Device for detecting the effect of concrete structure crack repair

Abstract

This utility model discloses a device for testing the repair effect of cracks in concrete structures, including an upper cylinder, a lower cylinder, and a concrete specimen. The outer walls of the upper and lower cylinders on the same side are connected by a hinge. A screw is internally threaded to the top of the upper cylinder, and a frame is movably connected to the bottom of the screw. A pressure ring is provided at the bottom of the frame. A water inlet is provided at the top of the upper cylinder, and a pressure ring is provided inside the bottom of the lower cylinder. The concrete specimen is arranged between the pressure ring and the pressure ring. In this utility model, the nut rotates within the second lug, allowing the bolt to loosen slightly on the nut. The nut then drives the bolt to rotate, moving the bolt away from the first lug and releasing the locking effect between the upper and lower cylinders. Furthermore, the hinge allows the upper cylinder to rotate on the lower cylinder, facilitating the opening and closing of the testing device, the removal and placement of the concrete specimen, and improving testing efficiency.

Description

Technical Field

[0001] This utility model relates to the field of detection device technology, and in particular to a device for detecting the effect of crack repair in concrete structures. Background Technology

[0002] Utility model publication CN206161476U discloses a device for microbial repair of concrete cracks and a permeability testing device, comprising a test cylinder, an upper end cap, and a lower end cap; a flange II is provided at the upper end of the test cylinder, and a flange III is provided at the lower end of the test cylinder, the inner diameter of flange III being smaller than the cross-sectional diameter of the concrete specimen placed inside the test cylinder; a flange I is provided at the lower end of the upper end cap, flange I being connected to flange II by bolt I; a water valve I and a permeability observation pipe are provided on the upper end cap; a flange IV is provided at the upper end of the lower end cap, flange IV being connected to flange III by bolt II; a water valve II and an overflow pipe are provided on the lower end cap, the inlet of the overflow pipe being connected to the bottom of the lower end cap, and the outlet of the overflow pipe being higher than the lower edge of the concrete specimen; a water valve III is provided at the outlet of the overflow pipe. This utility model uses microbial induced calcium carbonate deposition (MICP) technology to repair concrete cracks and can perform permeability testing on the concrete during and after the repair process at any time.

[0003] The existing technology tests the permeability of cracked areas by placing concrete specimens inside the device. However, in actual use, the device requires the cooperation of multiple bolts and nuts, making it inconvenient to open and close. This makes it difficult to put in and take out concrete specimens, affecting the testing efficiency. Therefore, there is a need for a device to test the repair effect of concrete structure cracks to meet people's needs. Utility Model Content

[0004] The purpose of this invention is to provide a device for detecting the repair effect of cracks in concrete structures, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a device for detecting the repair effect of cracks in concrete structures, comprising an upper cylinder, a lower cylinder, and a concrete specimen. The outer walls of the upper and lower cylinders on the same side are connected by a hinge. A screw is internally threaded to the top of the upper cylinder, and a frame is movably connected to the bottom of the screw. A pressure ring is provided at the bottom of the frame. A water inlet is provided at the top of the upper cylinder. A pressure ring is provided inside the bottom of the lower cylinder. The concrete specimen is arranged between the pressure ring and the pressure ring. A first lug is provided on one side of the upper cylinder, and a second lug is provided on the same side of the lower cylinder. A nut is rotatably connected inside the second lug, and a bolt is internally threaded to the nut. The threaded section of the bolt is fitted into the first lug, and the nut section of the bolt is arranged above the first lug.

[0006] Preferably, a bellows protective sleeve is provided between the inner wall of the top of the upper cylinder and the frame, and the bellows protective sleeve is arranged on the outer wall of the screw.

[0007] Preferably, a connecting shaft is rotatably connected to the top of the frame, the connecting shaft has a T-shaped cross-section, and the connecting shaft is connected to the bottom end of the screw.

[0008] Preferably, a first sealing ring is embedded in the outer wall of the pressure ring, and the first sealing ring is in contact with the inner wall of the upper cylinder.

[0009] Preferably, a second sealing ring is fitted into the bottom end of the pressure ring and the top end of the bearing ring, and the two second sealing rings are in contact with the top and bottom ends of the concrete specimen, respectively.

[0010] Preferably, a third sealing ring is embedded in the contact surface between the upper cylinder and the lower cylinder.

[0011] Preferably, a support shaft is provided on both sides of the nut, and both support shafts are rotatably connected inside the second lug.

[0012] The beneficial effects of this utility model are:

[0013] In this invention, the nut rotates within the second lug, causing the bolt to loosen slightly on the nut. The nut then drives the bolt to rotate, distancing the bolt from the first lug and releasing the locking effect between the upper and lower cylinders. Furthermore, the hinge allows the upper cylinder to rotate on the lower cylinder, facilitating the opening and closing of the testing device, making it easier to remove and place concrete specimens, and improving testing efficiency.

[0014] In this invention, the rotation of the screw enables the frame to press down the pressure ring, thereby fixing the concrete specimen onto the pressure ring. This provides a sealed environment for the permeability testing of cracks, while ensuring the stability of the concrete specimen and guaranteeing the smooth progress of the test. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the device for detecting the repair effect of cracks in concrete structures proposed in this utility model.

[0016] Figure 2 This is a front cross-sectional structural diagram of the device for detecting the repair effect of cracks in concrete structures proposed in this utility model.

[0017] Figure 3 The present invention provides a device for detecting the repair effect of cracks in concrete structures. Figure 2 Enlarged structural diagram at point A in the middle;

[0018] Figure 4This is a side view sectional view of the support shaft of the device for detecting the repair effect of cracks in concrete structures proposed in this utility model.

[0019] In the diagram: 1. Upper cylinder; 2. Lower cylinder; 3. Concrete specimen; 4. Hinge; 5. Screw; 6. Frame; 7. Pressure ring; 8. Water inlet; 9. Pressure bearing ring; 10. First lug; 11. Second lug; 12. Nut; 13. Bolt; 14. Bellows protective sleeve; 15. Connecting shaft; 16. First sealing ring; 17. Second sealing ring; 18. Third sealing ring; 19. Support shaft. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] Reference Figure 1-4 A device for testing the repair effect of cracks in concrete structures includes an upper cylinder 1, a lower cylinder 2, and a concrete specimen 3. The outer walls of the upper cylinder 1 and the lower cylinder 2 on the same side are connected by a hinge 4. A screw 5 is internally threaded to the top of the upper cylinder 1, and a frame 6 is movably connected to the bottom of the screw 5. A pressure ring 7 is provided at the bottom of the frame 6. A water inlet 8 is provided at the top of the upper cylinder 1, and a pressure ring 9 is provided inside the bottom of the lower cylinder 2. The concrete specimen 3 is arranged between the pressure ring 7 and the pressure ring 9. A first lug 10 is provided on one side of the upper cylinder 1, and a second lug 11 is provided on the same side of the lower cylinder 2. A nut 12 is rotatably connected inside the second lug 11, and a bolt 13 is internally threaded to the nut 12. The threaded section of the bolt 13 is fitted into the first lug 10, and the nut section of the bolt 13 is arranged above the first lug 10.

[0022] The repaired concrete structure was extracted using a core extractor and used as concrete specimen 3. Specimen 3 was placed inside the lower cylinder 2. The bottom of specimen 3 was supported by the bearing ring 9. The upper cylinder 1 was rotated, causing it to merge with the lower cylinder 2. The nut 12 was rotated, causing bolt 13 to rotate with it. The threaded section of bolt 13 was embedded in the first lug 10, while the nut section was positioned above the lug 10. Using a tool, bolt 13 was tightened within the nut 12, improving the connection between the upper and lower cylinders. The screw 5 was rotated, causing the frame 6 to drive the pressure ring 7. The pressure ring 7 presses the concrete specimen 3 onto the bearing ring 9, thus providing a sealed space for the crack repair area on the concrete specimen 3. Water is injected from the water inlet 8, and a section of the specimen is left to stand. The bottom of the lower cylinder 2 is observed for leakage. If leakage occurs, the crack repair effect is poor; if no leakage occurs, the crack repair effect is good. The rotation of the nut 12 in the second lug 11 and the connection effect of the hinge 4 make the opening and closing between the upper cylinder 1 and the lower cylinder 2 more convenient and quick, thereby facilitating the placement and removal of the concrete specimen 3 and improving the testing efficiency.

[0023] Specifically, in this embodiment, a bellows protective sleeve 14 is provided between the inner wall of the top of the upper cylinder 1 and the frame 6. The bellows protective sleeve 14 is arranged on the outer wall of the screw 5 to ensure the lifting effect of the frame 6 and at the same time to provide protection for the screw 5 to prevent corrosion.

[0024] Specifically, in this embodiment, a connecting shaft 15 is rotatably connected to the top of the frame 6. The cross-section of the connecting shaft 15 is T-shaped. The connecting shaft 15 is connected to the bottom end of the screw 5, so that the rotation of the screw 5 and the movement of the frame 6 are independent of each other, thus avoiding the frame 6 from rotating with it.

[0025] Specifically, in this embodiment, a first sealing ring 16 is embedded in the outer wall of the pressure ring 7. The first sealing ring 16 is in contact with the inner wall of the upper cylinder 1 to prevent water from seeping into the concrete specimen 3 from between the pressure ring 7 and the upper cylinder 1 and affecting the test results.

[0026] Specifically, in this embodiment, a second sealing ring 17 is embedded in the bottom end of the pressure ring 7 and the top end of the bearing ring 9. The two second sealing rings 17 contact the top and bottom ends of the concrete specimen 3 respectively, which improves the sealing performance between the pressure ring 7, the bearing ring 9 and the concrete specimen 3, and prevents water from seeping in from the contact surface and affecting the test results.

[0027] Specifically, in this embodiment, a third sealing ring 18 is embedded in the contact surface between the upper cylinder 1 and the lower cylinder 2, which improves the sealing performance of the connection between the upper cylinder 1 and the lower cylinder 2.

[0028] Specifically, in this embodiment, support shafts 19 are provided on both sides of the nut 12. Both support shafts 19 are rotatably connected in the second lug 11 to ensure the rotatability of the nut 12, while providing support and limiting for the tightening of the bolt 13.

[0029] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A device for detecting the repairing effect of cracks in concrete structures, comprising an upper cylinder (1), a lower cylinder (2) and a concrete test piece (3), characterized in that: The upper cylinder (1) and the lower cylinder (2) are connected on the same side outer wall by a hinge (4). A screw (5) is internally threaded at the top of the upper cylinder (1). A frame (6) is movably connected to the bottom of the screw (5). A pressure ring (7) is provided at the bottom of the frame (6). A water inlet (8) is provided at the top of the upper cylinder (1). A pressure ring (9) is provided inside the bottom of the lower cylinder (2). The concrete specimen (3) is arranged on the pressure ring. Between (7) and the pressure ring (9), a first lug (10) is provided on one side of the upper cylinder (1), and a second lug (11) is provided on the same side of the lower cylinder (2). A nut (12) is rotatably connected inside the second lug (11), and a bolt (13) is threadedly connected inside the nut (12). The threaded section of the bolt (13) is fitted inside the first lug (10), and the nut section of the bolt (13) is arranged above the first lug (10).

2. The apparatus for detecting a crack repair effect of a concrete structure according to claim 1, wherein: A bellows protective sleeve (14) is provided between the inner wall of the top of the upper cylinder (1) and the frame (6), and the bellows protective sleeve (14) is arranged on the outer wall of the screw (5).

3. The apparatus for detecting a crack repair effect of a concrete structure according to claim 1, wherein: The top of the frame (6) is rotatably connected to a connecting shaft (15), the cross section of the connecting shaft (15) is T-shaped, and the connecting shaft (15) is connected to the bottom end of the screw (5).

4. The apparatus for detecting a crack repair effect of a concrete structure according to claim 1, wherein: The outer wall of the pressure ring (7) is fitted with a first sealing ring (16), which is in contact with the inner wall of the upper cylinder (1).

5. The apparatus for detecting a crack repair effect of a concrete structure according to claim 1, wherein: The bottom end of the pressure ring (7) and the top end of the pressure ring (9) are both fitted with a second sealing ring (17), and the two second sealing rings (17) are in contact with the top and bottom ends of the concrete specimen (3), respectively.

6. The apparatus for detecting a crack repair effect of a concrete structure according to claim 1, wherein: A third sealing ring (18) is fitted into the contact surface between the upper cylinder (1) and the lower cylinder (2).

7. The apparatus for detecting a crack repair effect of a concrete structure according to claim 1, wherein: The nut (12) is provided with support shafts (19) on both sides, and the two support shafts (19) are rotatably connected in the second lug (11).

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