Anti-seepage layer crack detection device

Abstract

The present invention discloses a device for detecting cracks in an anti-seepage layer, which relates to the field of crack detection technology and includes a fixed frame, a mounting frame being installed on the top of the fixed frame, and both the fixed frame and the mounting frame are rectangular structures. When the present invention detects cracks in the anti-seepage layer at the bottom of a foundation pit, the device starts a propping-up detection mechanism to detect cracks in the anti-seepage layer at the bottom of the foundation pit, and when the anti-seepage layer at the top of the foundation pit is detected, the accuracy of the detection process and the protection capability of the detection end can be improved to prevent the detection end from coming into contact with and being surrounded by the silt if the detection end is directly moved to the bottom of the foundation pit due to the presence of a large amount of silt and various debris at the bottom of the foundation pit during the detection process of the foundation pit. Furthermore, if there are metal objects in the silt, the accuracy of the detection process will be affected, resulting in errors in the detection results.

Description

Technical Field

[0001] The present invention relates to the technical field of crack detection, in particular to a device for detecting cracks in an anti-seepage layer. Background Art

[0002] An anti-seepage layer refers to a method of preventing liquid infiltration through certain technical means. The main means of anti-seepage are blocking and reinforcement. Applying a layer of polymer compounds on the solid surface facing the liquid can effectively prevent liquid infiltration. It is also often used in places such as construction or municipal construction. In the process of municipal construction, it is necessary to dig a foundation pit. After the foundation pit is successfully excavated and the anti-seepage layer is laid, the anti-seepage layer will be tested for cracks in case of heavy rain. Since rainwater and a large amount of silt and debris will accumulate at the bottom of the foundation pit, if the detection mechanism is moved directly into the silt at the bottom of the foundation pit, the silt will directly wrap the detection mechanism. If the silt is mixed with metal substances, it will affect the final result after the test, resulting in errors in the final result. Summary of the Invention

[0003] The object of the present invention is to provide a device for detecting cracks in an anti-seepage layer to solve the problems raised in the above background technology.

[0004] To achieve the above object, the present invention provides the following technical solution: an anti-seepage layer crack detection device, comprising a fixed frame, a mounting frame mounted on the top of the fixed frame, and both the fixed frame and the mounting frame are rectangular structures;

[0005] A resistance mechanism, the resistance mechanism being movably mounted on the periphery of the exterior of the fixed frame, the resistance mechanism comprising mounting notches, four of the mounting notches being provided on the periphery of the exterior of the fixed frame;

[0006] An expansion detection mechanism, the expansion detection mechanism is movably mounted on the bottom end of the fixed frame, and the expansion detection mechanism includes two expansion frame plates, and the two expansion frame plates are movably mounted on both sides of the bottom end of the fixed frame;

[0007] The protection mechanism is movably mounted around the bottom end of the installation frame, a fixed bottom ring plate is movably mounted on the lower end of the installation frame, and an operating telescopic rod is movably mounted on the top of the installation frame.

[0008] Preferably, the expansion detection mechanism also includes an extrusion wheel, a detector, a fixed frame rod, a sealing sleeve, a tensioning spring and an electric push rod. The electric push rod is installed in the middle of the fixed frame by bolts, the detector is installed at the bottom end of the electric push rod by bolts, and the fixed frame rod is installed around the outside of the detector by bolts. The two extrusion wheels are respectively installed at both ends of the fixed frame rod by bolts, and the sealing sleeve is installed at the upper end of the outside of the detector and the bottom end of the fixed frame by bolts. Several tensioning springs are respectively installed on both sides of the bottom end of the fixed frame and the upper end of the opposite side of the expansion frame plate on both sides by bolts. The electric push rod and the detector are both equipped with a remote control switch.

[0009] Preferably, a funnel-shaped structure is formed between the bottom ends of the opposite sides of the expanded frame plates on both sides, a fixed circular opening is opened in the middle of the fixed frame, and several reinforcing ribs are equidistantly installed on the bottom ends of the opposite sides of the expanded frame plates on both sides by welding, and an operating ring is installed on the top of the operating telescopic rod by bolts.

[0010] Preferably, batteries are installed on the top of the fixed bottom ring plate on both sides of the interior of the installation frame through bolts, and the batteries are electrically connected to the electric push rod and the detector through wires. The exterior of the fixed bottom ring plate is a rectangular structure.

[0011] Preferably, the resistance mechanism also includes a protective airbag, a movable connecting rod, an extrusion airbag, an extrusion ring plate and a fixed ring frame. The four protective airbags are respectively installed on one side of the inner part of the installation slot by bolts, the fixed ring frame is installed on the inner bottom end of the fixed frame by bolts, the extrusion airbag is installed on the inner bottom end of the fixed ring frame by bolts, the extrusion ring plate is installed on the top of the extrusion airbag by bolts, the two movable connecting rods are installed in the middle of both sides of the inner cavity of the extrusion ring plate by bolts, the bottom end of the movable connecting rod passes through the inner bottom end of the fixed frame and is connected to the outside of the detector by bolts, and a connecting air pipe is installed between one side of the protective airbag and one side of the bottom end of the extrusion airbag by bolts.

[0012] Preferably, the fixed ring frame and the extrusion ring plate are circular structures when viewed from above, and movable through grooves are provided in the middle of both sides of the interior of the fixed ring frame. The signal transmitter is installed on the left side of the middle of the top of the interior of the fixed frame by bolts. The signal transmitter is wirelessly connected to the external control end, and the signal transmitter is electrically connected to the battery through a wire. A sliding hole is provided at the bottom end of the fixed frame at a position relative to the movable connecting rod, and a rubber ring is installed inside the sliding hole by bonding.

[0013] Preferably, the protection mechanism includes a moisture-absorbing sponge, a mounting rope, a starting guide and a fixed ring plate, the mounting rope is installed on the bottom end of the fixed bottom ring plate by bolts, the moisture-absorbing sponge is installed on the bottom end of the mounting rope by bolts, the fixed ring plate is installed around the bottom end of the frame by bolts, and the two starting guides are respectively installed on the lower end of the inner cavity of the fixed ring plate and around the top of the moisture-absorbing sponge by bolts, and the starting guides on both sides are electrically connected to the signal transmitter respectively.

[0014] Preferably, the fixed ring plate and the moisture-absorbing sponge are in a circular ring structure when viewed from above, the installation rope is made of elastic material, and fixed recesses are provided on the front and rear sides of the bottom ends of both sides of the fixed frame, and the top ends of the open frame plates on both sides are connected to the inside of the fixed recesses through fixed shafts.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. When the present invention detects cracks in the anti-seepage layer at the bottom of the foundation pit, the crack detection is performed on the anti-seepage layer at the bottom of the foundation pit by activating the propping-up detection mechanism. When the anti-seepage layer at the top of the foundation pit is detected, the accuracy of the detection process and the protection capability of the detection end are improved. This prevents the detection end from coming into contact with and being surrounded by the silt if the detection end is directly moved to the bottom of the foundation pit, as there is a large amount of silt and various debris at the bottom of the foundation pit. Furthermore, if there are metal objects in the silt, the accuracy of the detection process will be affected, resulting in errors in the detection results.

[0017] 2. The present invention simultaneously activates the resistance mechanism by expanding the detection mechanism, which can not only further push away the silt outside the detection area, but also increase the protection capability of the fixed frame during operation, thereby preventing the silt outside the detection area from being pushed away insufficiently, causing silt collapse and submerging the detection area, and also preventing the floating and flowing sediments in the foundation pit from colliding with the detection end and causing damage to the detection end. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Provides a schematic diagram of the overall three-dimensional structure of an embodiment of the present invention;

[0019] Figure 2 A structural diagram of an overall horizontal cross-section provided by an embodiment of the present invention;

[0020] Figure 3 A structural diagram of an open frame provided in an embodiment of the present invention;

[0021] Figure 4 A three-dimensional structural diagram of an extruded ring plate provided in an embodiment of the present invention;

[0022] Figure 5A three-dimensional cross-sectional structural diagram of a fixed ring frame provided in an embodiment of the present invention;

[0023] Figure 6 The embodiment of the present invention provides Figure 2 A magnified structural diagram in the middle.

[0024] In the figure: 1. Fixed frame; 2. Resistance mechanism; 201. Mounting slot; 202. Protective airbag; 203. Movable connecting rod; 204. Extrusion airbag; 205. Extrusion ring plate; 206. Fixed ring frame; 3. Opening detection mechanism; 301. Opening frame plate; 302. Extrusion wheel; 303. Detector; 304. Fixed frame rod; 305. Sealing sleeve; 306. Tension spring; 307. Electric push rod; 4. Mounting frame; 5. Operating telescopic rod; 6. Protection mechanism; 601. Moisture-absorbing sponge; 602. Mounting rope; 603. Starting guide; 604. Fixed ring plate; 7. Reinforcement rib; 8. Signal transmitter; 9. Battery; 10. Fixed bottom ring plate; 11. Movable through slot. DETAILED DESCRIPTION

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] See also Figure 1-6 The present invention provides a technical solution: an anti-seepage layer crack detection device, comprising a fixing frame 1, a mounting frame 4 is mounted on the top of the fixing frame 1, and both the fixing frame 1 and the mounting frame 4 are rectangular structures;

[0027] The resistance mechanism 2 is movably mounted on the periphery of the fixed frame 1. The resistance mechanism 2 includes mounting slots 201. Four mounting slots 201 are provided on the periphery of the fixed frame 1.

[0028] The expansion detection mechanism 3 is movably mounted on the bottom end of the fixed frame 1. The expansion detection mechanism 3 includes two expansion frame plates 301. The two expansion frame plates 301 are movably mounted on both sides of the bottom end of the fixed frame 1;

[0029] The protection mechanism 6 is movably mounted around the bottom end of the installation frame 4 , a fixed bottom ring plate 10 is movably mounted on the lower end around the inside of the installation frame 4 , and an operating telescopic rod 5 is movably mounted on the top of the installation frame 4 .

[0030] The expansion detection mechanism 3 also includes an extrusion wheel 302, a detector 303, a fixed frame rod 304, a sealing sleeve 305, a tension spring 306 and an electric push rod 307. The electric push rod 307 is mounted on the middle of the fixed frame 1 by bolts, the detector 303 is mounted on the bottom end of the electric push rod 307 by bolts, and the fixed frame rod 304 is mounted on the outside of the detector 303 by bolts. The two extrusion wheels 302 are respectively mounted on both ends of the fixed frame rod 304 by bolts, and the upper end of the outer side of the detector 303 is mounted on the bottom end of the fixed frame 1 by bolts. There is a sealing sleeve 305, and several tension springs 306 are respectively installed on both sides of the bottom end of the fixed frame 1 and the upper end of the opposite side of the open frame plate 301 on both sides by bolts. The electric push rod 307 and the detector 303 are both equipped with a remote control switch. In this way, when the anti-seepage layer at the bottom of the foundation pit is detected for cracks, the length of the telescopic rod 5 is adjusted according to the water depth, and the fixed frame 1 is moved to the bottom of the water, which will cause the open frame plates 301 on both sides to move and squeeze into the silt at the bottom of the foundation pit. When it moves to the position to be detected, the electric push rod 307 is started. The detector 303 is driven to move downward, and the fixed frame rod 304 is driven to move downward, and the squeezing wheels 302 on both sides are driven to move downward through the fixed frame rod 304. When the squeezing wheels 302 on both sides move downward, they will contact and squeeze the middle and lower ends of the opposite sides of the open frame plates 301 on both sides, and at the same time, with the fixed axis as the axis, push the bottom ends of the open frame plates 301 on both sides to move to the opposite side, so that the silt outside the area to be detected is directly pushed away, the detection area is exposed and the detector 303 is moved to the detection area. The device 303 detects cracks in the anti-seepage layer at the bottom of the foundation pit, and when detecting the anti-seepage layer at the top of the foundation pit, it can improve the accuracy of the detection process and the protection capability of the detection end, so as to prevent the detection end from coming into contact with and being surrounded by the silt if it is moved directly to the bottom of the foundation pit, because there is a large amount of silt and various debris at the bottom of the foundation pit. If there are also metal objects in the silt, the accuracy of the detection process will be affected, resulting in errors in the detection results.

[0031] The bottom ends of the two side support frames 301 on opposite sides are funnel-shaped, a fixed circular opening is opened in the middle of the fixed frame 1, and a number of reinforcing ribs 7 are evenly installed on the bottom ends of the two side support frames 301 on opposite sides by welding, and an operating ring is installed on the top of the operating telescopic rod 5 by bolts;

[0032] Batteries 9 are installed on the top of the fixed bottom ring plate 10 on both sides of the interior of the mounting frame 4 by bolts. The batteries 9 are electrically connected to the electric push rod 307 and the detector 303 through wires. The outer periphery of the fixed bottom ring plate 10 is a rectangular structure.

[0033] The resistance mechanism 2 also includes a protective airbag 202, a movable connecting rod 203, an extrusion airbag 204, an extrusion ring plate 205 and a fixed ring frame 206. The four protective airbags 202 are respectively mounted on one side of the inner portion of the mounting slot 201 by bolts, the fixed ring frame 206 is mounted on the inner bottom end of the fixed frame 1 by bolts, the extrusion airbag 204 is mounted on the inner bottom end of the fixed ring frame 206 by bolts, the extrusion ring plate 205 is mounted on the top of the extrusion airbag 204 by bolts, and two movable connecting rods 203 are mounted on the middle of both sides of the inner cavity of the extrusion ring plate 205 by bolts. The bottom end of the movable connecting rod 203 passes through the inner bottom end of the fixed frame 1 and is connected to the outside of the detector 303 by bolts. A connecting air pipe is installed between one side of the protective airbag 202 and one side of the bottom end of the extrusion airbag 204 by bolts, so that when the detector is in operation, the protective airbag 202 can be turned off. When the detector 303 moves downward, it will drive the movable connecting rods 203 on both sides to move downward, and the movable connecting rods 203 will drive the extrusion ring plate 205 to move downward. When the extrusion ring plate 205 moves downward, it will squeeze the extrusion airbag 204. When the extrusion airbag 204 is squeezed, the air inside the extrusion airbag 204 will be transported to the inside of the protection airbag 202 through the connecting air pipe, and the protection airbag 202 will expand. This can not only further push away the silt outside the detection area, but also increase the protection ability of the fixed frame 1 during work, avoid the silt outside the detection area from being pushed away insufficiently, resulting in silt collapse and covering the detection area, and also prevent the floating sediment in the foundation pit from hitting the detection end and causing damage to the detection end.

[0034] The fixed ring frame 206 and the extrusion ring plate 205 are formed into a circular ring structure when viewed from above. A movable through slot 11 is provided in the middle of both sides of the interior of the fixed ring frame 206. The signal transmitter 8 is mounted on the left side of the middle of the top of the interior of the fixed frame 1 by bolts. The signal transmitter 8 is wirelessly connected to the external control terminal and is electrically connected to the battery 9 via a wire. A sliding hole is provided at the bottom of the fixed frame 1 at a position opposite to the movable connecting rod 203, and a rubber ring is mounted inside the sliding hole by bonding.

[0035] The protection mechanism 6 includes a moisture-absorbing sponge 601, a mounting rope 602, a start guide 603 and a fixed ring plate 604. The mounting rope 602 is mounted on the bottom end of the fixed bottom ring plate 10 by bolts, the moisture-absorbing sponge 601 is mounted on the bottom end of the mounting rope 602 by bolts, the fixed ring plate 604 is mounted around the bottom end of the frame 4 by bolts, and two start guides 603 are respectively mounted on the lower end of the inner cavity of the fixed ring plate 604 and around the top of the moisture-absorbing sponge 601 by bolts. The start guides 603 on both sides are electrically connected to the signal transmitter 8. Then, when the fixing frame 1 and the installation frame 4 are extended into the foundation pit for inspection, moisture will be generated inside the installation frame 4 when infiltration occurs, and will be absorbed by the moisture-absorbing sponge 601, which increases the weight of the moisture-absorbing sponge 601, causing the moisture-absorbing sponge 601 to move downward, and driving the upper start guide 603 to move downward, so that the upper start guide 603 and the lower start guide 603 contact each other, and the signal transmitter 8 is activated to transmit a signal to the control end, informing the staff that the infiltration situation needs to be dealt with in a timely manner;

[0036] The fixed ring plate 604 and the moisture-absorbing sponge 601 are circular structures when viewed from above, and the installation rope 602 is made of elastic material. Fixed recesses are provided on the front and rear sides of the bottom ends of both sides of the fixed frame 1, and the top ends of the open frame plates 301 on both sides are connected to the inside of the fixed recesses through fixed shafts. In this way, the fixed recesses and the fixed shafts are fixed to the open frame plates 301 for installation and fixation.

[0037] Working principle: When the present invention is detecting cracks in the anti-seepage layer at the bottom of the foundation pit, the length of the telescopic rod 5 is adjusted according to the water depth, and the fixed frame 1 is moved to the bottom of the water, and the open frame plates 301 on both sides are moved and squeezed into the silt at the bottom of the foundation pit. When it moves to the position to be detected, the electric push rod 307 is started to drive the detector 303 to move downward, and the fixed frame rod 304 is driven to move downward, and the extrusion wheels 302 on both sides are driven to move downward through the fixed frame rod 304. When the extrusion wheels 302 on both sides move downward, they will contact and squeeze the middle and lower ends of the opposite sides of the open frame plates 301 on both sides, and at the same time, with the fixed axis as the axis, push the bottom ends of the open frame plates 301 on both sides toward each other. If it moves to the opposite side, the silt outside the area to be detected will be directly pushed away, the detection area will be exposed and the detector 303 will be moved to the detection area. The anti-seepage layer at the bottom of the foundation pit will be detected for cracks by the detector 303. When the anti-seepage layer at the top of the foundation pit is detected, the accuracy of the detection process and the protection capability of the detection end can be improved to prevent the detection end from coming into contact with and being surrounded by the silt if the detection end is directly moved to the bottom of the foundation pit during the detection process of the foundation pit due to the large amount of silt and various debris at the bottom of the foundation pit. If there are metal objects in the silt, the accuracy of the detection process will be affected, resulting in errors in the detection results.

[0038] At the same time, when the detector 303 moves downward, it will drive the movable connecting rods 203 on both sides to move downward, and the extrusion ring plate 205 will be driven downward by the movable connecting rods 203. When the extrusion ring plate 205 moves downward, it will squeeze the extrusion airbag 204, and when the extrusion airbag 204 is squeezed, the air inside the extrusion airbag 204 will be transported to the inside of the protective airbag 202 through the connecting air pipe, and the protective airbag 202 will expand. It can not only further push away the silt outside the detection area, but also increase the protection ability of the fixed frame 1 during operation, and avoid the silt outside the detection area from being pushed away insufficiently, causing silt to collapse and submerge the detection area, and can also avoid the floating and flowing sediments in the foundation pit from colliding with the detection end, causing the detection end to be damaged.

[0039] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0040] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A device for detecting cracks in an anti-seepage layer, comprising a fixing frame (1), a mounting frame (4) being mounted on the top of the fixing frame (1), characterized in that: A resistance mechanism (2), the resistance mechanism (2) being movably mounted on the periphery of the exterior of the fixed frame (1), the resistance mechanism (2) comprising mounting notches (201), four of the mounting notches (201) being provided on the periphery of the exterior of the fixed frame (1); An opening detection mechanism (3), the opening detection mechanism (3) is movably mounted on the bottom end of the fixed frame (1), the opening detection mechanism (3) comprises two opening frame plates (301), and the two opening frame plates (301) are movably mounted on both sides of the bottom end of the fixed frame (1); A protection mechanism (6), the protection mechanism (6) is movably mounted around the bottom end of the interior of the installation frame (4), a fixed bottom ring plate (10) is movably mounted on the lower end of the interior of the installation frame (4), and an operating telescopic rod (5) is movably mounted on the top of the installation frame (4); The expansion detection mechanism (3) further comprises an extrusion wheel (302), a detector (303), a fixed frame rod (304), a sealing sleeve (305), a tension spring (306) and an electric push rod (307), wherein the electric push rod (307) is mounted on the middle of the fixed frame (1) by bolts, the detector (303) is mounted on the bottom end of the electric push rod (307) by bolts, the fixed frame rod (304) is mounted on the periphery of the outside of the detector (303) by bolts, two extrusion wheels (302) are respectively mounted on both ends of the fixed frame rod (304) by bolts, the upper end of the outer side of the detector (303) and the bottom end of the fixed frame (1) are mounted with a sealing sleeve (305) by bolts, a plurality of tension springs (306) are respectively mounted on both sides of the bottom end of the fixed frame (1) and the upper ends of the opposite side of the expansion frame plates (301) on both sides by bolts, and the electric push rod (307) and the detector (303) are both equipped with a remote control switch; The resistance mechanism (2) further comprises a protective airbag (202), a movable connecting rod (203), an extrusion airbag (204), an extrusion ring plate (205) and a fixed ring frame (206), wherein the four protective airbags (202) are respectively mounted on one side of the interior of the mounting notch (201) by bolts, the fixed ring frame (206) is mounted on the interior bottom end of the fixed frame (1) by bolts, the extrusion airbag (204) is mounted on the interior bottom end of the fixed ring frame (206) by bolts, the extrusion ring plate (205) is mounted on the top of the extrusion airbag (204) by bolts, the two movable connecting rods (203) are mounted on the middle of both sides of the inner cavity of the extrusion ring plate (205) by bolts, the bottom end of the movable connecting rod (203) passes through the interior bottom end of the fixed frame (1) and is connected to the outside of the detector (303) by bolts, and a connecting air pipe is mounted between one side of the protective airbag (202) and one side of the bottom end of the extrusion airbag (204) by bolts.

2. The device for detecting cracks in an anti-seepage layer according to claim 1, characterized in that: A funnel-shaped structure is formed between the bottom ends of the opposite sides of the open frame plates (301) on both sides. A fixed circular opening is opened in the middle of the fixed frame (1). A plurality of reinforcing ribs (7) are equidistantly installed at the bottom ends of the opposite sides of the open frame plates (301) on both sides by welding. An operating ring is installed at the top end of the operating telescopic rod (5) by bolts.

3. The device for detecting cracks in an anti-seepage layer according to claim 1, characterized in that: Batteries (9) are installed on both sides of the interior of the installation frame (4) at the top of the fixed bottom ring plate (10) through bolts. The batteries (9) are electrically connected to the electric push rod (307) and the detector (303) through wires. The exterior of the fixed bottom ring plate (10) is a rectangular structure.

4. The device for detecting cracks in an anti-seepage layer according to claim 1, characterized in that: The fixed ring frame (206) and the extrusion ring plate (205) are in a circular ring structure when viewed from above. A movable through slot (11) is provided in the middle of both sides of the fixed ring frame (206). A signal transmitter (8) is installed on the left side of the middle of the top of the fixed frame (1) by means of bolts. The signal transmitter (8) is wirelessly connected to an external control terminal. The signal transmitter (8) is electrically connected to a battery (9) via a wire. A sliding hole is provided at the bottom end of the fixed frame (1) at a position relative to the movable connecting rod (203), and a rubber ring is installed inside the sliding hole by bonding.

5. The device for detecting cracks in an anti-seepage layer according to claim 4, characterized in that: The protection mechanism (6) comprises a moisture-absorbing sponge (601), a mounting rope (602), a starting guide (603) and a fixed ring plate (604), wherein the mounting rope (602) is mounted on the bottom end of the fixed bottom ring plate (10) by means of bolts, the moisture-absorbing sponge (601) is mounted on the bottom end of the mounting rope (602) by means of bolts, the fixed ring plate (604) is mounted around the bottom end of the mounting frame (4) by means of bolts, and a starting guide (603) is mounted around the lower end of the inner cavity of the fixed ring plate (604) and the top end of the moisture-absorbing sponge (601) by means of bolts, and the starting guide (603) is electrically connected to the signal transmitter (8).

6. The device for detecting cracks in an anti-seepage layer according to claim 5, characterized in that: The fixed ring plate (604) and the moisture-absorbing sponge (601) are in a circular ring structure when viewed from above. The installation rope (602) is made of elastic material. The front and rear sides of the bottom ends of both sides of the fixed frame (1) are provided with fixed recesses. The top ends of the open frame plates (301) on both sides are connected to the inside of the fixed recesses through fixed shafts.

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