Detection device for port and channel engineering

Abstract

The invention relates to the technical field of detection devices, and discloses a port and channel engineering detection device which comprises an equipment box, a winding roller is rotatably mounted in the equipment box, a lifting rope is wound on the outer surface of the winding roller, and two cantilever plates are symmetrically and fixedly mounted on the outer surface of one end of the equipment box. A guide wheel is rotationally installed between the two cantilever plates, the lifting rope winds around the guide wheel, and a detection head is fixedly installed at the end, away from the winding roller, of the lifting rope. Water in a communicating pipe flows to drive an impeller to rotate, so that the impeller drives a driving gear to rotate, the driving gear drives an annular receiving hopper to rotate through an end face gear ring meshed with the driving gear, and bristles and a spray head mounted on the inner side of the annular receiving hopper rotate around a detection head, so that the surface of the detection head is comprehensively brushed; after the detection head is salvaged, impurities such as underwater aquatic plants are prevented from drying up and adhering to the surface of the detection head, and the subsequent use effect of the ultrasonic sensor and the optical sensor is prevented from being affected.

Description

Technical Field

[0001] The present invention relates to the technical field of detection devices, and in particular to a detection device for port and waterway engineering. Background Art

[0002] Ports are facilities used for ships to berth, load and unload goods and conduct other marine activities. It includes docks, berths, yards, warehouses, etc. Waterways are channels connecting ports with the ocean or other waters and are used for ships to navigate. The hydrological information of ports and waterways has an important impact on shipping operations and can help to fully understand the status of the water environment in order to conduct navigation safety management, water area planning and resource protection. Among them, water depth and water quality testing is also one of the important contents of port and waterway engineering testing. By measuring water depth and water quality, the navigable depth of ports and waterways, floating areas and the location of potential obstacles can be determined, providing an important basis for the navigation safety of ships.

[0003] An existing detection device for port and waterway engineering (Announcement No.: CN219656901U) has at least the following disadvantages: the above patent realizes the operation of laying out the connecting line of the detection head by turning the handle, and puts the detection head body into the water to collect underwater data; since the detection head body is directly used underwater, after the detection head body is put underwater, underwater impurities such as water plants will adhere to the surface of the detection head body. After the detection head body is salvaged, the adhered water plants and other impurities will dry up and adhere to the surface of the detection head body, affecting the subsequent use of the detection head body. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a detection device for port and waterway engineering.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A detection device for port and waterway engineering, comprising an equipment box, a winding roller is rotatably installed inside the equipment box, a lifting rope is wound around the outer surface of the winding roller, two cantilever plates are symmetrically fixedly installed on the outer surface of one end of the equipment box, a guide wheel is rotatably installed between the two cantilever plates, the lifting rope passes around the guide wheel, a detection head is fixedly installed on the end of the lifting rope away from the winding roller, the detection head is a hollow structure, and an ultrasonic sensor and an optical sensor are fixedly installed inside the detection head, a limiting ring is fixedly installed on the outer surface of the top of the detection head, a cover tube is sleeved on the outer surface of the detection head, the limiting ring is slidably installed on the inner wall of the cover tube, a thrust spring is fixedly installed between the top wall of the cover tube and the top of the detection head, a cleaning mechanism for cleaning the surface of the detection head is installed at the bottom of the cover tube, and a limiting mechanism is installed on the outer surface of the cover tube near its top.

[0006] As a further solution of the present invention, the cleaning mechanism includes a support ring fixedly mounted on the outer surface of the bottom of the cover tube, the bottom end of the support ring is provided with an annular groove, the inner wall of the annular groove is rotatably provided with an annular bucket, the top of the annular bucket is an open structure, a plurality of bristles are evenly fixedly mounted on the inner ring side of the annular bucket, and a plurality of nozzles connected to the interior thereof are also evenly fixedly mounted on the inner ring side of the annular bucket, and a connecting component is installed between the support ring and the cover tube.

[0007] As a further solution of the present invention, the connecting component includes a connecting pipe fixedly installed between the support ring and the top of the cover tube, the connecting pipe passes through the top of the support ring and is connected with the interior of the annular connecting bucket, a second one-way valve that conducts to the interior of the annular connecting bucket is fixedly installed on the connecting pipe, and a rotating component that drives the annular connecting bucket to rotate is installed on the connecting pipe.

[0008] As a further solution of the present invention, the rotating assembly includes a guide cover fixedly mounted on the outer surface of the connecting pipe, an impeller is rotatably mounted inside the guide cover, an end face gear ring is fixedly mounted on the outer periphery of the annular bucket, and a driving gear meshing with the end face gear ring is fixedly mounted at the rotation center of the impeller through a rotating shaft passing through the outside of the guide cover.

[0009] As a further solution of the present invention, a water inlet hole is formed through the top of the cover tube, and a first one-way valve that conducts one-way flow toward the inside of the cover tube is fixedly mounted on the inner wall of the water inlet hole.

[0010] As a further solution of the present invention, the limiting mechanism includes a wedge-shaped block inserted through the outer surface of the cover tube near its top, the outer surface of the wedge-shaped block located outside the cover tube is fixedly installed with a fixing ring, the outer surface of the cover tube near the wedge-shaped block is fixedly installed with a C-shaped plate, a compression spring is fixedly installed between the inner side of the C-shaped plate and the fixing ring, an electromagnet is fixedly installed on the inner side of the C-shaped plate, and the wedge-shaped block is made of ferromagnetic material.

[0011] As a further solution of the present invention, a rubber ring is fixedly mounted on the top end of the limiting ring, and the outer periphery of the rubber ring is slidably mounted on the inner wall of the cover tube.

[0012] As a further solution of the present invention, an annular cover is fixedly mounted on the outer surface of the cover tube near the bottom thereof, and the end face gear ring and the driving gear are both arranged inside the annular cover.

[0013] As a further solution of the present invention, a plurality of support columns are evenly fixedly installed on the top of the cover tube, rubber rings are fixedly installed on the top of the plurality of support columns, baffles are fixedly installed on the bottom ends of the two cantilever plates, and the suspension rope is arranged through the baffles.

[0014] The beneficial effects of the present invention are: 1. The lifting rope is rolled up by the winding roller, so that the lifting rope pulls the detection head to float up as a whole. After the rubber ring installed at the top of the cover tube abuts against the baffle installed at the bottom of the cantilever plate, the cover tube will no longer move up, but the lifting rope will continue to pull the detection head upward. When the detection head moves up, the water sucked into the cover tube will be squeezed into the annular bucket from the connecting pipe through the rubber ring, and sprayed out through multiple nozzles installed on the inner side of the annular bucket, so as to wash the surface of the detection head during the movement; 2. The water flow in the connecting pipe drives the impeller to rotate, which drives the driving gear to rotate, and the driving gear drives the annular bucket to rotate through the meshing end face gear ring, so that the bristles and nozzles installed on the inner side of the annular bucket rotate around the detection head, so as to fully brush the surface of the detection head, and avoid underwater impurities such as water plants drying and adhering to the surface of the detection head after the detection head is salvaged, which affects the use of subsequent ultrasonic sensors and optical sensors; 3. When the cover tube and the detection head move away from each other, the rubber ring fixedly installed on the limit ring will make piston movement in the cover tube, and can draw water from the outside into the cover tube through the first one-way valve, so that the water increases the overall weight of the detection head and the cover tube, thereby preventing the detection head from being too light, causing the detection head to deviate greatly with the fluctuation of water, and affecting the detection effect of the area to be detected. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of a detection device for port and waterway engineering proposed by the present invention; Figure 2 A schematic diagram of the internal structure of an equipment box for a port and waterway engineering detection device proposed by the present invention; Figure 3 This is a schematic diagram of the structure of a detection head in an extended state of a detection device for port and waterway engineering proposed by the present invention; Figure 4 This is a schematic diagram of the structure of a port and waterway engineering detection device proposed by the present invention, with the annular cover removed; Figure 5 This is a schematic diagram of the internal structure of a cover tube for a port and waterway engineering detection device proposed by the present invention; Figure 6 A schematic diagram of the internal structure of a detection head for a port and waterway engineering detection device proposed by the present invention; Figure 7 This is a schematic diagram of the top structure of a support ring for a port and waterway engineering detection device proposed by the present invention; Figure 8 This is a schematic diagram of the internal structure of a ring-shaped receiving bucket for a port and waterway engineering detection device proposed by the present invention; Fig. 9This is a schematic diagram of the bottom structure of a support ring for a port and waterway engineering detection device proposed by the present invention; Fig.10 for Figure 5 A magnified view of the structure in the middle.

[0016] In the figure: 1. Equipment box; 2. Winding roller; 3. Cantilever plate; 4. Guide wheel; 5. Lifting rope; 6. Detection head; 7. Limiting ring; 8. Cover tube; 9. Thrust spring; 10. First one-way valve; 11. Rubber ring; 12. Support ring; 13. Annular groove; 14. Annular receiving bucket; 15. Bristles; 16. Spray head; 17. Connecting pipe; 18. Second one-way valve; 19. Guide cover; 20. Impeller; 21. Driving gear; 22. End gear ring; 23. Annular cover; 24. Support column; 25. Rubber ring; 26. Baffle; 27. Stepping motor; 28. Display; 29. ​​Wedge block; 30. C-type plate; 31. Fixed ring; 32. Compression spring; 33. Electromagnet; 34. Ultrasonic sensor; 35. Optical sensor. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0018] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0019] Refer to the attached Figure 1 -Attached Fig.10, a detection device for port and waterway engineering, including an equipment box 1, a winding roller 2 is rotatably installed inside the equipment box 1, and a lifting rope 5 is wound around the outer surface of the winding roller 2. Two cantilever plates 3 are symmetrically fixedly installed on the outer surface of one end of the equipment box 1, and a guide wheel 4 is rotatably installed between the two cantilever plates 3. The lifting rope 5 passes over the guide wheel 4, and a detection head 6 is fixedly installed at the end of the lifting rope 5 away from the winding roller 2. The detection head 6 is a hollow structure, and an ultrasonic sensor 34 and an optical sensor 35 are fixedly installed inside the detection head 6. The ultrasonic sensor 34 emits and receives sound waves to detect the distance and shape of underwater objects; the detection head 6 is made of transparent material, and the optical sensor 35 can obtain underwater images or data by photographing the underwater environment; a stepper motor 27 is fixedly installed on the outer surface of the equipment box 1, and the output end of the stepper motor 27 passes through the inner wall of the equipment box 1 and is fixedly installed with the rotation center of the winding roller 2, and the top of the equipment box 1 is fixedly installed There is a display 28, and the information collected by the ultrasonic sensor 34 and the optical sensor 35 will be transmitted to the display 28 through an external receiver, so that the detection personnel can collect underwater data; the control method of the electrical components in this scheme is controlled by an external controller matched therewith, and the control circuit can be realized by simple programming by technicians in this field, which belongs to the common knowledge in this field and is only used without improvement; a limit ring 7 is fixedly installed on the outer surface of the top of the detection head 6, and a cover tube 8 is provided on the outer surface of the detection head 6. A retaining ring for limiting the limit ring 7 is fixedly installed on the inner wall of the bottom end of the cover tube 8 to prevent the detection head 6 from separating and falling off from the cover tube 8; the limit ring 7 is slidably installed on the inner wall of the cover tube 8, and a thrust spring 9 is fixedly installed between the top wall of the cover tube 8 and the top of the detection head 6, and a cleaning mechanism for cleaning the surface of the detection head 6 is installed at the bottom of the cover tube 8, and a limit mechanism is installed on the outer surface of the cover tube 8 near its top.

[0020] In this embodiment, the cleaning mechanism includes a support ring 12 fixedly mounted on the outer surface of the bottom of the cover tube 8, and an annular groove 13 is provided at the bottom end of the support ring 12. An annular bucket 14 is rotatably mounted on the inner wall of the annular groove 13. The top of the annular bucket 14 is an open structure, and a plurality of bristles 15 are evenly fixedly mounted on the inner ring side of the annular bucket 14, and a plurality of nozzles 16 connected to the inside thereof are also evenly fixedly mounted on the inner ring side of the annular bucket 14. A connecting component is installed between the support ring 12 and the cover tube 8, and the connecting component includes a connecting component fixedly mounted on the support ring 12 and the cover tube 8. A connecting pipe 17 is provided between the top ends of the cover tube 8, the connecting pipe 17 passes through the top of the support ring 12 and is connected to the interior of the annular connecting bucket 14, a second one-way valve 18 that is connected to the interior of the annular connecting bucket 14 is fixedly installed on the connecting pipe 17, a rotating assembly that drives the annular connecting bucket 14 to rotate is installed on the connecting pipe 17, a water inlet hole is penetrated through the top end of the cover tube 8, a first one-way valve 10 that is connected to the interior of the cover tube 8 in a one-way manner is fixedly installed on the inner wall of the water inlet hole, a rubber ring 11 is fixedly installed on the top end of the limit ring 7, and the outer periphery of the rubber ring 11 is slidably installed with the inner wall of the cover tube 8.

[0021] After the detection is completed, the lifting rope 5 is reeled up by the reel-up roller 2, so that the lifting rope 5 pulls the detection head 6 to float up as a whole. After the rubber ring 25 installed at the top of the cover tube 8 abuts against the baffle 26 installed at the bottom of the cantilever plate 3, the cover tube 8 no longer moves up, but the lifting rope 5 will continue to pull the detection head 6 to move upward. When the detection head 6 moves upward, the water sucked into the cover tube 8 will be squeezed into the annular bucket 14 from the connecting pipe 17 through the rubber ring 11, and sprayed out through multiple nozzles 16 installed on the inner side of the annular bucket 14, so as to rinse the surface of the detection head 6 during the movement.

[0022] In this embodiment, the rotating assembly includes a guide cover 19 fixedly mounted on the outer surface of the connecting pipe 17, an impeller 20 is rotatably mounted inside the guide cover 19, and the rotation center of the impeller 20 is eccentrically arranged at the water inlet of the guide cover 19. An end face gear ring 22 is fixedly mounted on the outer periphery of the annular receiving bucket 14, and a driving gear 21 meshing with the end face gear ring 22 is fixedly mounted on the rotation center of the impeller 20 through a rotating shaft passing through the outer side of the guide cover 19.

[0023] When water flows in the connecting pipe 17, the impeller 20 is driven to rotate, and the impeller 20 drives the driving gear 21 to rotate, so that the driving gear 21 drives the annular bucket 14 to rotate through the end face gear ring 22 meshing therewith, so that the bristles 15 and the nozzle 16 installed on the inner side of the annular bucket 14 rotate around the detection head 6, so as to fully brush the surface of the detection head 6, so as to avoid that after the detection head 6 is salvaged, underwater impurities such as water plants dry up and adhere to the surface of the detection head 6, affecting the subsequent use of the ultrasonic sensor 34 and the optical sensor 35.

[0024] In this embodiment, the limiting mechanism includes a wedge block 29 inserted through the outer surface of the cover tube 8 near its top, a fixing ring 31 is fixedly installed on the outer surface of the wedge block 29 located outside the cover tube 8, a C-shaped plate 30 is fixedly installed on the outer surface of the cover tube 8 near the wedge block 29, a compression spring 32 is fixedly installed between the inner side of the C-shaped plate 30 and the fixing ring 31, an electromagnet 33 is fixedly installed on the inner side of the C-shaped plate 30, the wedge block 29 is made of ferromagnetic material, a plurality of support columns 24 are evenly fixedly installed on the top of the cover tube 8, a rubber ring 25 is fixedly installed on the top of the plurality of support columns 24, a baffle 26 is fixedly installed on the bottom end of the two cantilever plates 3, and the suspension rope 5 is set through the baffle 26.

[0025] In the initial position, the detection head 6 is retracted into the cover tube 8, which plays a protective role for the detection head 6; after the detection head 6 and the cover tube 8 are completely submerged in water, the power supply of the electromagnet 33 is turned on by the external controller (the electromagnet 33 is automatically powered off after being powered on for a certain period of time), so that the electromagnet 33 is powered on to generate magnetism, and the wedge block 29 is adsorbed, so that the wedge block 29 is pulled out from under the limit ring 7, the limit ring 7 is unlocked, and the thrust spring 9 installed in the cover tube 8 can be released and Push the detection head 6 out of the cover tube 8; when the limit ring 7 rises to the wedge block 29, due to the inclined structure of the wedge block 29, the limit ring 7 can squeeze the wedge block 29 outward through the inclined surface, thereby passing over the wedge block 29. After the limit ring 7 completely passes over the wedge block 29, the wedge block 29 will be reset by pushing the fixing ring 31 under the elastic force of the compression spring 32, and be stuck under the limit ring 7, thereby achieving the limiting effect of the limit ring 7 for use in the next operation.

[0026] In this embodiment, an annular cover 23 is fixedly installed on the outer surface of the cover tube 8 near its bottom, and the end face gear ring 22 and the driving gear 21 are both arranged inside the annular cover 23. The annular cover 23 protects the end face gear ring 22 and the driving gear 21 to prevent impurities in the water from getting stuck in the end face gear ring 22 and the driving gear 21.

[0027] From the above description, it can be seen that the above-mentioned embodiment of the present invention achieves the following technical effects: when in use, the winding roller 2 is driven to rotate by the stepper motor 27, so that the winding roller 2 performs the rope-releasing operation on the sling rope 5, and the detection head 6 installed at the other end of the sling rope 5 sinks into the water under the action of its own weight. In the initial position, the detection head 6 is retracted into the cover tube 8, which has the effect of protecting the detection head 6; after the detection head 6 and the cover tube 8 are completely sunk into the water, the power supply of the electromagnet 33 is turned on by the external controller (the electromagnet 33 is automatically powered off after being powered on for a certain period of time), so that the electromagnet 33 is powered on to generate a magnetic field The wedge block 29 is adsorbed to make the wedge block 29 be pulled out from the bottom of the limiting ring 7, and the limiting ring 7 is unlocked, so that the thrust spring 9 installed in the cover tube 8 can be released and push the detection head 6 out of the cover tube 8. When the cover tube 8 and the detection head 6 are away from each other, the rubber ring 11 fixedly installed on the limiting ring 7 will make a piston movement in the cover tube 8, and the external water can be drawn into the cover tube 8 through the first one-way valve 10, so that the water increases the weight of the detection head 6 and the cover tube 8 as a whole, and avoids the detection head 6 being too light, resulting in a large deviation of the detection head 6 with the fluctuation of water, which affects the detection effect of the area to be detected; After the detection is completed, the hanging rope 5 is wound up by the winding roller 2, so that the hanging rope 5 pulls the detection head 6 to float up as a whole. After the rubber ring 25 installed at the top of the cover tube 8 abuts against the baffle 26 installed at the bottom of the cantilever plate 3, the cover tube 8 will no longer move up, but the hanging rope 5 will continue to pull the detection head 6 to move upward. When the detection head 6 moves upward, the water sucked into the cover tube 8 will be squeezed into the annular bucket 14 from the connecting pipe 17 through the rubber ring 11, and sprayed out through the multiple nozzles 16 installed on the inner side of the annular bucket 14, so as to flush the surface of the detection head 6 during the movement. When the water in the connecting pipe 17 flows, the impeller 20 will be driven to rotate, so that the impeller 20 drives the driving gear 21 to rotate, and the driving gear 21 drives the annular bucket 14 to rotate through the end face gear ring 22 meshing therewith, so that the bristles 15 and the nozzle 16 installed on the inner side of the annular bucket 14 rotate around the detection head 6, so as to fully brush the surface of the detection head 6, and avoid that after the detection head 6 is salvaged, underwater impurities such as water plants dry up and adhere to the surface of the detection head 6, affecting the use effect of the subsequent ultrasonic sensor 34 and the optical sensor 35; When the limiting ring 7 rises to the wedge block 29, due to the inclined structure of the wedge block 29, the limiting ring 7 can squeeze the wedge block 29 outward through the inclined surface, thereby passing over the wedge block 29. After the limiting ring 7 completely passes over the wedge block 29, the wedge block 29 will be reset by pushing the fixing ring 31 under the elastic force of the compression spring 32, and be stuck under the limiting ring 7, thereby achieving the limiting effect on the limiting ring 7 for use in the next operation.

[0028] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A detection device for port and waterway engineering, comprising an equipment box (1), a winding roller (2) is rotatably installed inside the equipment box (1), a lifting rope (5) is wound around the outer surface of the winding roller (2), two cantilever plates (3) are symmetrically fixedly installed on the outer surface of one end of the equipment box (1), a guide wheel (4) is rotatably installed between the two cantilever plates (3), the lifting rope (5) is passed around the guide wheel (4), a detection head (6) is fixedly installed at one end of the lifting rope (5) away from the winding roller (2), the detection head (6) is a hollow structure, and an ultrasonic sensor (34) and an optical sensor (35) are fixedly installed inside the detection head (6), characterized in that: A limit ring (7) is fixedly mounted on the outer surface of the top end of the detection head (6); a cover tube (8) is sleeved on the outer surface of the detection head (6); the limit ring (7) is slidably mounted on the inner wall of the cover tube (8); a thrust spring (9) is fixedly mounted between the top wall of the cover tube (8) and the top end of the detection head (6); a cleaning mechanism for cleaning the surface of the detection head (6) is mounted at the bottom of the cover tube (8); and a limit mechanism is mounted on the outer surface of the cover tube (8) near the top thereof.

2. A detection device for port and waterway engineering according to claim 1, characterized in that: The cleaning mechanism comprises a support ring (12) fixedly mounted on the outer surface of the bottom of the cover tube (8); the bottom end of the support ring (12) is provided with an annular groove (13); an annular connecting bucket (14) is rotatably mounted on the inner wall of the annular groove (13); the top of the annular connecting bucket (14) is an open structure; a plurality of bristles (15) are evenly fixedly mounted on the inner ring side of the annular connecting bucket (14); and a plurality of nozzles (16) connected to the inside of the annular connecting bucket (14) are also evenly fixedly mounted on the inner ring side of the annular connecting bucket (14); and a connecting component is installed between the support ring (12) and the cover tube (8).

3. A detection device for port and waterway engineering according to claim 2, characterized in that: The connecting assembly comprises a connecting pipe (17) fixedly mounted between the support ring (12) and the top end of the cover tube (8); the connecting pipe (17) passes through the top end of the support ring (12) and is connected to the interior of the annular connecting bucket (14); a second one-way valve (18) is fixedly mounted on the connecting pipe (17) and is connected to the interior of the annular connecting bucket (14); and a rotating assembly is mounted on the connecting pipe (17) for driving the annular connecting bucket (14) to rotate.

4. A detection device for port and waterway engineering according to claim 3, characterized in that: The rotating assembly comprises a flow guide cover (19) fixedly mounted on the outer surface of the connecting pipe (17), an impeller (20) being rotatably mounted inside the flow guide cover (19), an end face gear ring (22) being fixedly mounted on the outer periphery of the annular receiving bucket (14), and a driving gear (21) meshing with the end face gear ring (22) being fixedly mounted at the rotation center of the impeller (20) via a rotating shaft penetrating the outer side of the flow guide cover (19).

5. The detection device for port and waterway engineering according to claim 1, characterized in that: A water inlet hole is formed through the top end of the cover cylinder (8), and a first one-way valve (10) is fixedly mounted on the inner wall of the water inlet hole for one-way conduction to the interior of the cover cylinder (8).

6. The detection device for port and waterway engineering according to claim 1, characterized in that: The limiting mechanism comprises a wedge-shaped block (29) inserted through the outer surface of the cover tube (8) near the top thereof, a fixing ring (31) being fixedly mounted on the outer surface of the wedge-shaped block (29) located outside the cover tube (8), a C-shaped plate (30) being fixedly mounted on the outer surface of the cover tube (8) near the wedge-shaped block (29), a compression spring (32) being fixedly mounted between the inner side of the C-shaped plate (30) and the fixing ring (31), an electromagnet (33) being fixedly mounted on the inner side of the C-shaped plate (30), and the wedge-shaped block (29) being made of a ferromagnetic material.

7. The detection device for port and waterway engineering according to claim 1, characterized in that: A rubber ring (11) is fixedly mounted on the top end of the limiting ring (7), and the outer periphery of the rubber ring (11) is slidably mounted on the inner wall of the cover tube (8).

8. The detection device for port and waterway engineering according to claim 4 is characterized in that: An annular cover (23) is fixedly mounted on the outer surface of the cover cylinder (8) close to the bottom thereof, and the end face gear ring (22) and the driving gear (21) are both arranged inside the annular cover (23).

9. The detection device for port and waterway engineering according to claim 1, characterized in that: A plurality of support columns (24) are evenly and fixedly mounted on the top of the cover cylinder (8), a rubber ring (25) is fixedly mounted on the top of the plurality of support columns (24), a baffle (26) is fixedly mounted on the bottom ends of the two cantilever plates (3), and the suspension rope (5) is arranged to pass through the baffle (26).

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