An underwater concrete defect detection dry chamber cabin

Abstract

The utility model discloses a kind of for underwater concrete defect detection dry chamber cabin, including cabin, the outer wall of cabin is equipped with lifting ring, cable pipe mouth and exhaust pipe mouth are also provided to cabin outside of lifting ring, the lower side of cabin is provided with pumping outlet, the bottom outside of cabin is provided with sealing structure;The top of inside cabin is fixed with baffle, driving motor is installed in the middle of baffle upper side, the lower side of baffle is installed support seat, cleaning device is rotatably installed on support seat, the output shaft of driving motor is connected with cleaning device transmission. Inside cabin is also installed with camera. By installing driving motor and cleaning device in cabin, driving motor drives cleaning device to rotate, thereby removing adherend on the surface of underwater concrete, after adherend removal, underwater concrete defect is observed and photographed by camera again, so that personnel does not need to enter underwater in the inspection stage.

Description

Technical Field

[0001] This utility model relates to the field of underwater concrete inspection technology, and in particular to a dry chamber for underwater concrete defect detection. Background Technology

[0002] Underwater concrete defect treatment in hydraulic structures typically employs methods such as partial drainage repair of caissons, dry-land repair, underwater repair by divers, and underwater repair by ROV robots. Before inspection and repair, underwater robots equipped with cameras are usually needed to inspect and photograph the underwater concrete defect area to determine the extent and size of the defect in order to formulate an appropriate repair plan. However, underwater concrete surfaces often contain deposits, including mineral deposits and algae. If these deposits obscure concrete defects, their size and severity cannot be accurately observed, thus affecting the formulation of repair plans and causing repair schedules to exceed expectations. To facilitate the observation and photographing of concrete defects with deposits, we propose a dry chamber for underwater concrete defect detection, as described in this application.

[0003] A search revealed Chinese patent document CN220057811U, published on November 21, 2023, which discloses a double-walled dry chamber repair equipment for underwater concrete maintenance. The equipment includes an outer chamber and an inner chamber, both connected to a submersible via a submersible connection section. The outer chamber has a skirt at its bottom, fitted with D-type and outer VA-type water-stop rubber. A pump chamber is located above the skirt, housing a water pump connected to a drain pipe and a suction pipe. The inner chamber covers the underwater concrete area to be repaired, and its bottom outer edge is fitted with an inner VA-type water-stop rubber. This equipment utilizes the water pressure from the external water body, resulting in better rubber water-stopping and increased overall stability. Furthermore, it utilizes gas to drain water from the inner chamber, creating a better dry working environment. This ingeniously overcomes the water-stopping and sealing challenges at great depths, addressing the maintenance needs in such conditions. However, when using this equipment to inspect underwater concrete defects, personnel need to enter the dry chamber to clean any adhering substances on the surface of the underwater concrete. Utility Model Content

[0004] The technical problem to be solved by this utility model is to address the problems existing in the background art and provide a dry chamber for underwater concrete defect detection. By installing a drive motor and a cleaning device inside the chamber, the drive motor drives the cleaning device to rotate, thereby removing the adhering substances on the surface of the underwater concrete. After the adhering substances are removed, the underwater concrete defects are observed and photographed by a camera, so that personnel do not need to enter the water during the inspection stage.

[0005] The purpose of this utility model is achieved as follows: A dry chamber for underwater concrete defect detection includes a chamber body. A lifting ring is installed on the outer wall of the chamber body. A cable conduit and an exhaust pipe are also provided outside the lifting ring. A water pumping pipe is provided on the lower side of the chamber body. A sealing structure is provided on the outer bottom of the chamber body. A partition is fixedly installed on the top of the chamber body. A drive motor is installed in the middle of the upper part of the partition. A support base is installed on the lower side of the partition. A cleaning device is rotatably mounted on the support base. The output shaft of the drive motor is connected to the cleaning device for transmission, thereby driving the cleaning device to rotate. The cleaning device includes a rotating rod and a brush body. The rotating rod is rotatably mounted on the support base. The upper end of the rotating rod is connected to the output shaft of the drive motor for transmission. The brush body is installed at the lower end of the rotating rod. A camera is also installed inside the chamber body.

[0006] The drive motor is either a hydraulic motor or a pneumatic motor.

[0007] A flexible cable tube is connected to the cable conduit opening.

[0008] A first hydraulic hose is connected to the exhaust pipe, and a first valve is installed at the end of the first hydraulic hose; a bypass port is also provided on the exhaust pipe, and an automatic valve is installed on the bypass port. The automatic valve is a hydraulically driven valve or a pneumatically driven valve.

[0009] A water pumping hose is connected to the water pumping port, and the end of the water pumping hose is used to connect to the water inlet of the water pump.

[0010] The sealing structure includes an extension ring, which is fixed to the lower outer wall of the cabin. A first sealing ring groove and a second sealing ring groove are provided on the lower side of the extension ring. The first sealing ring groove is located inside the second sealing ring groove. A water-stop ring is installed in the first sealing ring groove, and a support sealing ring is installed in the second sealing ring groove.

[0011] The water-stop ring adopts a VA type water seal ring. The supporting seal ring includes a ring body and an arc ring. The ring body is installed in the second sealing ring groove, and the arc ring is fixed to the bottom of the ring body. There is an air cavity between the ring body and the arc ring.

[0012] The support base includes a support rod and a support plate. The support plate is fixed to the lower side of the partition by multiple support rods. A fixing sleeve is installed in the middle of the support plate. The fixing sleeve passes through the support plate. The upper end of the rotating rod is rotatably connected to the fixing sleeve.

[0013] A rotating sleeve is slidably fitted on the outside of the upper end of the rotating rod. The rotating sleeve is rotatably installed in the fixed sleeve through a bearing. The upper end of the rotating sleeve is connected to the output shaft of the drive motor for transmission. A limit pin is installed through the rotating sleeve on the lower side of the fixed sleeve. A longitudinal elongated hole is provided on the rotating rod, through which the limit pin passes. A spring is installed inside the rotating sleeve at the top of the rotating rod.

[0014] The brush body includes a brush support base, the upper middle part of which is fixed to the lower end of the rotating rod, and a wire brush is installed on the upper side of the brush support base by bolts.

[0015] The features of this utility model using the above-mentioned technical solution are: 1. The cable conduit of this utility model is used for internal cables and pipelines to pass through, the exhaust pipe is used to expel air from the cabin when the cabin sinks, so that the cabin can sink, the water pumping pipe is used to pump out water from the cabin, the sealing structure is used to seal the cabin and the concrete, the partition is used to install the drive motor and the cleaning device is rotatably installed through the support base, the drive motor is used to drive the cleaning device to rotate, the cleaning device is used to rotate and clean the attachments on the concrete surface through the brush body, and after the attachments on the concrete surface are cleaned, the underwater concrete defects are observed and photographed by the camera, so that personnel do not need to enter the water during the inspection stage.

[0016] 2. The rotating sleeve of this utility model has a spring installed at the top of the rotating rod, which enables the rotating rod to rotate and elastically extend and retract up and down, so that the wire brush is always elastically supported on the concrete surface. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0018] Figure 1 This is a schematic diagram of the structure of this utility model.

[0019] Figure 2 This is a schematic diagram of the structure of the support base on which the cleaning device is installed.

[0020] Figure 3 This is a schematic diagram of the structure of the rotating sleeve installed inside the support base of this utility model.

[0021] Figure 4 This is a schematic diagram of the cleaning device of this utility model.

[0022] Figure 5 This is a side view of the cleaning device of this utility model.

[0023] Figure label: 10. Cabin; 11. Lifting ring; 12. Cable conduit; 121. Cable hose; 13. Water intake port; 131. Water intake hose; 14. Bulkhead; 141. Mounting hole; 15. Exhaust port; 151. First hydraulic hose; 16. First valve. Sealing structure 20, extension ring 21, first sealing ring groove 22, second sealing ring groove 23, water-stop ring 24, support sealing ring 25, ring body 251, arc ring 252, air cavity 253; Cleaning device 30, rotating rod 31, elongated hole 311, brush support 32, wire brush 33, rib plate 34, rotating sleeve 35, retaining ring 351, round nut 352, spring 36, limit pin 37. Drive motor 40, key 41; Automatic valve 50, Support base 60, support rod 61, support plate 62, fixing sleeve 63, bearing 64 Camera 70. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] It should be noted that the use of terms such as "an embodiment," "an embodiment," "an exemplary embodiment," and "some embodiments" in the specification indicates that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the art.

[0026] Example 1: See Figure 1-5 A dry chamber for underwater concrete defect detection includes a chamber body 10. A lifting ring 11 is installed on the outer wall of the chamber body 10. A cable conduit 12 and an exhaust pipe 15 are also provided outside the lifting ring 11 on the chamber body 10. A water pumping pipe 13 is provided on the lower side of the chamber body 10. A sealing structure 20 is provided on the outer bottom of the chamber body 10. A partition 14 is fixedly installed at the top inside the chamber body 10. A drive motor 40 is installed in the middle of the upper side of the partition 14. A support base 60 is installed on the lower side of the partition 14. A cleaning device 30 is rotatably mounted on the support base 60. The output shaft of the drive motor 40 is connected to the cleaning device 30 for transmission, driving the cleaning device 30 to rotate. The cleaning device 30 includes a rotating rod 31 and a brush body. The rotating rod 31 is rotatably mounted on the support base 60. The upper end of the rotating rod 31 is connected to the output shaft of the drive motor 40 for transmission, and the lower end of the rotating rod 31 is equipped with a brush body. A camera 70 is also installed inside the chamber body 10.

[0027] The hull 10 is a hemispherical shell structure. Lifting rings 11 are installed at required positions on the outer wall of the hull 10 according to the underwater environment. There can be one or multiple lifting rings 11. Cable conduits 12 are used for internal cables and pipes to pass through. Exhaust pipes 15 are used to expel air from the hull 10 when it sinks, allowing it to descend. Water extraction pipes 13 are used to extract water from the hull 10. A sealing structure 20 is used to seal the hull 10 against the concrete. A partition 14 is used to install a drive motor 40 and a cleaning device 30, which is rotatably mounted via a support 60. The drive motor 40 drives the cleaning device 30 to rotate. The cleaning device 30 uses a brush to rotate and clean the deposits on the concrete surface. After cleaning, a camera 70 observes and photographs underwater concrete defects, thus eliminating the need for personnel to enter the water during the inspection phase.

[0028] See Figure 1 The bulkhead 14 is provided with four mounting holes 141, which provide mounting channels for the drive motor 40. The camera 70 is an underwater camera with a light. The camera 70 can be installed on the inner wall of the hull 10 above the bulkhead 14 or on the lower side of the bulkhead 14.

[0029] In this embodiment, the drive motor 40 is a hydraulic motor or a pneumatic motor. The hose that drives the hydraulic motor or pneumatic motor exits from the cable conduit 12. The hose is either a hydraulic hose or a pneumatic hose. After the cables of the drive motor 40 and the camera 70 exit the cable conduit 12, sealant is filled inside the cable conduit 12 to seal it.

[0030] See Figure 1 A flexible cable 121 is connected to the cable conduit 12. The cables of the drive motor 40 and the camera 70 pass through the cable conduit 12 and then into the flexible cable 121, which protects the conduit and cables. In use, the flexible cable 121 extends to the work vessel on the water surface.

[0031] See Figure 1 A first hydraulic hose 151 is connected to the exhaust pipe 15, and a first valve 16 is installed at the end of the first hydraulic hose 151. In use, the first valve 16 is located on the workboat on the water surface. When the hull 10 sinks, the first valve 16 is opened to expel the air in the hull 10, which facilitates the sinking of the hull 10. When water is pumped out through the water pumping pipe 13, the first valve 16 is also opened. When the hull 10 is drawn into negative pressure through the water pumping pipe 13, the first valve 16 is closed.

[0032] See Figure 1The exhaust pipe 15 is also equipped with a bypass port, on which an automatic valve 50 is installed. The automatic valve 50 is either hydraulically or pneumatically driven. By controlling the opening of the automatic valve 50, water from outside the hull 10 can enter the hull 10. The hydraulically or pneumatically driven valve is a readily available product. The power line for the automatic valve 50 extends to the workboat on the water surface, and the operation of the automatic valve 50 is controlled by a hydraulic or pneumatic system.

[0033] See Figure 1 A water inlet 13 is connected to a water inlet hose 131, the end of which is connected to the inlet of a water pump. In use, the water pump is installed on a workboat on the water surface. The water inlet 13 is connected to the inlet of the water pump via the water inlet hose 131. The water inlet hose 131 is a hydraulic wire hose. The water pump draws water from the hull 10. To ensure airtightness after water is drawn from the hull 10, a valve is installed at the end of the water inlet hose 131 located on the workboat before connecting it to the inlet of the water pump. When the water pump starts, the valve on the water inlet hose 131 opens; when the water pump stops, the valve on the water inlet hose 131 closes. In this embodiment, a high-suction self-priming pump is used, such as a vacuum-assisted high-suction self-priming sewage pump from Jiangsu Boyu Pump Industry Co., Ltd.

[0034] See Figure 1 The sealing structure 20 includes an extension ring 21, which is fixed to the lower outer wall of the cabin 10. A first sealing ring groove 22 and a second sealing ring groove 23 are provided on the lower side of the extension ring 21. The first sealing ring groove 22 is located inside the second sealing ring groove 23. A water-stop ring 24 is installed in the first sealing ring groove 22, and a support sealing ring 25 is installed in the second sealing ring groove 23.

[0035] Specifically, the water-stop ring 24 adopts a VA-type water seal ring, and the supporting seal ring 25 includes a ring body 251 and an arc-shaped ring 252. The ring body 251 is installed in the second sealing ring groove 23, and the arc-shaped ring 252 is fixed to the bottom of the ring body 251. An air cavity 253 is provided between the ring body 251 and the arc-shaped ring 252. The supporting seal ring 25 provides elastic support and forms a primary seal through the lower arc-shaped ring 252, while also adapting to the unevenness of the concrete surface. The water-stop ring 24 adopts a VA-type water seal ring. When negative pressure is generated inside the chamber 10, the water-stop ring 24 adheres to the concrete surface to achieve a seal. Both the water-stop ring 24 and the supporting seal ring 25 are made of rubber.

[0036] In this embodiment, the support base 60 includes a support rod 61 and a support plate 62. The support plate 62 is fixed to the lower side of the partition 14 by a plurality of support rods 61. A fixing sleeve 63 is installed in the middle of the support plate 62. The fixing sleeve 63 passes through the support plate 62. The upper end of the rotating rod 31 is rotatably connected to the fixing sleeve 63.

[0037] Specifically, the output shaft of the drive motor 40 is connected to the upper end of the rotating rod 31 for transmission, combined with... Figure 2 As shown, a mounting hole can be provided at the top of the rotating rod 31. The output shaft of the drive motor 40 is inserted into the mounting hole at the top of the rotating rod 31 with an interference fit. A flat key 41 is installed between the output shaft and the mounting hole. In this way, the rotating rod 31 can be directly driven to rotate by the drive motor 40, thereby driving the brush body to rotate.

[0038] In this embodiment, see Figure 4 , 5 The brush body includes a brush support base 32, the upper middle part of which is fixed to the lower end of the rotating rod 31. A wire brush 33 is bolted to the upper side of the brush support base 32. The wire brush 33 can be a wooden wire brush or a nylon wire brush.

[0039] To improve the structural stability of the brush support 32, ribs 34 are welded to both sides of the rotating rod 31.

[0040] Example 2: Based on Example 1, see Figure 2 , 3 A rotating sleeve 35 is slidably fitted onto the upper end of the rotating rod 31. The rotating sleeve 35 is rotatably mounted inside the fixed sleeve 63 via a bearing 64. The upper end of the rotating sleeve 35 is connected to the output shaft of the drive motor 40 for transmission. A limiting pin 37 is installed through the rotating sleeve 35 on the lower side of the fixed sleeve 63. A longitudinal elongated hole 311 is provided on the rotating rod 31, through which the limiting pin 37 passes. A spring 36 is installed inside the rotating sleeve 35 at the top of the rotating rod 31. With the above structure, the rotating rod 31 can both rotate and elastically extend and retract vertically, thus ensuring that the wire brush 33 is always elastically supported on the concrete surface.

[0041] See Figure 3 A retaining ring 351 is installed on the top of the inner ring of the bearing 64 on the upper side of the rotating sleeve 35. A round nut 352 is threadedly screwed onto the upper side of the retaining ring 351 on the rotating sleeve 35. A mounting hole is provided at the center of the top of the rotating sleeve 35 for mounting the output shaft of the drive motor 40. The output shaft of the drive motor 40 is interference-fitted into the mounting hole on the top of the rotating sleeve 35. A flat key 41 is installed between the output shaft and the mounting hole, allowing the drive motor 40 to drive the rotating sleeve 35 to rotate. Since a limit pin 37 is installed between the rotating sleeve 35 and the rotating rod 31, the rotating rod 31 can be driven to rotate, thereby driving the brush body to rotate. The rotating rod 31 has a longitudinal elongated hole 311, allowing it to move upwards or downwards.

[0042] The working principle or process of this utility model: See Figure 1 In use, the hull 10 is connected to the wire rope of the lifting equipment on the workboat via the lifting ring 11. A flexible cable hose 121 is connected to the cable conduit 12 of the hull 10. The power lines of the drive motor 40 and the camera 70 pass through the cable conduit 12 and then into the flexible cable hose 121, extending together with the flexible cable hose 121 to the workboat on the water surface. The camera 70's cable is connected to a monitor on the workboat. The lines of the drive motor 40 and the automatic valve 50 are connected to the hydraulic control system. A first hydraulic hose 151 is connected to the exhaust pipe 15, and a first valve 16 is installed at the end of the first hydraulic hose 151. The first valve 16 is located on the workboat on the water surface.

[0043] The cabin 10 is placed into the water using the lifting equipment on the work vessel. As the cabin 10 sinks, the first valve 16 is opened to expel the air from the cabin 10, facilitating its rapid descent. After the cabin 10 lands on the concrete surface, the water pump on the work vessel is activated to extract water from the cabin 10. During the pumping process, the first valve 16 is also opened, but the flow rate of the first valve 16 is slightly less than the flow rate of the water pump, creating negative pressure in the cabin 10 and improving the sealing performance of the sealing structure 20.

[0044] The camera 70 observes the situation inside the chamber 10. After the water inside the chamber 10 is pumped out, the first valve 16 is closed, and the water pump is started in real time according to the water level inside the chamber 10. If there are any deposits on the concrete surface, the drive motor 40 is started to drive the wire brush 33 to rotate and brush the deposits on the concrete surface. After brushing for a period of time, the automatic valve 50 is opened to allow water from outside the chamber 10 to enter the chamber 10, submerging the wire brush 33 and rinsing the concrete surface. Then the water pump is started again to pump water, repeating this process once or multiple times until the defects in the concrete inside the chamber 10 can be observed through the camera 70. Finally, the camera 70 is used to observe and photograph the defects in the underwater concrete.

[0045] After observing and photographing the defects in the underwater concrete, the automatic valve 50 is opened to allow water from outside the chamber 10 to enter the chamber 10, and the first valve 16 is opened, after which the chamber 10 can be extracted.

[0046] While specific embodiments of the present invention have been described above, those skilled in the art should understand that the specific embodiments described are merely illustrative and not intended to limit the scope of the present invention. Any modifications and variations made by those skilled in the art in accordance with the spirit of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A dry chamber for underwater concrete defect detection, comprising a chamber body (10), characterized in that: A lifting ring (11) is installed on the outer wall of the cabin (10). A cable conduit (12) and an exhaust pipe (15) are also provided on the outside of the lifting ring (11) of the cabin (10). A water pumping pipe (13) is provided on the lower side of the cabin (10). A sealing structure (20) is provided on the outer side of the bottom of the cabin (10). A partition (14) is installed and fixed on the top of the cabin (10). A drive motor (40) is installed on the middle of the upper side of the partition (14). A support seat (60) is installed on the lower side of the partition (14). The cleaning device (30) is rotatably mounted on the support base (60), and the output shaft of the drive motor (40) is connected to the cleaning device (30) for transmission, so as to drive the cleaning device (30) to rotate; the cleaning device (30) includes a rotating rod (31) and a brush body. The rotating rod (31) is rotatably mounted on the support base (60), and the upper end of the rotating rod (31) is connected to the output shaft of the drive motor (40) for transmission. The lower end of the rotating rod (31) is equipped with the brush body; a camera (70) is also installed inside the cabin (10).

2. The dry chamber for underwater concrete defect detection according to claim 1, characterized in that: The drive motor (40) is a hydraulic motor or a pneumatic motor.

3. A dry chamber for underwater concrete defect detection according to claim 1, characterized in that: A flexible cable (121) is connected to the cable conduit (12).

4. A dry chamber for underwater concrete defect detection according to claim 1, characterized in that: The exhaust port (15) is connected to a first hydraulic hose (151), and a first valve (16) is installed at the end of the first hydraulic hose (151); the exhaust port (15) is also provided with a bypass port, and an automatic valve (50) is installed on the bypass port. The automatic valve (50) is a hydraulically driven valve or a pneumatically driven valve.

5. A dry chamber for underwater concrete defect detection according to claim 1, characterized in that: A water pumping hose (131) is connected to the water pumping port (13), and the end of the water pumping hose (131) is used to connect to the water inlet of the water pump.

6. A dry chamber for underwater concrete defect detection according to claim 1, characterized in that: The sealing structure (20) includes an extension ring (21), which is fixed to the lower outer wall of the cabin (10). A first sealing ring groove (22) and a second sealing ring groove (23) are provided on the lower side of the extension ring (21). The first sealing ring groove (22) is located inside the second sealing ring groove (23). A water-stop ring (24) is installed in the first sealing ring groove (22), and a support sealing ring (25) is installed in the second sealing ring groove (23).

7. A dry chamber for underwater concrete defect detection according to claim 6, characterized in that: The water-stop ring (24) adopts a VA type water seal ring. The supporting seal ring (25) includes a ring body (251) and an arc ring (252). The ring body (251) is installed in the second sealing ring groove (23). The arc ring (252) is fixed to the bottom of the ring body (251). There is an air cavity (253) between the ring body (251) and the arc ring (252).

8. A dry chamber for underwater concrete defect detection according to claim 1, characterized in that: The support base (60) includes a support rod (61) and a support plate (62). The support plate (62) is fixed to the lower side of the partition (14) by multiple support rods (61). A fixing sleeve (63) is installed in the middle of the support plate (62). The fixing sleeve (63) passes through the support plate (62). The upper end of the rotating rod (31) is rotatably connected to the fixing sleeve (63).

9. A dry chamber for underwater concrete defect detection according to claim 8, characterized in that: A rotating sleeve (35) is slidably fitted on the outside of the upper end of the rotating rod (31). The rotating sleeve (35) is rotatably installed in the fixed sleeve (63) through the bearing (64). The upper end of the rotating sleeve (35) is connected to the output shaft of the drive motor (40) for transmission. A limiting pin (37) is installed through the rotating sleeve (35) on the lower side of the fixed sleeve (63). A longitudinal long hole (311) is provided on the rotating rod (31). The limiting pin (37) passes through the long hole (311). A spring (36) is installed inside the rotating sleeve (35) on the top of the rotating rod (31).

10. A dry chamber for underwater concrete defect detection according to claim 1, characterized in that: The brush body includes a brush support base (32), the upper middle part of which is fixed to the lower end of the rotating rod (31), and a wire brush (33) is installed on the upper side of the brush support base (32) by bolts.

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