserted from the protrusion 503 fixed on the top of the positioning ring 4. The smaller diameter end of the insert rod 501 passes through the positioning hole 506 on the protrusion 503, the positioning ring 4 and the locking block 504 in sequence. After the insert rod 501 is inserted, it automatically limits the locking block 504, which can prevent the locking block 504 from moving in the positioning ring 4 during the test, ensuring that the specimen is tightly pressed on the mold base 3 and preventing water from leaking from the gap between the specimen and the mold base 3 during high-pressure testing. Repeat the above steps to complete the installation of the specimen on the two sets of mold bases 3.

[0033] Close the power supply and turn on the water system. Set the water pressure parameters according to the test specifications to ensure that high-pressure water is evenly delivered to the test mold 3 and applied to the end face of the specimen. During the maintenance time of each water pressure level, periodically observe whether there is any water seepage on the end face of the specimen. If any abnormality occurs, the test should be suspended and the problem investigated. If there is no water seepage after the specimen has maintained the specified time at a certain water pressure level, it indicates that the concrete can resist that level of water pressure. Continue to increase the pressure to the next level according to the set gradient. If there is obvious water seepage on the end face of the specimen at a certain water pressure level, stop increasing the pressure immediately. The level before this water pressure level is the permeability grade of the specimen. If there is still no water seepage at the preset maximum water pressure, it can be determined that its permeability grade is not lower than the highest grade and meets the test requirements.

[0034] After the test, first turn off the water pressure system. After the internal pressure drops to normal pressure, disconnect the power. Then pull out the plug rod 501 and turn the handle 502 counterclockwise to disengage the locking block 504 from the slot 6. Then take out the pressure ring 505 and remove the test specimen. Clean the sealing surfaces of the mold base 3 and the positioning ring 4 to remove any residual impurities. Put the plug rod 501 back into the storage slot 202. The handle 502 on the pressure ring 505 can be engaged in the groove 203. The U-shaped gasket 204 fits against the handle 502 to prevent the pressure ring 505 from shaking in the fixed frame 201, thus completing the part's return to its original position for easy access during the next test.

[0035] In this concrete permeability tester, the clamping mechanism utilizes the cooperation between the clamping block 504 and the clamping groove 6. By rotating the pressure ring 505 clockwise, the clamping block 504 can be inserted into the bottom of the clamping groove 6 and abut against the inner wall of the positioning ring, forming a firm locking connection. This ensures that the pressure ring 505 will not easily loosen or fall off during the test, resists the impact force generated by high-pressure water, and ensures the sealing between the specimen and the mold base. The arc length of the top of the clamping groove 6 is smaller than the arc length of the bottom, so that the clamping block 504 gradually locks during rotation, increasing the contact area and friction, and enhancing the uniform distribution of the clamping force.

[0036] The insertion rod 501, through which the protrusion 503, positioning ring 4, and positioning hole 506 are inserted, automatically limits the position of the locking block 504. The diameter of the top end of the insertion rod 501 is larger than that of the bottom end, which can prevent the locking block 504 from moving within the positioning ring 4 during testing, ensuring that the specimen is tightly pressed onto the mold base, avoiding water leakage from the gap between the specimen and the mold base during high-pressure testing, and improving the accuracy and reliability of the test data.

[0037] A handle 502 is provided on the pressure ring 505, which works in conjunction with the groove 203. The groove 203 and the U-shaped pad prevent the parts from shaking, making them easy to pick up and put down, reducing the risk of parts being lost or damaged. Operators can easily pick up and store the clamping mechanism. The part where the positioning ring 4 contacts the locking block 504 has an arc surface structure, which reduces wear and extends the life of the parts.

[0038] Example 2

[0039] In this embodiment, the structure of the permeability tester is basically the same as that in Embodiment 1. The difference is that it consists of a pressure plate with a central opening and a shell with an adaptive inclined surface on the outer side wall. The clamping arm replaces the original pressure ring 505 and handle 502. A high-performance sealing ring is embedded inside the pressure plate to ensure a seal with the end face of the specimen. The pressure plate is supported on the clamping arm by a compression spring to form a floating structure, so as to adapt to the uneven parts of different specimen surfaces and ensure uniform pressure distribution.

[0040] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A concrete permeability meter, comprising a main body of the meter, characterized in that: The main body of the permeability tester has two symmetrically fixed storage mechanisms. Two sets of test mold seats are installed on the main body of the permeability tester. A positioning ring is fixedly connected to the top of the test mold seat. A clamping mechanism is engaged and installed inside the positioning ring. The clamping mechanism includes a clamping block and a pressure ring. Several clamping blocks are engaged and installed inside the positioning ring. A pressure ring is fixedly connected to the clamping block. A handle is fixedly installed on the pressure ring. The top of the clamping block is provided with a positioning hole. The top of the positioning ring is fixed with a protrusion. An insert rod is engaged and installed inside the protrusion, the positioning ring, and the clamping block.

2. The concrete permeability tester according to claim 1, characterized in that: The insertion rod penetrates the inner wall of the protrusion, positioning ring, and locking block, and the diameter of the top end of the insertion rod is greater than the diameter of the bottom end of the insertion rod.

3. The concrete permeability tester according to claim 1, characterized in that: The positioning ring has several slots arranged in a ring shape at equal intervals. A locking block is rotatably installed in each slot. The arc length of the top of the slot is smaller than the arc length of the bottom of the slot.

4. The concrete permeability tester according to claim 1, characterized in that: The pressure ring and the positioning ring are rotatably connected, and the inner diameter of the positioning ring is equal to the diameter of the pressure ring.

5. The concrete permeability tester according to claim 1, characterized in that: The thickness of the card block is equal to the minimum height of the card slot, and the part of the positioning ring that contacts the card block has an arc-shaped structure.

6. The concrete permeability tester according to claim 1, characterized in that: The storage mechanism includes a fixed frame and a storage slot. Two fixed frames are symmetrically installed on the main body of the anti-permeability instrument, and several storage slots are equidistantly arranged in the fixed frame.

7. The concrete permeability tester according to claim 6, characterized in that: The storage mechanism also includes a groove, and the fixed frame is provided with a groove near the center of the storage slot, and a gasket is adhered to the fixed frame near the groove.

8. The concrete permeability tester according to claim 7, characterized in that: The fixed frame near the groove and the gasket are both U-shaped, and a handle is fitted into the groove.

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